CN105529942B - A kind of PFC rectifiers, uninterruptible power supply, control method and device - Google Patents

A kind of PFC rectifiers, uninterruptible power supply, control method and device Download PDF

Info

Publication number
CN105529942B
CN105529942B CN201410515253.2A CN201410515253A CN105529942B CN 105529942 B CN105529942 B CN 105529942B CN 201410515253 A CN201410515253 A CN 201410515253A CN 105529942 B CN105529942 B CN 105529942B
Authority
CN
China
Prior art keywords
pfc
tube
capacitance
diode
rectifiers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410515253.2A
Other languages
Chinese (zh)
Other versions
CN105529942A (en
Inventor
刘中伟
倪同
沈宝山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vertiv Corp
Original Assignee
Liebert Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liebert Corp filed Critical Liebert Corp
Priority to CN201410515253.2A priority Critical patent/CN105529942B/en
Publication of CN105529942A publication Critical patent/CN105529942A/en
Application granted granted Critical
Publication of CN105529942B publication Critical patent/CN105529942B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

An embodiment of the present invention provides a kind of PFC rectifiers, uninterruptible power supply, control method and devices, it is operated under battery mode to solve existing PFC rectification circuits, in the bus capacitor energy storage that the continued flow tube being connected for an electrode with DC power supply is connect, high frequency saltus step between the current potential of busbar output terminal that the current potential of the DC power supply electrode is connected in the current potential of the zero curve of AC power and the continued flow tube, the problem of so as to form electromagnetic interference.A kind of PFC rectifiers provided in an embodiment of the present invention, including PFC rectification circuits;The first rectifying tube in the PFC rectification circuits is the switching tube of inverse parallel body diode or is the parallel-connection structure switched with diode;Wherein, first rectifying tube is the rectifying tube being connected in two rectifying tubes when PFC rectification circuits are operated under battery mode in the PFC rectification circuits with DC power supply;When wherein, under battery mode, the DC power supply is the PFC rectifier power supplies.

Description

A kind of PFC rectifiers, uninterruptible power supply, control method and device
Technical field
The present invention relates to power electronics field more particularly to a kind of PFC rectifiers, uninterruptible power supply, control methods And device.
Background technology
In uninterruptible power supply (UPS, Uninterruptible Power Supply) PFC (PFC, Power Factor Correction) rectification circuit more than 5KVA power section, with the raising of direct current power source voltage, As far as possible by AC/DC converters and DC/DC converter common sparing devices in design, to achieve the purpose that reduce cost.It is single The preposition scheme of inductance, i.e., cost can be reduced as far as possible by increasing the scheme of PFC inductance in the input terminal of DC/DC converters, but Using in most of uninterruptible power supply topologys of the preposition scheme of single inductance, all there are problems that electromagnetic interference.
In the Single Phase PFC Rectifier using single battery group shown in Fig. 1 a, under battery mode, switch K1 connects battery pack The anode of DC, switch K2 is closed, and in positive pole line capacitance C1 energy storage, switching tube Q2 conductings, switching tube Q1 high frequency choppings are switching When pipe Q1 is connected, electric current is arrived by the anode of battery pack DC, switch K1, inductance L1, diode D1, switching tube Q1, switching tube Q2 Up to the cathode of battery pack DC, so as to form tank circuit, inductance L1, i.e. PFC induction chargings are given;When switching tube Q1 is turned off, electricity Pond group DC and inductance L1 charges jointly to positive pole line capacitance C1, and electric current is by inductance L1, diode D1, diode D3, positive bus-bar Capacitance C1, switching tube Q2, switch K2 reach the cathode of battery pack DC.Due to switching tube Q2 normal opens, the cathode of battery pack DC Clamp the current potential in the zero curve N of AC power AC.
Circuit shown in Fig. 1 a, under battery mode, switch K1 connects the anode of battery pack DC, and switch K2 is closed, in negative mother During line capacitance C2 energy storage, switching tube Q1 normal opens, switching tube Q2 high frequency choppings, when switching tube Q2 is connected, electric current passes through battery pack Anode, switch K1, inductance L1, diode D1, switching tube Q1, the switching tube Q2 of DC reach the cathode of battery pack DC, so as to form Tank circuit gives inductance L1, i.e. PFC induction chargings;At this time since switching tube Q2 is connected, the cathode of battery pack DC is by pincers Position is in the current potential of the zero curve N of AC power AC;When switching tube Q2 is turned off, battery pack DC and inductance L1 gives negative busbar capacitance jointly C2 charges, and electric current reaches battery by inductance L1, diode D1, switching tube Q1, negative busbar capacitance C2, diode D4, switch K2 The cathode of group DC;At this time since diode D4 is connected, the cathode of battery pack DC is clamped at the current potential of negative busbar BUS-.
That is, the Single Phase PFC Rectifier using single battery group shown in Fig. 1 a is at work, battery pack can be caused The high frequency saltus step between the current potential of the zero curve N of AC power AC and the current potential of negative busbar BUS- of the current potential of the cathode of DC, thus It is formed on capacitance C3 (direct-to-ground capacitance of the cathode of battery pack DC) and capacitance C4 (direct-to-ground capacitance of the anode of battery pack DC) very strong High frequency common mode current, that is, form electromagnetic interference.
In the Single Phase PFC Rectifier using single battery group shown in Fig. 1 b, under battery mode, switch K1 connects battery pack The cathode of DC, switch K2 are closed, and in positive pole line capacitance C1 energy storage, switching tube Q2 normal opens, switching tube Q1 high frequency choppings are switching When pipe Q1 is connected, electric current is arrived by the anode of battery pack DC, switch K2, switching tube Q1, switching tube Q2, diode D2, inductance L1 Up to the cathode of battery pack DC, so as to form tank circuit, inductance L1, i.e. PFC induction chargings are given;At this point, since switching tube Q1 is led Logical, therefore, the anode of battery pack DC is clamped at the current potential of the zero curve N of AC power AC;When switching tube Q1 is turned off, battery pack DC and inductance L1 charges jointly to positive pole line capacitance C1, and electric current is by the anode of battery pack DC, switch K2, diode D3, positive pole Line capacitance C1, switching tube Q2, diode D2, inductance L1 reach the cathode of battery pack DC;At this point, since diode D3 is connected, because This, the anode of battery pack DC is clamped at the current potential of positive bus-bar BUS+.
Circuit shown in Fig. 1 b, under battery mode, switch K1 connects the cathode of battery pack DC, and switch K2 is closed, in negative mother During line capacitance C2 energy storage, switching tube Q1 normal opens, switching tube Q2 high frequency choppings, when switching tube Q2 is connected, electric current passes through battery pack Anode, switch K2, switching tube Q1, switching tube Q2, diode D2, the inductance L1 of DC reach the cathode of battery pack DC, so as to form Tank circuit gives inductance L1, i.e. PFC induction chargings;When switching tube Q2 is turned off, battery pack DC and inductance L1 gives negative busbar jointly Capacitance C2 charges, and electric current is reached by switch K2, switching tube Q1, negative busbar capacitance C2, diode D4, diode D2, inductance L1 The cathode of battery pack DC;At this time due to switching tube Q1 normal opens, the anode of battery pack DC is clamped at the zero of AC power AC The current potential of line N.
That is, the Single Phase PFC Rectifier using single battery group shown in Fig. 1 b is at work, battery pack can be caused The high frequency saltus step between the current potential of the zero curve N of AC power AC and the current potential of positive bus-bar BUS+ of the current potential of the anode of DC, thus It is formed on capacitance C3 (direct-to-ground capacitance of the cathode of battery pack DC) and capacitance C4 (direct-to-ground capacitance of the anode of battery pack DC) very strong High frequency common mode current, that is, form electromagnetic interference.
In conclusion existing be operated in using the PFC rectification circuits of single battery group under battery mode, for direct current The bus capacitor energy storage that the continued flow tube that one electrode in source is connected is connected is (i.e. in negative busbar capacitance C2 or Fig. 1 b in Fig. 1 a Positive pole line capacitance C1) when, the current potential of the electrode of DC power supply the zero curve of AC power current potential and with DC power supply should High frequency saltus step between the current potential for the busbar that the continued flow tube that electrode is connected is connected, this can be in the direct-to-ground capacitance of the anode of DC power supply With the common mode current that very strong high frequency is formed on the direct-to-ground capacitance of the cathode of DC power supply, so as to form electromagnetic interference.
Invention content
An embodiment of the present invention provides a kind of PFC rectifiers, uninterruptible power supply, control method and devices, existing to solve Some PFC rectification circuits are operated under battery mode, are connect in the continued flow tube being connected for an electrode with DC power supply During bus capacitor energy storage, the current potential of the electrode of DC power supply is in the current potential of the zero curve of AC power and the electricity with DC power supply High frequency saltus step between the current potential of busbar that extremely connected continued flow tube is connected, this can the anode of DC power supply direct-to-ground capacitance and The common mode current of very strong high frequency is formed on the direct-to-ground capacitance of the cathode of DC power supply, the problem of so as to form electromagnetic interference.
Based on the above problem, a kind of PFC rectifiers provided in an embodiment of the present invention, including PFC rectification circuits;
The first rectifying tube in the PFC rectification circuits is the switching tube of inverse parallel body diode or is switch and two The parallel-connection structure of pole pipe;
Wherein, first rectifying tube is when PFC rectification circuits are operated under battery mode in the PFC rectification circuits The rectifying tube being connected in two rectifying tubes with DC power supply;When wherein, under battery mode, the DC power supply is the PFC Rectifier power supply.
Further, the first continued flow tube in the PFC rectification circuits is diode or is inverse parallel body diode Switching tube;
Wherein, the first continued flow tube in the PFC rectification circuits be in two continued flow tubes in the PFC rectification circuits with The continued flow tube that first rectifying tube is connected directly.
Further, when the first continued flow tube in the PFC rectification circuits is diode, the PFC rectifiers also wrap The first capacitance is included, first capacitance is in parallel with first continued flow tube.
Further, when the first continued flow tube in the PFC rectification circuits is diode, the PFC rectifiers also wrap First switch is included, the first switch is in parallel with first continued flow tube;
The first switch, for being the first bus capacitor energy storage under being operated in battery mode in the PFC rectifiers It is closed during PFC inductance storage energy in the process;First bus capacitor is the positive pole line capacitance of the PFC rectification circuits and bears The bus capacitor being connected directly in bus capacitor with first continued flow tube;And for any feelings in following two situations It is disconnected under condition:It is the second busbar that the PFC rectifiers, which are operated in utility mode, the PFC rectifiers are operated under battery mode Capacitive energy storage;Second bus capacitor is in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance described the Bus capacitor other than one bus capacitor.
Further, the second rectifying tube in the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention is anti- The switching tube of body diode in parallel or the parallel-connection structure for switch and diode;Wherein, second rectifying tube is described Rectifying tube in two rectifying tubes in PFC rectification circuits in addition to first rectifying tube.
Optionally, the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention for Single Phase PFC Rectifier or Person is multiphase PFC rectification circuits.
A kind of uninterruptible power supply provided in an embodiment of the present invention, including PFC rectifiers provided in an embodiment of the present invention.
Control method provided in an embodiment of the present invention, for controlling PFC rectifiers provided in an embodiment of the present invention, including:
The first bus capacitor energy storage in the PFC rectifiers are powered by DC power supply and are the PFC rectifiers When, control the first main switch shutdown, and the conducting of the second main switch and control the first rectifying tube high frequency is controlled to cut Wave;
Wherein, first main switch be the PFC rectification circuits two main switches in first rectification The main switch that pipe is connected directly, second main switch be the PFC rectification circuits two main switches in except described Main switch other than first main switch;First bus capacitor is the positive pole line capacitance of the PFC rectification circuits and bears The bus capacitor being connected directly in bus capacitor with the first continued flow tube;First continued flow tube is in the PFC rectification circuits The continued flow tube being connected directly in two continued flow tubes with first rectifying tube.
Further, control method provided in an embodiment of the present invention further includes:
The second bus capacitor energy storage in the PFC rectifiers are powered by DC power supply and are the PFC rectifiers When, the first main switch conducting is controlled, controls the second main switch high frequency chopping, controls first rectifying tube high Frequency copped wave, and second main switch and the first rectifying tube alternating chopper;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
Further, control method provided in an embodiment of the present invention further includes:
The second bus capacitor energy storage in the PFC rectifiers are powered by AC power and are the PFC rectifiers When, the second main switch high frequency chopping is controlled, controls the first rectifying tube high frequency chopping, and second main switch With the first rectifying tube alternating chopper;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
Further, when the second rectifying tube in the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention is The switching tube of inverse parallel body diode or the parallel-connection structure for switch and diode, controlling party provided in an embodiment of the present invention Method further includes:
The first bus capacitor energy storage in the PFC rectification circuits are powered by AC power and are the PFC rectifiers When, the first main switch high frequency chopping is controlled, controls the second rectifying tube high frequency chopping, and first main switch With the second rectifying tube alternating chopper;
Wherein, second rectifying tube is that first rectifying tube is removed in two rectifying tubes in the PFC rectification circuits Rectifying tube in addition.
Control device provided in an embodiment of the present invention, for controlling the PFC rectifiers of example offer of the present invention, including:
First control module, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in During the first bus capacitor energy storage, control the first main switch shutdown;
Second control module, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in During the first bus capacitor energy storage, control the second main switch conducting;
Third control module, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in During the first bus capacitor energy storage, the first rectifying tube high frequency chopping is controlled;
Wherein, first main switch be the PFC rectification circuits two main switches in first rectification The main switch that pipe is connected directly, second main switch be the PFC rectification circuits two main switches in except described Main switch other than first main switch;First bus capacitor is the positive pole line capacitance of the PFC rectification circuits and bears The bus capacitor being connected directly in bus capacitor with the first continued flow tube;First continued flow tube is in the PFC rectification circuits The continued flow tube being connected directly in two continued flow tubes with first rectifying tube.
Further, first control module is additionally operable to be powered by DC power supply in the PFC rectifiers and for institute When stating the second bus capacitor energy storage in PFC rectifiers, the first main switch conducting is controlled;
Second control module is additionally operable to be powered by DC power supply in the PFC rectifiers and for the PFC rectifications During the second bus capacitor energy storage in device, the second main switch high frequency chopping is controlled;
The third control module, the second bus capacitor being additionally operable in the PFC rectifiers is the PFC rectifiers During energy storage, the first rectifying tube high frequency chopping, and second main switch and the first rectifying tube alternating chopper are controlled;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
Further, second control module is additionally operable to be powered by AC power in the PFC rectifiers and for institute When stating the second bus capacitor energy storage in PFC rectifiers, the second main switch high frequency chopping is controlled;
The third control module, the second bus capacitor being additionally operable in the PFC rectifiers is the PFC rectifiers During energy storage, the first rectifying tube high frequency chopping, and second main switch and the first rectifying tube alternating chopper are controlled;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
Further, when the second rectifying tube in the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention is The switching tube of inverse parallel body diode or the parallel-connection structure for switch and diode, control dress provided in an embodiment of the present invention It puts and further includes the 4th control module;
4th control module, for being powered in the PFC rectification circuits by AC power and being the PFC rectifications During the first bus capacitor energy storage in device, the second rectifying tube high frequency chopping is controlled;
First control module is additionally operable to be powered by AC power in the PFC rectification circuits and whole for the PFC When flowing the first bus capacitor energy storage in device, control the first main switch high frequency chopping, and first main switch with The second rectifying tube alternating chopper;
Wherein, second rectifying tube is that first rectifying tube is removed in two rectifying tubes in the PFC rectification circuits Rectifying tube in addition.
The advantageous effect of the embodiment of the present invention includes:
A kind of PFC rectifiers provided in an embodiment of the present invention, uninterruptible power supply, control method and device, due to PFC rectifications The first rectifying tube in device is the switching tube of inverse parallel body diode or is the parallel-connection structure switched with diode, and first is whole Flow tube be in two rectifying tubes when PFC rectification circuits are operated under battery mode in the PFC rectification circuits with DC power supply Connected rectifying tube, therefore, (the first bus capacitor is in the case where PFC rectifiers are operated in battery mode and for the first bus capacitor The busbar that the continued flow tube being connect in the positive pole line capacitance of PFC rectification circuits and negative busbar capacitance with the first rectifying tube is connected directly Capacitance) energy storage when, the first rectifying tube high frequency chopping can be controlled, the main switch being connected directly with the first rectifying tube turns off, from And the switch in the switching tube conducting or the first rectifying tube in the first rectifying tube is when being closed, by for PFC rectifier power supplies It is PFC inductive energy storages that PFC inductance and the first rectifying tube in DC power supply, PFC rectifiers, which form tank circuit, and due to It is turned off with the main switch that the first rectifying tube is connected directly, therefore, tank circuit is disconnected with zero curve, and PFC rectification circuits are operated in When under battery mode, the voltage on electrode being connected in DC power supply with the first rectifying tube is equal to the first busbar of PFC rectifiers (the first busbar output terminal is electric with the first busbar in positive pole line output terminal and negative busbar output terminal in PFC rectifiers to output terminal Hold the output terminal that is connected directly) voltage, by the rectifying tube in two rectifying tubes of PFC rectifiers in addition to the first rectifying tube With the first continued flow tube divide after voltage (the first continued flow tube be PFC rectifiers two continued flow tubes in PFC rectifiers first The continued flow tube that rectifying tube is connected directly), which is less than the voltage of the first busbar output terminal of PFC rectifiers;And in PFC rectifications Device be operated under battery mode and for the first bus capacitor energy storage when, during PFC inductance releases energy, due to first Continued flow tube is connected, and the first busbar that the voltage on electrode being connected in DC power supply with the first rectifying tube is equal to PFC rectifiers is defeated The voltage of outlet, therefore, compared with the prior art in PFC rectification circuits due under battery mode and for the first busbar electricity The current potential of electrode that is connected when holding energy storage, in DC power supply with the first rectifying tube is in the current potential and the first busbar output terminal of zero curve Between current potential for high frequency saltus step, PFC rectifiers provided in an embodiment of the present invention, uninterruptible power supply, control method and device energy The amplitude of the jump in potential of electrode being connected in DC power supply with the first rectifying tube is enough reduced, it therefore reduces electromagnetic interference.
Description of the drawings
Fig. 1 a and Fig. 1 b are the structure diagram of PFC rectification circuits of the prior art;
Fig. 2 a- Fig. 4 b, Fig. 6 a- Figure 18 b are the structure diagram of Single-phase PFC rectifier provided in an embodiment of the present invention;
Fig. 5 is the schematic diagram of control signal that the first rectifying tube is received with second switch pipe;
Figure 19 a- Figure 34 b are the structure diagram of three-phase PFC rectifiers provided in an embodiment of the present invention;
Figure 35 is one of structure diagram of control device provided in an embodiment of the present invention;
Figure 36 is the second structural representation of control device provided in an embodiment of the present invention.
Specific embodiment
A kind of PFC rectifiers provided in an embodiment of the present invention, uninterruptible power supply, control method and device, due to whole in PFC Stream device be operated under battery mode and for the first bus capacitor energy storage when, can by for PFC rectifier power supplies DC power supply, It is PFC inductive energy storages, and can control energy storage that PFC inductance and the first rectifying tube in PFC rectifiers, which form tank circuit, Circuit and zero curve disconnect, and therefore, the voltage on electrode being connected in DC power supply with the first rectifying tube is equal to the of PFC rectifiers (the first busbar output terminal is with first in positive pole line output terminal and negative busbar output terminal in PFC rectifiers to one busbar output terminal The output terminal that bus capacitor is connected directly) voltage, by two rectifying tubes of PFC rectifiers in addition to the first rectifying tube Rectifying tube and the first continued flow tube partial pressure after voltage (the first continued flow tube be PFC rectifiers two continued flow tubes in PFC rectifiers The continued flow tube that is connected of the first rectifying tube), which is less than the voltage of the first busbar output terminal of PFC rectifiers;It is and whole in PFC Stream device is operated under battery mode and during for the first bus capacitor energy storage, during PFC inductance releases energy, due to the One continued flow tube is connected, and the voltage on electrode being connected in DC power supply with the first rectifying tube is equal to the first busbar of PFC rectifiers The voltage of output terminal, this compared with the prior art in PFC rectification circuits due under battery mode and for the first bus capacitor During energy storage, the current potential of electrode being connected in DC power supply with the first rectifying tube is in the current potential of zero curve and the electricity of the first busbar output terminal Between position for high frequency saltus step, PFC rectifiers provided in an embodiment of the present invention, uninterruptible power supply, control method and device can The amplitude of the jump in potential of the cathode of DC power supply is reduced, it therefore reduces electromagnetic interference.
With reference to the accompanying drawings of the specification, to a kind of PFC rectifiers provided in an embodiment of the present invention, DC power supply, controlling party Method and the specific embodiment of device illustrate.
When PFC rectifiers provided in an embodiment of the present invention are operated under battery mode as the direct current of PFC rectifier power supplies During the anode connection PFC inductance in source, the first bus capacitor in the PFC rectifiers is negative busbar capacitance, and the second bus capacitor is Positive pole line capacitance, the first busbar output terminal in the PFC rectifiers are negative busbar output terminal, and second in the PFC rectifiers is female Line output terminal is positive pole line output terminal, the first continued flow tube in the PFC rectifiers in two continued flow tubes of the PFC rectifiers with The continued flow tube that negative busbar capacitance is connected directly.
When PFC rectifiers provided in an embodiment of the present invention are operated under battery mode as the direct current of PFC rectifier power supplies The cathode connection PFC inductance in source, the first bus capacitor in the PFC rectifiers is positive pole line capacitance, and the second bus capacitor is negative Bus capacitor, the first busbar output terminal in PFC rectifiers are positive pole line output terminal, the second busbar output in PFC rectifiers Hold as negative busbar output terminal, the first continued flow tube in the PFC rectifiers in two continued flow tubes of the PFC rectifiers with negative busbar The continued flow tube that capacitance is connected directly.
The second continued flow tube in PFC rectifiers provided in an embodiment of the present invention is in two continued flow tube of the PFC rectifiers Continued flow tube in addition to the first continued flow tube, the first switch pipe in the PFC rectifiers is in two switching tube of the PFC rectifiers The switching tube being connected directly with the first continued flow tube, two switches of the second switch pipe for the PFC rectifiers in the PFC rectifiers Switching tube in pipe in addition to first switch pipe, the first rectifying tube in the PFC rectifiers are whole for two in the PFC rectifiers The rectifying tube being connected directly in flow tube with the first continued flow tube, the second rectifying tube in the PFC rectifiers is in the PFC rectifier Rectifying tube in two rectifying tubes in addition to the first rectifying tube.
When the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention are Single Phase PFC Rectifier, this hair A kind of PFC rectifiers that bright embodiment provides, as shown in Fig. 2 a or Fig. 2 b, including PFC rectification circuits;In the PFC rectification circuits The first rectifying tube 21 be the switching tube Q3 (shown in Fig. 3 a or Fig. 3 b) of inverse parallel body diode or be switch with diode Parallel-connection structure (parallel-connection structure for switch K3 and diode D2 in fig.4, in fig. 4b for switch K3 and diode D1's and It is coupled structure);Wherein, the first rectifying tube 21 is two when PFC rectification circuits are operated under battery mode in PFC rectification circuits whole The rectifying tube being connected in flow tube with DC power supply DC;When wherein, under battery mode, DC power supply DC is PFC rectifier power supplies.
When PFC rectifiers are operated under battery mode, in Fig. 2 a, Fig. 3 a or Fig. 4 a, the anode of DC power supply DC connects Connect the PFC inductance in PFC rectifiers, i.e. inductance L1;In Fig. 2 b, Fig. 3 b or Fig. 4 b, the cathode connection PFC of DC power supply DC is whole Flow the PFC inductance in device, i.e. inductance L1.
When the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention are for Single Phase PFC Rectifier and in PFC When rectifier is operated in the PFC inductance in the anode connection PFC rectifiers of DC power supply DC under battery mode, the embodiment of the present invention The PFC rectifiers of offer, as shown in Fig. 2 a, Fig. 3 a or Fig. 4 a, diode D1 and the first rectifying tube 21 (or opening in Fig. 3 a Close the switch K3 and the parallel-connection structure of diode D2 in pipe Q3 or Fig. 4 a) connecting to form the first branch, switching tube Q1 with open Pipe Q2 is closed to connect to form the second branch (tie point that switching tube Q1 is connected with switching tube Q2 is M points), PFC inductance, i.e. inductance L1 One end connection diode D1 and the first rectifying tube 21 (switch K3 in switching tube Q3 or Fig. 4 a in Fig. 3 a With the parallel-connection structure of diode D2) tie point that is connected;One end after the first branch is in parallel with the second branch passes through diode D3 One end of positive pole line capacitance, i.e. capacitance C1 is connected, one end that diode D3 is connected with capacitance C1 is defeated for the positive bus-bar of PFC rectifiers Outlet BUS+;The first branch connect negative busbar capacitance with the other end after the second branch parallel connection by the first continued flow tube 22, i.e., electric Hold one end of C2, the other end of the other end connection capacitance C1 of capacitance C2, the first continued flow tube 22 is with capacitance C2 one end being connected The negative busbar output terminal BUS- of PFC rectifiers;Capacitance C1 is with the voltage of the capacitance C2 tie points being connected in AC power AC Voltage on zero curve N.
When Fig. 2 a, Fig. 3 a or the PFC rectifiers shown in Fig. 4 a are operated under battery mode, PFC inductance, i.e. inductance L1 passes through The anode for switching K1 and DC power supply DC is connected, and switch K2 is closed.When the PFC rectifiers work shown in Fig. 2 a, Fig. 3 a or Fig. 4 a For the second bus capacitor under battery mode, i.e. during capacitance C1 (positive pole line capacitance) energy storage, shown in Fig. 2 a, Fig. 3 a or Fig. 4 a There are three types of working methods for PFC rectifiers.
The first working method is:21 high frequency chopping of the first rectifying tube in Fig. 2 a (cut by the switching tube Q3 high frequencies in Fig. 3 a Wave, the switch K3 high frequency choppings in Fig. 4 a), switching tube Q1 shutdowns, switching tube Q2 conductings;When (Fig. 3 a are connected in the first rectifying tube 21 In switching tube Q3 conductings, the switch K3 in Fig. 4 a is closed) when, anode, PFC inductance (i.e. electricity of the electric current by DC power supply DC Feel L1), the first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a), reach the cathode of DC power supply DC, form Tank circuit, inductance L1 energy storage;When the first rectifying tube 21 turns off, (the switching tube Q3 in Fig. 3 a is turned off, and the switch K3 in Fig. 4 a breaks Open) when, electric current passes through anode, inductance L1, diode D1, diode D3, capacitance C1, the switching tube Q2 of DC power supply DC, reaches The cathode of DC power supply DC forms continuous current circuit, and inductance L1 releases energy, capacitance C1 energy storage;That is, when PFC rectifiers During for capacitance C1 energy storage, DC power supply DC, inductance L1, the 21 (switch in switching tube Q3, Fig. 4 a in Fig. 3 a of the first rectifying tube K3), diode D1, diode D3, capacitance C1, switching tube Q2 composition boost circuits.Since switching tube Q2 is connected, direct current The current potential of the cathode of power supply DC is clamped the current potential on the zero curve for AC power AC.
Second of working method be:First rectifying tube 21 turns off (switching tube Q3 in Fig. 3 a shutdown, the switch K3 in Fig. 4 a Disconnect), switching tube Q1 high frequency choppings, switching tube Q2 conductings;When switching tube Q1 is connected, electric current is passing through DC power supply DC just Pole, inductance L1, diode D1, switching tube Q1, switching tube Q2 reach the cathode of DC power supply DC, form tank circuit, inductance L1 Energy storage;When switching tube Q1 is turned off, electric current passes through anode, inductance L1, diode D1, diode D3, the capacitance of DC power supply DC C1, switching tube Q2 reach the cathode of DC power supply DC, form continuous current circuit, and inductance L1 releases energy, capacitance C1 energy storage;Also To say, when PFC rectifiers be capacitance C1 energy storage when, DC power supply DC, inductance L1, diode D1, switching tube Q1, diode D3, Capacitance C1, switching tube Q2 form boost circuits.Since switching tube Q2 is connected, the current potential of the cathode of DC power supply DC is by pincers Position is the current potential on the zero curve of AC power AC.
The third working method is:First rectifying tube, 21 high frequency chopping (the switching tube Q3 high frequency choppings in Fig. 3 a, in Fig. 4 a Switch K3 high frequency choppings), switching tube Q1 high frequency choppings, switching tube Q2 conductings, and the 21 (switch in Fig. 3 a of the first rectifying tube Pipe Q3 high frequency choppings, the switch K3 high frequency choppings in Fig. 4 a) and switching tube Q1 alternating choppers;When PFC rectifiers are stored up for capacitance C1 During energy, DC power supply DC, inductance L1, the first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a), diode D1, diode D3, capacitance C1, switching tube Q2 form the first boost circuits, DC power supply DC, inductance L1, diode D1, switch Pipe Q1, diode D3, capacitance C1, switching tube Q2 form the 2nd boost circuits.And since switching tube Q2 is connected, direct current The current potential of the cathode of power supply DC is clamped the current potential on the zero curve for AC power AC.
When PFC rectifiers provided in an embodiment of the present invention be operated under battery mode and the anode of DC power supply DC connect During PFC inductance in PFC rectifiers, PFC rectifiers are implemented when for the second bus capacitor, i.e. capacitance C1 energy storage in the present invention PFC inductance in the PFC rectifiers that example provides, i.e. in the case that the ripple of electric current on inductance L1 is identical, according to the first During working method, control that the first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a) in Fig. 2 a receives Signal is the Ctr1 in Fig. 5, first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a) copped wave in Fig. 2 a Frequency is f, and (the switching tube Q3 conductings in Fig. 3 a, Fig. 4 a is connected in the first rectifying tube 21 when Ctr1 is high level in Fig. 2 a In switch K3 be closed), the first rectifying tube 21 when Ctr1 is low level in Fig. 2 a turns off that (the switching tube Q3 in Fig. 3 a is closed Switch K3 disconnected, in Fig. 4 a is disconnected);According to second of working method, the control signal that switching tube Q1 is received is in Fig. 5 Ctr2, the frequency of switching tube Q1 copped waves is f, and the switching tube Q1 conductings when Ctr2 is high level, is opened when Ctr2 is low level Close pipe Q1 shutdowns;In the third working method, the first rectifying tube 21 in Fig. 2 a is (in switching tube Q3, Fig. 4 a in Fig. 3 a Switch K3) the control signal that receives is the Ctr3 in Fig. 5, the first rectifying tube 21 (switching tube Q3, figure in Fig. 3 a in Fig. 2 a Switch K3 in 4a) copped wave frequency for f/2, and (Fig. 3 a are connected in the first rectifying tube 21 when Ctr3 is high level in Fig. 2 a In switching tube Q3 conductings, the switch K3 in Fig. 4 a is closed), when Ctr3 is low level, the first rectifying tube 21 turns off in Fig. 2 a (the switch K3 in switching tube Q3 shutdowns, Fig. 4 a in Fig. 3 a is disconnected), the control signal that switching tube Q1 is received is in Fig. 5 Ctr4, the frequency of switching tube Q1 copped waves is f/2, and the switching tube Q1 conductings when Ctr4 is high level, when Ctr4 is low level Switching tube Q1 is turned off, and therefore, can be dropped using the third working method in the case where the current ripples on PFC inductance are identical Low switching frequency, so as to reduce switching loss.Horizontal axis t in Fig. 5 represents the time.
Due in the first working method tank circuit by the first rectifying tube in DC power supply DC, inductance L1, Fig. 2 a 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a) are formed, and tank circuit is by direct current in second of working method Source DC, inductance L1, diode D1, switching tube Q1, switching tube Q2 are formed, and therefore, the tank circuit in the first working method is small Tank circuit in second of working method, circuit is smaller, and conduction loss is also just smaller, and the efficiency of PFC rectifiers is also got over Therefore height, the efficiency of PFC rectifiers can be improved using the first working method.
When the PFC rectifiers shown in Fig. 2 a, Fig. 3 a or Fig. 4 a are operated under battery mode as the first bus capacitor, i.e., negative mother During line capacitance (capacitance C2) energy storage, 21 high frequency chopping of the first rectifying tube in the PFC rectifiers shown in Fig. 2 a is (shown in Fig. 3 a The switch K3 high frequency choppings in switching tube Q3 high frequency choppings, Fig. 4 a in PFC rectifiers), switching tube Q1 conducting, switching tube Q2 close It is disconnected;When (the switch K3 in switching tube Q3 conductings, Fig. 4 a in Fig. 3 a is closed) is connected in the first rectifying tube 21 in Fig. 2 a, electric current By the anode of DC power supply DC, PFC inductance (i.e. inductance L1), the first rectifying tube 21 (in switching tube Q3, Fig. 4 a in Fig. 3 a Switch K3), the cathode of DC power supply DC is reached, forms tank circuit, inductance L1 energy storage;At this point, the electricity of DC power supply DC cathode Voltage of the voltage for negative busbar output terminal BUS- after diode D1 and the first continued flow tube 22 partial pressure is pressed, which is less than negative The voltage of busbar output terminal BUS-.When the first rectifying tube 21 in Fig. 2 a is turned off (in the switching tube Q3 shutdowns, Fig. 4 a in Fig. 3 a K3 is switched to disconnect) when, electric current continues by the anode of DC power supply DC, inductance L1, diode D1, switching tube Q1, capacitance C2, first Flow tube 22 reaches the cathode of DC power supply DC, forms continuous current circuit, and inductance L1 releases energy, capacitance C2 energy storage;At this point, due to First continued flow tube 22 is connected, and therefore, the current potential of the cathode of DC power supply DC is clamped the current potential on the zero curve for AC power AC; That is, when PFC rectifiers are capacitance C2 energy storage, the 21 (figure of the first rectifying tube in DC power supply DC, inductance L1, Fig. 2 a The switch K3 in switching tube Q3, Fig. 4 a in 3a), diode D1, switching tube Q1, capacitance C2, the first continued flow tube 22 composition boost Circuit.Therefore, Fig. 2 a, Fig. 3 a and the PFC rectifiers shown in Fig. 4 a are operated under battery mode, are the first bus capacitor, are born During bus capacitor energy storage, the saltus step of the current potential of electrode (i.e. the cathode of DC power supply) that is connected in DC power supply with the first rectifying tube Amplitude, be operated under battery mode less than PFC rectification circuits of the prior art, be negative busbar capacitive energy storage when, direct current The amplitude of the saltus step of the current potential of the cathode in source.
When Fig. 2 a, Fig. 3 a or the PFC rectifiers shown in Fig. 4 a are operated under utility mode, PFC inductance, i.e. inductance L1 passes through The firewire L for switching K1 and AC power AC is connected, and switch K2 is disconnected.When the PFC rectifiers work shown in Fig. 2 a, Fig. 3 a or Fig. 4 a When being positive pole line capacitance, i.e. capacitance C1 energy storage under utility mode, there are three types of Fig. 2 a, Fig. 3 a or PFC rectifiers shown in Fig. 4 a Working method.
In the first working method, the first rectifying tube 21 in Fig. 2 a disconnects (the switching tube Q3 disconnections in Fig. 3 a, Fig. 4 a In switch K3 disconnect), switching tube Q1 high frequency choppings;When switching tube Q1 is connected, electric current by AC power AC firewire L, Inductance L1, diode D1, switching tube Q1 reach the zero curve N of AC power AC, form tank circuit, inductance L1 energy storage;It is switching When pipe Q1 is turned off, electric current reaches exchange by the firewire L of AC power AC, inductance L1, diode D1, diode D3, capacitance C1 The zero curve N of power supply AC forms continuous current circuit, and inductance L1 releases energy, capacitance C1 energy storage;It is that is, defeated in AC power AC The positive half period of the alternating voltage gone out, AC power AC, inductance L1, diode D1, switching tube Q1, diode D3, capacitance C1 structures Into boost circuits.
In second of working method, 21 high frequency chopping of the first rectifying tube (the switching tube Q3 high frequencies in Fig. 3 a in Fig. 2 a Switch K3 high frequency choppings in copped wave, Fig. 4 a), switching tube Q1 shutdown;When the first rectifying tube 21 in Fig. 2 a is connected (in Fig. 3 a Switch K3 conductings in switching tube Q3 conductings, Fig. 4 a) when, electric current is by the firewire L, inductance L1, Fig. 2 a of AC power AC First rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a), the antiparallel body diodes of switching tube Q2 are reached and are handed over The zero curve N of galvanic electricity source AC forms tank circuit, inductance L1 energy storage;The first rectifying tube 21 in fig. 2 a turns off (opening in Fig. 3 a Close the switch K3 shutdowns in pipe Q3 shutdowns, Fig. 4 a) when, electric current is by the firewire L of AC power AC, inductance L1, diode D1, two Pole pipe D3, capacitance C1 reach the zero curve N of AC power AC, form continuous current circuit, and inductance L1 releases energy, capacitance C1 energy storage; That is in the positive half period of the AC power AC alternating voltages exported, first in AC power AC, inductance L1, Fig. 2 a is whole Flow tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a), diode D1, the antiparallel body diodes of switching tube Q2, two Pole pipe D3, capacitance C1 form boost circuits.
In the third working method, 21 high frequency chopping of the first rectifying tube (the switching tube Q3 high frequencies in Fig. 3 a in Fig. 2 a Switch K3 high frequency choppings in copped wave, Fig. 4 a), switching tube Q1 high frequency choppings, and the first rectifying tube 21 in Fig. 2 a is (in Fig. 3 a Switch K3 high frequency choppings in switching tube Q3 high frequency choppings, Fig. 4 a) with switching tube Q1 alternating choppers, switching tube Q3 in Fig. 3 a with Switching tube Q1 alternating choppers, switch K3 and switching tube Q1 alternating choppers in Fig. 4 a.In the alternating voltage of AC power AC outputs Positive half period, AC power AC, inductance L1, diode D1, switching tube Q1, diode D3, capacitance C1 form a boost electricity Road;The first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 a in Fig. 3 a) in AC power AC, inductance L1, Fig. 2 a, two Pole pipe D1, the antiparallel body diodes of switching tube Q2, diode D3, capacitance C1 form another boost circuit.
When PFC rectifiers provided in an embodiment of the present invention are operated in the positive half cycle of the alternating voltage of AC power AC outputs Phase, in the case that ripple on PFC inductance, that is, inductance L1 is identical, using opening in PFC rectifiers during the third working method The switching frequency that off and on closes pipe is minimum, and therefore, the switching loss using PFC rectifiers during the third working method is minimum.
It is negative busbar capacitance when the PFC rectifiers shown in Fig. 2 a are operated under utility mode, i.e. capacitance C2 energy storage is being handed over During the negative half-cycle of the alternating voltage of galvanic electricity source AC outputs, the first rectifying tube 21 in Fig. 2 a is connected, switching tube Q2 high frequency choppings; When switching tube Q2 is connected, electric current is by the zero curve N of AC power AC, switching tube Q2, the first rectifying tube 21, inductance L1, arrival The firewire L of AC power AC forms tank circuit, inductance L1 energy storage;When switching tube Q2 is turned off, electric current passes through AC power AC Zero curve N, capacitance C2, the first continued flow tube 22, the first rectifying tube 21, inductance L1, reach the firewire L of AC power AC, form continuous Road is flowed back to, inductance L1 releases energy, capacitance C2 energy storage;That is, the negative half period of the alternating voltage in AC power AC outputs Phase, AC power AC, switching tube Q2, capacitance C2, the first continued flow tube 22, the first rectifying tube 21, inductance L1 form boost circuits.
It is negative busbar capacitance that PFC rectifiers shown in Fig. 3 a, which are operated under utility mode, i.e. capacitance C2 energy storage is exchanging During the negative half-cycle of the alternating voltage of power supply AC outputs, working method and the PFC rectifiers shown in Fig. 2 a of the PFC rectifiers Working method is identical, differs only in:In Fig. 2 a the first rectifying tube 21 conducting refer in Fig. 3 a switching tube Q3 conducting or Person's switching tube Q3 is turned off, and when the switching tube Q3 conductings in Fig. 3 a, switching tube Q3 and its antiparallel body diode are equivalent to figure The first rectifying tube 21 in 2a;When the switching tube Q3 shutdowns in Fig. 3 a, the antiparallel body diode of switching tube Q3 is equivalent to The first rectifying tube 21 in Fig. 2 a.
It is negative busbar capacitance that PFC rectifiers shown in Fig. 4 a, which are operated under utility mode, i.e. capacitance C2 energy storage is exchanging During the negative half-cycle of the alternating voltage of power supply AC outputs, working method and the PFC rectifiers shown in Fig. 2 a of the PFC rectifiers Working method is identical, differs only in:The first rectifying tube 21 conducting in Fig. 2 a refer to switch K3 in Fig. 4 a be closed or It switchs K3 to disconnect, when the switch K3 in Fig. 4 a is closed, the parallel-connection structure of switch K3 and diode D2 is equivalent to the in Fig. 2 a One rectifying tube 21;When the switch K3 in Fig. 4 a is disconnected, and that switch K3 diode D2 in parallel are equivalent in Fig. 2 a is first whole Flow tube 21.
Preferably, the diode D1 in PFC rectifiers as shown in Figure 2 a can also replace with inverse parallel body diode Switching tube or the parallel-connection structure for replacing with switch and diode, structure such as Fig. 6 a of the PFC rectifiers after replacement shown in Fig. 2 a Shown, in Fig. 6 a, the second rectifying tube 23 can be the switching tube of inverse parallel body diode, or switch and diode Parallel-connection structure.When PFC rectifiers shown in Fig. 6 a are operated under utility mode as negative busbar capacitance, i.e. capacitance C2 energy storage, PFC is whole Flowing device, there are three types of working methods.
In the first working method, the first rectifying tube 21 in Fig. 6 a is connected, switching tube Q2 high frequency choppings, the second rectification Pipe 23 turns off;In the negative half-cycle of the alternating voltage of AC power AC outputs, AC power AC, switching tube Q2, capacitance C2, first Continued flow tube 22, the first rectifying tube 21, inductance L1 form boost circuits.
In second of working method, the first rectifying tube 21 in Fig. 6 a is connected, switching tube Q2 is turned off, the second rectifying tube 23 High frequency chopping;AC power AC output alternating voltage negative half-cycle, AC power AC, switching tube Q1 antiparallel body Diode, the second rectifying tube 23, capacitance C2, the first continued flow tube 22, the first rectifying tube 21, inductance L1 form boost circuits.Its In, when the second rectifying tube 23 in Fig. 6 a is the switching tube of inverse parallel body diode, 23 high frequency of the second rectifying tube in Fig. 6 a Copped wave refers to switching tube high frequency chopping;When the second rectifying tube 23 in Fig. 6 a is the parallel-connection structure of switch and diode, Fig. 6 a In 23 high frequency chopping of the second rectifying tube refer to switch high-frequency copped wave.
In the third working method, the first rectifying tube 21 in Fig. 6 a is connected, switching tube Q2 high frequency choppings, the second rectification 23 high frequency chopping of pipe;AC power AC output alternating voltage negative half-cycle, AC power AC, switching tube Q2, capacitance C2, First continued flow tube 22, the first rectifying tube 21, inductance L1 form a boost circuit;The inverse parallel of AC power AC, switching tube Q1 Body diode, the second rectifying tube 23, capacitance C2, the first continued flow tube 22, the first rectifying tube 21, inductance L1 form another Boost circuits.
When the PFC rectifiers shown in Fig. 6 a are operated under utility mode, for negative busbar capacitance, i.e. capacitance C2 energy storage (exists The negative half-cycle of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Fig. 6 a, When the first rectifying tube 21 in Fig. 6 a is the switching tube of inverse parallel body diode, the first rectifying tube 21 conducting in Fig. 6 a refers to Switching tube is connected or switching tube shutdown, and when switching tube is connected, switching tube and its antiparallel body diode are equivalent to Fig. 6 a In the first rectifying tube 21;When switching tube turns off, first that the antiparallel body diode of switching tube is equivalent in Fig. 6 a is whole Flow tube 21.When the first rectifying tube 21 in Fig. 6 a is the parallel-connection structure of switch and diode, the first rectifying tube 21 in Fig. 6 a Conducting refers to that switch is closed or switch disconnects, and when the switch is closed, the parallel-connection structure of switch and diode is equivalent in Fig. 6 a The first rectifying tube 21;When the switch in Fig. 6 a disconnects, with the first rectification of the diode equivalent of switch in parallel in Fig. 6 a Pipe 21.
When the PFC rectifiers shown in Fig. 6 a are operated under utility mode, for negative busbar capacitance, i.e. capacitance C2 energy storage (exists The negative half-cycle of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Fig. 6 a, When the second rectifying tube 23 in Fig. 6 a is the switching tube of inverse parallel body diode, the shutdown of the second rectifying tube 23 refers to that switching tube closes Disconnected, when the second rectifying tube 23 in Fig. 6 a is the parallel-connection structure of switch and diode, the shutdown of the second rectifying tube 23 refers to switch It disconnects.
When the PFC rectifiers shown in Fig. 6 a are operated under utility mode, for negative busbar capacitance, i.e. capacitance C2 energy storage (exists The negative half-cycle of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Fig. 6 a, When the second rectifying tube 23 in Fig. 6 a is the switching tube of inverse parallel body diode, 23 high frequency chopping of the second rectifying tube refers to switch Pipe high frequency chopping, when the second rectifying tube 23 in Fig. 6 a is the parallel-connection structure of switch and diode, 23 high frequency of the second rectifying tube Copped wave refers to switch high-frequency copped wave.
Further, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention The PFC rectifiers that embodiment provides are as shown in Fig. 7 a, Fig. 8 a, Fig. 9 a;Wherein, the operation principle of the PFC rectifiers shown in Fig. 7 a Identical with the operation principle of the PFC rectifiers shown in Fig. 2 a, details are not described herein;The work of PFC rectifiers shown in Fig. 8 a is former Reason is identical with the operation principle of the PFC rectifiers shown in Fig. 3 a, and details are not described herein;The work of PFC rectifiers shown in Fig. 9 a Principle is identical with the operation principle of the PFC rectifiers shown in Fig. 4 a, and details are not described herein.
Fig. 7 a, Fig. 8 a or the PFC rectifiers shown in Fig. 9 a are operated under battery mode when being negative busbar capacitive energy storage, During PFC inductance, i.e. inductance L1 energy storage, switching tube Q1 conductings, the voltage of the cathode of DC power supply DC is exported for negative busbar Voltage after holding the junction capacity partial pressure of junction capacity and diode D4 of the voltage of BUS- by diode D1, also, diode D4 Junction capacity it is bigger, the voltage of the cathode of DC power supply DC is just closer to the voltage of negative busbar output terminal BUS-.
It is thus preferable to when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, this The PFC rectifiers that inventive embodiments provide further include the first capacitance, i.e. capacitance C5, and the first capacitance is in parallel with the first continued flow tube, this When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 10 a, Figure 11 a, Figure 12 a;Wherein, the PFC rectifications shown in Figure 10 a The operation principle of device is identical with the operation principle of the PFC rectifiers shown in Fig. 2 a, and details are not described herein;PFC shown in Figure 11 a is whole The operation principle for flowing device is identical with the operation principle of the PFC rectifiers shown in Fig. 3 a, and details are not described herein;PFC shown in Figure 12 a The operation principle of rectifier is identical with the operation principle of the PFC rectifiers shown in Fig. 4 a, and details are not described herein.
In Figure 10 a, Figure 11 a and Figure 12 a, due to the both ends of diode D4 capacitance C5 in parallel, this, which is equivalent to, increases The junction capacity of diode D4, therefore, it is negative mother that Figure 10 a, Figure 11 a or the PFC rectifiers shown in Figure 12 a, which are operated under battery mode, During line capacitance energy storage, in PFC inductance, i.e., during inductance L1 energy storage, the voltage of the cathode of DC power supply DC is more nearly negative The voltage of busbar output terminal BUS-.
Optionally, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention is real The PFC rectifiers for applying example offer further include first switch, that is, switch K3, first switch is in parallel with the first continued flow tube, at this point, this hair The PFC rectifiers that bright embodiment provides are as shown in Figure 13 a, Figure 14 a, Figure 15 a.First in Figure 13 a, Figure 14 a or Figure 15 a opens It closes, that is, switchs K3 and disconnected when PFC rectifiers are operated in utility mode, at this point, the first continued flow tube is equivalent to a diode;Figure First switch in 13a, Figure 14 a or Figure 15 a switchs K3 in the case where PFC rectifiers are operated in battery mode as in PFC rectifiers Positive pole line capacitance, i.e. capacitance C1 energy storage when disconnect, at this point, the first continued flow tube is equivalent to a diode;Figure 13 a, Figure 14 a or First switch in Figure 15 a, that is, it is the negative busbar electricity in PFC rectifiers to switch K3 in the case where PFC rectifiers are operated in battery mode Hold, i.e. PFC inductance during capacitance C2 energy storage, is i.e. disconnects or be closed when inductance L1 releases energy, at this time due to Figure 13 a, PFC rectifiers shown in Figure 14 a or Figure 15 a are operated under battery mode as the negative busbar capacitance in PFC rectifiers, i.e. capacitance C2 PFC inductance during energy storage, i.e., when inductance L1 releases energy, since diode D4 is connected, the cathode of DC power supply DC Current potential be equal to negative busbar output terminal BUS- voltage.First switch in Figure 13 a, Figure 14 a or Figure 15 a switchs K3 in PFC Rectifier is operated under battery mode as the negative busbar capacitance in PFC rectifiers, i.e. PFC inductance during capacitance C2 energy storage, I.e. inductance L1 storage energies when be closed, at this point, the current potential of the cathode of DC power supply DC be equal to negative busbar output terminal BUS- voltage.
Therefore, Figure 13 a, Figure 14 a and the PFC rectifiers shown in Figure 15 a are operated under battery mode, are stored up for negative busbar capacitance During energy, the current potential of the cathode of DC power supply DC will not saltus step.
The operation principle of circuit in PFC rectifiers shown in Figure 13 a in addition to K3 is switched and the PFC rectifications shown in Fig. 7 a The operation principle of device is identical, and details are not described herein;The work of circuit in PFC rectifiers shown in Figure 14 a in addition to K3 is switched Principle is identical with the operation principle of the PFC rectifiers shown in Fig. 8 a, and details are not described herein;It is removed in PFC rectifiers shown in Figure 15 a The operation principle for switching the circuit other than K3 is identical with the operation principle of the PFC rectifiers shown in Fig. 9 a, and details are not described herein.
When the switching tube that the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is inverse parallel body diode When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 16 a, Figure 17 a, Figure 18 a.Figure 16 a, Figure 17 a, shown in Figure 18 a Switching tube Q3 and its antiparallel body diode in PFC rectifiers are equivalent to the diode in Figure 13 a, Figure 14 a and Figure 15 a Structure in parallel with switch K3 D4;Wherein, the antiparallel body diode of switching tube Q3 is equivalent to diode D4, switching tube Q3 etc. It imitates in switch K3.The operation principle of PFC rectifiers shown in Figure 16 a and the operation principle phase of the PFC rectifiers shown in Figure 13 a Together, details are not described herein;The operation principle of PFC rectifiers shown in Figure 17 a and the work of the PFC rectifiers shown in Figure 14 a are former Manage identical, details are not described herein;The operation principle of PFC rectifiers shown in Figure 18 a and the work of the PFC rectifiers shown in Figure 15 a It is identical to make principle, details are not described herein.
When the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention are for Single Phase PFC Rectifier and in PFC When rectifier is operated in the PFC inductance in the cathode connection PFC rectifiers of DC power supply DC under battery mode, the embodiment of the present invention The PFC rectifiers of offer, as shown in Fig. 2 b, Fig. 3 b or Fig. 4 b, diode D2 and the first rectifying tube 21 (or opening in Fig. 3 a Close the switch K3 and the parallel-connection structure of diode D1 in pipe Q3 or Fig. 4 a) connecting to form the first branch, switching tube Q1 with open Pipe Q2 is closed to connect to form the second branch, one end of PFC inductance, i.e. inductance L1 connect diode D2 and the first rectifying tube 21 (or It is the switch K3 and the parallel-connection structure of diode D1 in switching tube Q3 or Fig. 4 a in Fig. 3 a) tie point that is connected;First Branch connect one end of positive pole line capacitance, i.e. capacitance C1 with one end after the second branch parallel connection by the first continued flow tube 22, and first One end that continued flow tube 22 is connected with capacitance C1 is the positive pole line output terminal BUS+ of PFC rectifiers;The first branch and the second branch are simultaneously The other end after connection passes through diode D4 connection negative busbar capacitances, i.e. one end of capacitance C2, the other end connection capacitance of capacitance C2 The other end of C1, one end that diode D4 is connected with capacitance C2 are the negative busbar output terminal BUS- of PFC rectifiers;Capacitance C1 and electricity It is the voltage on the zero curve N in AC power AC to hold the voltage of tie point that C2 is connected.
When Fig. 2 b, Fig. 3 b or the PFC rectifiers shown in Fig. 4 b are operated under battery mode, PFC inductance, i.e. inductance L1 passes through The cathode for switching K1 and DC power supply DC is connected, and switch K2 is closed.When the PFC rectifiers work shown in Fig. 2 b, Fig. 3 b or Fig. 4 b For the second bus capacitor under battery mode, i.e. during capacitance C2 (negative busbar capacitance) energy storage, shown in Fig. 2 b, Fig. 3 b or Fig. 4 b There are three types of working methods for PFC rectifiers.
The first working method is:21 high frequency chopping of the first rectifying tube in Fig. 2 b (cut by the switching tube Q3 high frequencies in Fig. 3 b Wave, the switch K3 high frequency choppings in Fig. 4 b), switching tube Q1 conductings, switching tube Q2 shutdowns;When (Fig. 3 b are connected in the first rectifying tube 21 In switching tube Q3 conductings, the switch K3 in Fig. 4 b is closed) when, electric current passes through anode, the first rectifying tube 21 of DC power supply DC (the switch K3 in switching tube Q3, Fig. 4 b in Fig. 3 b), PFC inductance (i.e. inductance L1) reach the cathode of DC power supply DC, form Tank circuit, inductance L1 energy storage;When the first rectifying tube 21 turns off, (the switching tube Q3 in Fig. 3 b is turned off, and the switch K3 in Fig. 4 b breaks Open) when, electric current passes through anode, switching tube Q1, capacitance C2, diode D4, diode D2, the inductance L1 of DC power supply DC, reaches The cathode of DC power supply DC forms continuous current circuit, and inductance L1 releases energy, capacitance C2 energy storage;That is, when PFC rectifiers During for capacitance C2 energy storage, DC power supply DC, inductance L1, the 21 (switch in switching tube Q3, Fig. 4 b in Fig. 3 b of the first rectifying tube K3), switching tube Q1, capacitance C2, diode D4, diode D2 composition boost circuits.Since switching tube Q1 is connected, direct current The current potential of the anode of power supply DC is clamped the current potential on the zero curve for AC power AC.
Second of working method be:First rectifying tube 21 turns off (switching tube Q3 in Fig. 3 b shutdown, the switch K3 in Fig. 4 b Disconnect), switching tube Q1 conductings, switching tube Q2 high frequency choppings;When switching tube Q2 is connected, electric current is passing through DC power supply DC just Pole, switching tube Q1, switching tube Q2, diode D2, inductance L1 reach the cathode of DC power supply DC, form tank circuit, inductance L1 Energy storage;When switching tube Q2 is turned off, electric current is by the anode of DC power supply DC, switching tube Q1, capacitance C2, diode D4, two poles Pipe D2, inductance L1 reach the cathode of DC power supply DC, form continuous current circuit, and inductance L1 releases energy, capacitance C2 energy storage;Also It is to say, when PFC rectifiers are capacitance C2 energy storage, DC power supply DC, inductance L1, switching tube Q1, switching tube Q2, capacitance C2, two Pole pipe D4, diode D2 form boost circuits.Since switching tube Q1 is connected, the current potential of the anode of DC power supply DC is by pincers Position is the current potential on the zero curve of AC power AC.
The third working method is:First rectifying tube, 21 high frequency chopping (the switching tube Q3 high frequency choppings in Fig. 3 b, in Fig. 4 b Switch K3 high frequency choppings), switching tube Q1 conductings, switching tube Q2 high frequency choppings, the and 21 (switch in Fig. 3 b of the first rectifying tube Pipe Q3 high frequency choppings, the switch K3 high frequency choppings in Fig. 4 b) and switching tube Q1 alternating choppers;When PFC rectifiers are stored up for capacitance C2 During energy, DC power supply DC, inductance L1, the first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 b in Fig. 3 b), switching tube Q1, capacitance C2, diode D4, diode D2 form the first boost circuits, DC power supply DC, inductance L1, switching tube Q1, switch Pipe Q2, capacitance C2, diode D4, diode D2 form the 2nd boost circuits.And since switching tube Q1 is connected, direct current The current potential of the anode of power supply DC is clamped the current potential on the zero curve for AC power AC.
When PFC rectifiers provided in an embodiment of the present invention be operated under battery mode and the cathode of DC power supply DC connect During PFC inductance in PFC rectifiers, PFC rectifiers are implemented when for the second bus capacitor, i.e. capacitance C2 energy storage in the present invention PFC inductance in the PFC rectifiers that example provides, i.e. in the case that the ripple of electric current on inductance L1 is identical, using the third work The switching frequency of switch or switching tube when making mode is minimum, therefore, using the switch of PFC rectifiers during the third working method It is lost minimum.
Due in the first working method tank circuit by the first rectifying tube in DC power supply DC, inductance L1, Fig. 2 b 21 (the switch K3 in switching tube Q3, Fig. 4 b in Fig. 3 b) are formed, and tank circuit is by direct current in second of working method Source DC, switching tube Q1, switching tube Q2, diode D2, inductance L1 are formed, and therefore, the tank circuit in the first working method is small Tank circuit in second of working method, circuit is smaller, and conduction loss is also just smaller, and the efficiency of PFC rectifiers is also got over Therefore height, the efficiency of PFC rectifiers can be improved using the first working method.
When the PFC rectifiers shown in Fig. 2 b, Fig. 3 b or Fig. 4 b are operated under battery mode as the first bus capacitor, i.e. positive pole During line capacitance (capacitance C1) energy storage, 21 high frequency chopping of the first rectifying tube in the PFC rectifiers shown in Fig. 2 b is (shown in Fig. 3 b The switch K3 high frequency choppings in switching tube Q3 high frequency choppings, Fig. 4 b in PFC rectifiers), switching tube Q1 shutdowns, switching tube Q2 leads It is logical;When (the switch K3 in switching tube Q3 conductings, Fig. 4 b in Fig. 3 b is closed) is connected in the first rectifying tube 21 in Fig. 2 b, electric current By the anode of DC power supply DC, the first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 b in Fig. 3 b), PFC inductance (i.e. Inductance L1), the cathode of DC power supply DC is reached, forms tank circuit, inductance L1 energy storage;At this point, the electricity of DC power supply DC cathode Voltage of the voltage for positive pole line output terminal BUS+ after diode D2 and the first continued flow tube 22 partial pressure is pressed, which is less than just The voltage of busbar output terminal BUS+.When the first rectifying tube 21 in Fig. 2 b is turned off (in the switching tube Q3 shutdowns, Fig. 4 b in Fig. 3 b K3 is switched to disconnect) when, electric current by the anode of DC power supply DC, the first continued flow tube 22, capacitance C1, switching tube Q2, diode D2, Inductance L1 reaches the cathode of DC power supply DC, forms continuous current circuit, and inductance L1 releases energy, capacitance C1 energy storage;At this point, due to First continued flow tube 22 is connected, and therefore, the current potential of the cathode of DC power supply DC is clamped the current potential on the zero curve for AC power AC; That is, when PFC rectifiers are capacitance C1 energy storage, the 21 (figure of the first rectifying tube in DC power supply DC, inductance L1, Fig. 2 b The switch K3 in switching tube Q3, Fig. 4 b in 3b), the first continued flow tube 22, capacitance C1, switching tube Q2, diode D2 composition boost Circuit.Therefore, PFC rectifiers provided in an embodiment of the present invention are operated under battery mode, are the first bus capacitor, i.e. positive bus-bar During capacitive energy storage, the width of the saltus step of the current potential of electrode (i.e. the anode of DC power supply) that is connected in DC power supply with the first rectifying tube Degree, is operated in less than PFC rectification circuits of the prior art under battery mode, when being positive bus-bar capacitive energy storage, DC power supply The amplitude of the saltus step of the current potential of anode.
When Fig. 2 b, Fig. 3 b or the PFC rectifiers shown in Fig. 4 b are operated under utility mode, PFC inductance, i.e. inductance L1 passes through The firewire L for switching K1 and AC power AC is connected, and switch K2 is disconnected.When the PFC rectifiers work shown in Fig. 2 b, Fig. 3 b or Fig. 4 b When being negative busbar capacitance, i.e. capacitance C2 energy storage under utility mode, there are three types of Fig. 2 b, Fig. 3 b or PFC rectifiers shown in Fig. 4 b Working method.
In the first working method, the first rectifying tube 21 in Fig. 2 b disconnects (the switching tube Q3 disconnections in Fig. 3 b, Fig. 4 b In switch K3 disconnect), switching tube Q2 high frequency choppings;When switching tube Q1 is connected, electric current by AC power AC zero curve N, Switching tube Q2, diode D2, inductance L1 reach the firewire L of AC power AC, form tank circuit, inductance L1 energy storage;It is switching When pipe Q2 is turned off, electric current reaches exchange by the zero curve N of AC power AC, capacitance C2, diode D4, diode D2, inductance L1 The firewire L of power supply AC forms continuous current circuit, and inductance L1 releases energy, capacitance C2 energy storage;It is that is, defeated in AC power AC The negative half-cycle of the alternating voltage gone out, AC power AC, switching tube Q2, diode D2, inductance L1, capacitance C2, diode D4 structures Into boost circuits.
In second of working method, 21 high frequency chopping of the first rectifying tube (the switching tube Q3 high frequencies in Fig. 3 b in Fig. 2 b Switch K3 high frequency choppings in copped wave, Fig. 4 b), switching tube Q2 shutdown;When the first rectifying tube 21 in Fig. 2 b is connected (in Fig. 3 b Switch K3 conductings in switching tube Q3 conductings, Fig. 4 b) when, electric current is antiparallel by zero curve N, the switching tube Q1 of AC power AC The first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 b in Fig. 3 b), inductance L1 in body diode, Fig. 2 b are reached and are handed over The firewire L of galvanic electricity source AC forms tank circuit, inductance L1 energy storage;The first rectifying tube 21 in figure 2b turns off (opening in Fig. 3 b Close the switch K3 shutdowns in pipe Q3 shutdowns, Fig. 4 b) when, electric current is by the zero curve N of AC power AC, capacitance C2, diode D4, two Pole pipe D2, inductance L1 reach the firewire L of AC power AC, form continuous current circuit, and inductance L1 releases energy, capacitance C2 energy storage; That is the negative half-cycle of the alternating voltage in AC power AC outputs, antiparallel two pole of body of AC power AC, switching tube Q1 Pipe, the first rectifying tube 21 (the switch K3 in switching tube Q3, Fig. 4 b in Fig. 3 b) in Fig. 2 b, inductance L1, capacitance C2, diode D4, diode D2 form boost circuits.
In the third working method, 21 high frequency chopping of the first rectifying tube (the switching tube Q3 high frequencies in Fig. 3 b in Fig. 2 b Switch K3 high frequency choppings in copped wave, Fig. 4 b), switching tube Q2 high frequency choppings, and the first rectifying tube 21 in Fig. 2 b is (in Fig. 3 b Switch K3 high frequency choppings in switching tube Q3 high frequency choppings, Fig. 4 b) with switching tube Q2 alternating choppers, switching tube Q3 in Fig. 3 a with Switching tube Q1 alternating choppers, switch K3 and switching tube Q1 alternating choppers in Fig. 4 a.In the alternating voltage of AC power AC outputs Negative half-cycle, AC power AC, switching tube Q2, diode D2, inductance L1, capacitance C2, diode D4 form a boost electricity Road;In AC power AC, the antiparallel body diodes of switching tube Q1, Fig. 2 b the first rectifying tube 21 (switching tube Q3 in Fig. 3 b, Switch K3 in Fig. 4 b), inductance L1, capacitance C2, diode D4, diode D2 form another boost circuit.
When PFC rectifiers provided in an embodiment of the present invention are operated in the negative half period of the alternating voltage of AC power AC outputs Phase, in the case that ripple on PFC inductance, that is, inductance L1 is identical, using opening in PFC rectifiers during the third working method The switching frequency that off and on closes pipe is minimum, and therefore, the switching loss using PFC rectifiers during the third working method is minimum.
It is positive pole line capacitance when the PFC rectifiers shown in Fig. 2 b are operated under utility mode, i.e. capacitance C1 energy storage is being handed over During the positive half period of the alternating voltage of galvanic electricity source AC outputs, the first rectifying tube 21 in Fig. 2 b is connected, switching tube Q1 high frequency choppings; When switching tube Q1 is connected, electric current is by the firewire L of AC power AC, inductance L1, the first rectifying tube 21, switching tube Q1, arrival The zero curve N of AC power AC forms tank circuit, inductance L1 energy storage;When switching tube Q1 is turned off, electric current passes through AC power AC Firewire L, inductance L1, the first rectifying tube 21, the first continued flow tube 22, capacitance C1, reach the zero curve N of AC power AC, form continuous Road is flowed back to, inductance L1 releases energy, capacitance C1 energy storage;That is, the positive half cycle of the alternating voltage in AC power AC outputs Phase, AC power AC, inductance L1, the first rectifying tube 21, switching tube Q1, the first continued flow tube 22, capacitance C1 form boost circuits.
It is positive pole line capacitance that PFC rectifiers shown in Fig. 3 b, which are operated under utility mode, i.e. capacitance C1 energy storage is exchanging During the positive half period of the alternating voltage of power supply AC outputs, working method and the PFC rectifiers shown in Fig. 2 b of the PFC rectifiers Working method is identical, differs only in:In Fig. 2 b the first rectifying tube 21 conducting refer in Fig. 3 b switching tube Q3 conducting or Person's switching tube Q3 is turned off, and when the switching tube Q3 conductings in Fig. 3 b, switching tube Q3 and its antiparallel body diode are equivalent to figure The first rectifying tube 21 in 2b;When the switching tube Q3 shutdowns in Fig. 3 b, the antiparallel body diode of switching tube Q3 is equivalent to The first rectifying tube 21 in Fig. 2 b.
It is positive pole line capacitance that PFC rectifiers shown in Fig. 4 b, which are operated under utility mode, i.e. capacitance C1 energy storage is exchanging During the positive half period of the alternating voltage of power supply AC outputs, working method and the PFC rectifiers shown in Fig. 2 b of the PFC rectifiers Working method is identical, differs only in:The first rectifying tube 21 conducting in Fig. 2 b refer to switch K3 in Fig. 4 b be closed or It switchs K3 to disconnect, when the switch K3 in Fig. 4 b is closed, the parallel-connection structure of switch K3 and diode D1 is equivalent to the in Fig. 2 b One rectifying tube 21;When the switch K3 in Fig. 4 b is disconnected, and that switch K3 diode D1 in parallel are equivalent in Fig. 2 b is first whole Flow tube 21.
Preferably, the diode D2 in PFC rectifiers as shown in Figure 2 b can also replace with inverse parallel body diode Switching tube or the parallel-connection structure for replacing with switch and diode, structure such as Fig. 6 b of the PFC rectifiers after replacement shown in Fig. 2 b Shown, in figure 6b, the second rectifying tube 23 can be the switching tube of inverse parallel body diode, or switch and diode Parallel-connection structure.When PFC rectifiers shown in Fig. 6 b are operated under utility mode as positive pole line capacitance, i.e. capacitance C1 energy storage, PFC is whole Flowing device, there are three types of working methods.
In the first working method, the first rectifying tube 21 in Fig. 6 b is connected, switching tube Q1 high frequency choppings, the second rectification Pipe 23 turns off;AC power AC output alternating voltage positive half period, AC power AC, inductance L1, the first rectifying tube 21, Switching tube Q1, the first continued flow tube 22, capacitance C1 form boost circuits.
In second of working method, the first rectifying tube 21 in Fig. 6 b is connected, switching tube Q1 is turned off, the second rectifying tube 23 High frequency chopping;AC power AC output alternating voltage positive half period, AC power AC, inductance L1, the second rectifying tube 23, The antiparallel body diode of switching tube Q2, the first rectifying tube 21, the first continued flow tube 22, capacitance C1 form boost circuits.Its In, when the second rectifying tube 23 in Fig. 6 b is the switching tube of inverse parallel body diode, 23 high frequency of the second rectifying tube in Fig. 6 b Copped wave refers to switching tube high frequency chopping;When the second rectifying tube 23 in Fig. 6 b is the parallel-connection structure of switch and diode, Fig. 6 b In 23 high frequency chopping of the second rectifying tube refer to switch high-frequency copped wave.
In the third working method, the first rectifying tube 21 in Fig. 6 b is connected, switching tube Q1 high frequency choppings, the second rectification 23 high frequency chopping of pipe;In the positive half period of the alternating voltage of AC power AC outputs, AC power AC, inductance L1, the first rectification Pipe 21, switching tube Q1, the first continued flow tube 22, capacitance C1 form a boost circuit;AC power AC, inductance L1, the second rectification Pipe 23, the antiparallel body diode of switching tube Q2, the first rectifying tube 21, the first continued flow tube 22, capacitance C1 form another Boost circuits.
When the PFC rectifiers shown in Fig. 6 b are operated under utility mode, for positive pole line capacitance, i.e. capacitance C1 energy storage (exists The positive half period of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Fig. 6 b, When the first rectifying tube 21 in Fig. 6 b is the switching tube of inverse parallel body diode, the first rectifying tube 21 conducting in Fig. 6 b refers to Switching tube is connected or switching tube shutdown, and when switching tube is connected, switching tube and its antiparallel body diode are equivalent to Fig. 6 b In the first rectifying tube 21;When switching tube turns off, first that the antiparallel body diode of switching tube is equivalent in Fig. 6 b is whole Flow tube 21.When the first rectifying tube 21 in Fig. 6 b is the parallel-connection structure of switch and diode, the first rectifying tube 21 in Fig. 6 b Conducting refers to that switch is closed or switch disconnects, and when the switch is closed, the parallel-connection structure of switch and diode is equivalent in Fig. 6 b The first rectifying tube 21;When the switch in Fig. 6 b disconnects, with the first rectification of the diode equivalent of switch in parallel in Fig. 6 a Pipe 21.
When the PFC rectifiers shown in Fig. 6 b are operated under utility mode, for positive pole line capacitance, i.e. capacitance C1 energy storage (exists The positive half period of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Fig. 6 b, When the second rectifying tube 23 in Fig. 6 b is the switching tube of inverse parallel body diode, the shutdown of the second rectifying tube 23 refers to that switching tube closes Disconnected, when the second rectifying tube 23 in Fig. 6 b is the parallel-connection structure of switch and diode, the shutdown of the second rectifying tube 23 refers to switch It disconnects.
When the PFC rectifiers shown in Fig. 6 b are operated under utility mode, for positive pole line capacitance, i.e. capacitance C1 energy storage (exists The positive half period of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Fig. 6 b, When the second rectifying tube 23 in Fig. 6 b is the switching tube of inverse parallel body diode, 23 high frequency chopping of the second rectifying tube refers to switch Pipe high frequency chopping, when the second rectifying tube 23 in Fig. 6 b is the parallel-connection structure of switch and diode, 23 high frequency of the second rectifying tube Copped wave refers to switch high-frequency copped wave.
Further, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention The PFC rectifiers that embodiment provides are as shown in Fig. 7 b, Fig. 8 b, Fig. 9 b;Wherein, the operation principle of the PFC rectifiers shown in Fig. 7 b Identical with the operation principle of the PFC rectifiers shown in Fig. 2 b, details are not described herein;The work of PFC rectifiers shown in Fig. 8 b is former Reason is identical with the operation principle of the PFC rectifiers shown in Fig. 3 b, and details are not described herein;The work of PFC rectifiers shown in Fig. 9 b Principle is identical with the operation principle of the PFC rectifiers shown in Fig. 4 b, and details are not described herein.
Fig. 7 b, Fig. 8 b or the PFC rectifiers shown in Fig. 9 b are operated under battery mode when being positive bus-bar capacitive energy storage, During PFC inductance, i.e. inductance L1 energy storage, switching tube Q2 conductings, the voltage of the anode of DC power supply DC is exported for positive bus-bar Voltage after holding the junction capacity partial pressure of junction capacity and diode D2 of the voltage of BUS+ by diode D3, also, diode D3 Junction capacity it is bigger, the voltage of the anode of DC power supply DC is just closer to the voltage of positive pole line output terminal BUS+.
It is thus preferable to when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, this The PFC rectifiers that inventive embodiments provide further include the first capacitance, i.e. capacitance C5, and the first capacitance is in parallel with the first continued flow tube, this When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 10 b, Figure 11 b, Figure 12 b;Wherein, the PFC rectifications shown in Figure 10 b The operation principle of device is identical with the operation principle of the PFC rectifiers shown in Fig. 2 b, and details are not described herein;PFC shown in Figure 11 b is whole The operation principle for flowing device is identical with the operation principle of the PFC rectifiers shown in Fig. 3 b, and details are not described herein;PFC shown in Figure 12 b The operation principle of rectifier is identical with the operation principle of the PFC rectifiers shown in Fig. 4 b, and details are not described herein.
In Figure 10 b, Figure 11 b and Figure 12 b, due to the both ends of diode D3 capacitance C5 in parallel, this, which is equivalent to, increases The junction capacity of diode D3, therefore, it is positive pole that Figure 10 b, Figure 11 b or the PFC rectifiers shown in Figure 12 b, which are operated under battery mode, During line capacitance energy storage, in PFC inductance, i.e., during inductance L1 energy storage, the voltage of the anode of DC power supply DC is more nearly just The voltage of busbar output terminal BUS+.
Optionally, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention is real The PFC rectifiers for applying example offer further include first switch, that is, switch K3, first switch is in parallel with the first continued flow tube, at this point, this hair The PFC rectifiers that bright embodiment provides are as shown in Figure 13 b, Figure 14 b, Figure 15 b.First in Figure 13 b, Figure 14 b or Figure 15 b opens It closes, that is, switchs K3 and disconnected when PFC rectifiers are operated in utility mode, at this point, the first continued flow tube is equivalent to a diode;Figure First switch in 13b, Figure 14 b or Figure 15 b switchs K3 in the case where PFC rectifiers are operated in battery mode as in PFC rectifiers Negative busbar capacitance, i.e. capacitance C2 energy storage when disconnect, at this point, the first continued flow tube is equivalent to a diode;Figure 13 b, Figure 14 b or First switch in Figure 15 b, that is, it is the positive bus-bar electricity in PFC rectifiers to switch K3 in the case where PFC rectifiers are operated in battery mode Hold, i.e. PFC inductance during capacitance C1 energy storage, is i.e. disconnects or be closed when inductance L1 releases energy, at this point, due to Figure 13 b, PFC rectifiers shown in Figure 14 b or Figure 15 b are operated under battery mode as the positive pole line capacitance in PFC rectifiers, i.e. capacitance C1 PFC inductance during energy storage, i.e., when inductance L1 releases energy, since diode D3 is connected, the anode of DC power supply DC Current potential be equal to positive pole line output terminal BUS+ voltage.First switch in Figure 13 b, Figure 14 b or Figure 15 b switchs K3 in PFC Rectifier is operated under battery mode as the positive pole line capacitance in PFC rectifiers, i.e. PFC inductance during capacitance C1 energy storage, I.e. inductance L1 storage energies when be closed, at this point, the current potential of the anode of DC power supply DC be equal to positive pole line output terminal BUS+ voltage.
Therefore, Figure 13 b, Figure 14 b and the PFC rectifiers shown in Figure 15 b are operated under battery mode, are stored up for positive pole line capacitance During energy, the current potential of the anode of DC power supply DC will not saltus step.
The operation principle of circuit in PFC rectifiers shown in Figure 13 b in addition to K3 is switched and the PFC rectifications shown in Fig. 7 b The operation principle of device is identical, and details are not described herein;The work of circuit in PFC rectifiers shown in Figure 14 b in addition to K3 is switched Principle is identical with the operation principle of the PFC rectifiers shown in Fig. 8 b, and details are not described herein;It is removed in PFC rectifiers shown in Figure 15 b The operation principle for switching the circuit other than K3 is identical with the operation principle of the PFC rectifiers shown in Fig. 9 b, and details are not described herein.
When the switching tube that the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is inverse parallel body diode When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 16 b, Figure 17 b, Figure 18 b.Figure 16 b, Figure 17 b, shown in Figure 18 b Switching tube Q3 and its antiparallel body diode in PFC rectifiers are equivalent to the diode in Figure 13 b, Figure 14 b and Figure 15 b Structure in parallel with switch K3 D3;Wherein, the antiparallel body diode of switching tube Q3 is equivalent to diode D3, switching tube Q3 etc. It imitates in switch K3.The operation principle of PFC rectifiers shown in Figure 16 b and the operation principle phase of the PFC rectifiers shown in Figure 13 b Together, details are not described herein;The operation principle of PFC rectifiers shown in Figure 17 b and the work of the PFC rectifiers shown in Figure 14 b are former Manage identical, details are not described herein;The operation principle of PFC rectifiers shown in Figure 18 b and the work of the PFC rectifiers shown in Figure 15 b It is identical to make principle, details are not described herein.
Optionally, the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention can also be multiphase PFC rectifications Circuit, for example, two-phase PFC rectification circuits, three-phase PFC rectification circuits etc..Also, when PFC rectifications provided in an embodiment of the present invention When PFC rectification circuits in device are n phase PFC rectification circuits, PFC rectifiers provided in an embodiment of the present invention include n first Rectifying tube.In the following, only it is by three-phase PFC rectification circuits of the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention Example illustrates.
When the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention are three-phase PFC rectification circuits and the PFC When the anode of DC power supply is connected with PFC inductance when rectifier is operated under battery mode, PFC provided in an embodiment of the present invention is whole Device is flowed as shown in figure 19a, including PFC rectification circuits;Each first rectifying tube in the PFC rectification circuits is two pole of inverse parallel body The switching tube of pipe, i.e. the first rectifying tube 181A are the switching tube Q6A of inverse parallel body diode, the first rectifying tube 181B is inverse parallel The switching tube Q6B of body diode and the first rectifying tube 181C be inverse parallel body diode switching tube Q6C (shown in Figure 20 a) or Each first rectifying tube in person's PFC rectification circuits is switch and the parallel-connection structure of diode (in Figure 21 a the first rectifying tube 181A is to switch the parallel-connection structure that K5A is diode D6A, and the first rectifying tube 181B is that switch K5B is that diode D6B's and is coupled Structure, the first rectifying tube 181C are to switch the parallel-connection structure that K5C is diode D6C);Wherein, each first rectifying tube is PFC rectifications The rectifying tube being connected in two rectifying tubes when circuit is operated under battery mode in PFC rectification circuits with DC power supply DC;Its In, when under battery mode, DC power supply DC is PFC rectifier power supplies.The direct-to-ground capacitance of the anode of DC power supply DC is capacitance C8, the direct-to-ground capacitance of the cathode of DC power supply DC is capacitance C7.
When PFC rectifiers are operated under battery mode, in Figure 19 a, Figure 20 a or Figure 21 a, the anode of DC power supply DC Connect the PFC inductance in PFC rectifiers, i.e. inductance L2A, inductance L2B, inductance L2C.
In Figure 19 a, Figure 20 a or Figure 21 a, PFC rectifiers provided in an embodiment of the present invention include:Diode D5A and figure (switch K5A in switching tube Q6A, Figure 21 a in Figure 20 a and diode D6A's and are coupled the first rectifying tube 181A in 19a Structure) connecting forms third branch, the first rectifying tube 181B (switching tube Q6B, figure in Figure 20 a in diode D5B and Figure 19 a Switch K5B and the parallel-connection structure of diode D6B in 21a) connecting forms the 4th branch, and first in diode D5C and Figure 19 a Rectifying tube 181C (the switch K5C and the parallel-connection structure of diode D6C in switching tube Q6C, Figure 21 a in Figure 20 a) formation of connecting 5th branch, switching tube Q4 and switching tube Q5 connect to be formed the 6th branch (tie point that switching tube Q4 is connected with switching tube Q5 be M Point), A phase PFC inductance, i.e. inductance L2A one end connection diode D5A and Figure 19 a in the first rectifying tube 181A (in Figure 20 a Switching tube Q6A, Figure 21 a in switch K5A and the parallel-connection structure of diode D6A) tie point that is connected, B phase PFC inductance, i.e. The first rectifying tube 181B (switching tube Q6B, Figure 21 a in Figure 20 a in one end connection diode D5B and Figure 19 a of inductance L2B In switch K5B and the parallel-connection structure of diode D6B) tie point that is connected, one end connection of C phase PFC inductance, i.e. inductance L2C The first rectifying tube 181C (switch K5C in switching tube Q6C, Figure 21 a and two poles in Figure 20 a in diode D5C and Figure 19 a The parallel-connection structure of pipe D6C) connected tie point;One end after third branch, the 4th branch, the 5th branch and the 6th branch circuit parallel connection By diode D7 connection positive pole line capacitances, i.e. one end of capacitance C5, one end that diode D7 is connected with capacitance C5 is three-phase PFC The positive pole line output terminal BUS+ of rectification circuit;The other end after third branch, the 4th branch, the 5th branch and the 6th branch circuit parallel connection One end of negative busbar capacitance, i.e. capacitance C6 is connected by the first continued flow tube 182, the other end connection capacitance C5's of capacitance C6 is another End, one end that the first continued flow tube 182 is connected with capacitance C6 are the negative busbar output terminal BUS- of three-phase PFC rectification circuits;Capacitance C5 It is the voltage on the zero curve N in three-phase alternating-current supply AC with the voltage of the capacitance C6 tie points being connected.
When Figure 19 a, Figure 20 a or the PFC rectifiers shown in Figure 21 a are operated under battery mode, A phase PFC inductance, i.e. inductance L2A is connected by switching the anode of K3A and DC power supply DC, and B phase PFC inductance, i.e. inductance L2B is by switching K3B and direct current The anode of source DC is connected, C phase PFC inductance, i.e. inductance L2C is connected by switching the anode of K3C and DC power supply DC, and switch K4 is closed It closes.When the PFC rectifiers shown in Figure 19 a, Figure 20 a or Figure 21 a are positive pole line capacitance, i.e. capacitance C5 energy storage, Figure 19 a, Figure 20 a Or there are three types of working methods for the PFC rectifiers shown in Figure 21 a.
The first working method is:When it is positive pole line capacitance, i.e. capacitance C5 energy storage that PFC rectifiers are by inductance L2A, figure The first rectifying tube 181A high frequency choppings (the switching tube Q6A high frequency choppings in Figure 20 a, the switch K5A high frequencies in Figure 21 a in 19a Copped wave), switching tube Q4 shutdowns, switching tube Q5 conductings;When the first rectifying tube 181A conducting (in Figure 20 a switching tube Q6A conducting, Switch K5A in Figure 21 a is closed) when, electric current passes through the anode, PFC inductance (i.e. inductance L2A), the first rectification of DC power supply DC Pipe 181A (the switch K5A in switching tube Q6A, Figure 21 a in Figure 20 a) reaches the cathode of DC power supply DC, forms energy storage and returns Road, inductance L2A energy storage;When the first rectifying tube 181A shutdowns, (the switching tube Q6A in Figure 20 a is turned off, and the switch K5A in Figure 21 a breaks Open) when, electric current passes through anode, inductance L2A, diode D5A, diode D7, capacitance C5, the switching tube Q5 of DC power supply DC, arrives Up to the cathode of DC power supply DC, continuous current circuit is formed, inductance L2A releases energy, capacitance C5 energy storage;That is, when PFC rectifications Device by inductance L2A be capacitance C5 energy storage when, DC power supply DC, inductance L2A, the first rectifying tube 181A (switching tubes in Figure 19 a Switch K5A in Q6A, Figure 20 a), diode D5A, diode D7, capacitance C5, switching tube Q5 composition boost circuits.When PFC is whole When to flow device by inductance L2B be positive pole line capacitance, i.e. capacitance C5 energy storage, the first rectifying tube 181B high frequency choppings (figure in Figure 19 a Switching tube Q6B high frequency choppings in 20a, the switch K5B high frequency choppings in Figure 21 a), switching tube Q4 shutdowns, switching tube Q5 conductings; When the first rectifying tube 181B conductings (the switching tube Q6B in Figure 20 a is connected, and the switch K5B in Figure 21 a is closed), electric current passes through The anode of DC power supply DC, PFC inductance (i.e. inductance L2B), the first rectifying tube 181B are (in switching tube Q6B, Figure 21 a in Figure 20 a Switch K5B), reach the cathode of DC power supply DC, form tank circuit, inductance L2B energy storage;When the first rectifying tube 181B is turned off When (the switching tube Q6B in Figure 20 a is turned off, and the switch K5B in Figure 21 a is disconnected), electric current passes through anode, the inductance of DC power supply DC L2B, diode D5B, diode D7, capacitance C5, switching tube Q5 reach the cathode of DC power supply DC, form continuous current circuit, inductance L2B releases energy, capacitance C5 energy storage;That is, when PFC rectifiers are capacitance C5 energy storage by inductance L2B, DC power supply DC, inductance L2B, the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 a in Figure 20 a), diode D5B, two poles Pipe D7, capacitance C5, switching tube Q5 composition boost circuits.When PFC rectifiers by inductance L2C be positive pole line capacitance, i.e. capacitance C5 During energy storage, the first rectifying tube 181C high frequency choppings in Figure 19 a (the switching tube Q6C high frequency choppings in Figure 20 a, opening in Figure 21 a Close K5C high frequency choppings), switching tube Q4 shutdowns, switching tube Q5 conductings;When (the switching tube in Figure 20 a is connected in the first rectifying tube 181C Q6C is connected, and the switch K5C in Figure 21 a is closed) when, electric current by the anode of DC power supply DC, PFC inductance (i.e. inductance L2C), First rectifying tube 181C (the switch K5C in switching tube Q6C, Figure 21 a in Figure 20 a) reaches the cathode of DC power supply DC, forms Tank circuit, inductance L2C energy storage;When the first rectifying tube 181C shutdowns, (the switching tube Q6C in Figure 20 a is turned off, opening in Figure 21 a K5C is closed to disconnect) when, electric current is by the anode of DC power supply DC, inductance L2C, diode D5C, diode D7, capacitance C5, switch Pipe Q5 reaches the cathode of DC power supply DC, forms continuous current circuit, and inductance L2C releases energy, capacitance C5 energy storage;That is, work as PFC rectifiers by inductance L2C be capacitance C5 energy storage when, DC power supply DC, inductance L2C, the first rectifying tube 181C are (in Figure 20 a Switching tube Q6C, Figure 21 a in switch K5C), diode D5C, diode D7, capacitance C5, switching tube Q5 composition boost electricity Road.Since switching tube Q5 is connected, the current potential of the cathode of DC power supply DC is clamped the electricity on the zero curve for AC power AC Position.
Second of working method be:When it is positive pole line capacitance, i.e. capacitance C5 energy storage that PFC rectifiers are by inductance L2A, figure The first rectifying tube 181A shutdowns (the switching tube Q6A in Figure 20 a is turned off, and the switch K5A in Figure 21 a is disconnected) in 19a, switching tube Q4 high frequency choppings, switching tube Q5 conductings;When switching tube Q4 is connected, electric current is by the anode of DC power supply DC, inductance L2A, two Pole pipe D5A, switching tube Q4, switching tube Q5 reach the cathode of DC power supply DC, form tank circuit, inductance L2A energy storage;When opening When closing pipe Q4 shutdowns, electric current is by the anode of DC power supply DC, inductance L2A, diode D5A, diode D7, capacitance C5, switch Pipe Q5 reaches the cathode of DC power supply DC, forms continuous current circuit, and inductance L2A releases energy, capacitance C5 energy storage;That is, work as PFC rectifiers by inductance L2A be positive pole line capacitance, i.e. capacitance C5 energy storage when, DC power supply DC, inductance L2A, diode D5A, Switching tube Q4, diode D7, capacitance C5, switching tube Q5 composition boost circuits.When PFC rectifiers by inductance L2B be positive bus-bar During capacitance, i.e. capacitance C5 energy storage, DC power supply DC, inductance L2B, diode D5B, switching tube Q4, diode D7, capacitance C5, open Close pipe Q5 composition boost circuits.When it is positive pole line capacitance, i.e. capacitance C5 energy storage that PFC rectifiers are by inductance L2C, direct current Source DC, inductance L2C, diode D5C, switching tube Q4, diode D7, capacitance C5, switching tube Q5 composition boost circuits.Due to opening Pipe Q5 conductings are closed, therefore, the current potential of the cathode of DC power supply DC is clamped the current potential on the zero curve for AC power AC.
The third working method is:When it is positive pole line capacitance, i.e. capacitance C5 energy storage that PFC rectifiers are by inductance L2A, figure The first rectifying tube 181A high frequency choppings (the switching tube Q6A high frequency choppings in Figure 20 a, the switch K5A high frequencies in Figure 21 a in 19a Copped wave), switching tube Q4 high frequency choppings, switching tube Q5 conductings, and the first rectifying tube 181A (switching tube Q6A high frequencies in Figure 20 a Copped wave, the switch K5A high frequency choppings in Figure 21 a) and switching tube Q4 alternating choppers;When PFC rectifiers are capacitance C5 energy storage, directly Galvanic electricity source DC, inductance L2A, the first rectifying tube 181A (the switch K5A in switching tube Q6A, Figure 21 a in Figure 20 a), diode D5A, diode D7, capacitance C5, switching tube Q5 form the first boost circuits;DC power supply DC, it inductance L2A, diode D5A, opens It closes pipe Q4, diode D7, capacitance C5, switching tube Q5 and forms the 2nd boost circuits.When PFC rectifiers by inductance L2B be positive pole During line capacitance, i.e. capacitance C5 energy storage, the first rectifying tube 181B high frequency choppings (switching tube Q6B high frequencies in Figure 20 a in Figure 19 a Copped wave, the switch K5B high frequency choppings in Figure 21 a), switching tube Q4 high frequency choppings, switching tube Q5 conductings, and the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 a in Figure 20 a) and switching tube Q4 alternating choppers;When PFC rectifiers are capacitance During C5 energy storage, DC power supply DC, inductance L2B, the first rectifying tube 181B (switches in switching tube Q6B, Figure 21 a in Figure 20 a K5B), diode D5B, diode D7, capacitance C5, switching tube Q5 form the 3rd boost circuits, DC power supply DC, inductance L2B, Diode D5B, switching tube Q4, diode D7, capacitance C5, switching tube Q5 form the 4th boost circuits.When PFC rectifiers pass through When inductance L2C is positive pole line capacitance, i.e. capacitance C5 energy storage, the first rectifying tube 181C high frequency choppings in Figure 19 a are (in Figure 20 a Switching tube Q6C high frequency choppings, the switch K5C high frequency choppings in Figure 21 a), switching tube Q4 high frequency choppings, switching tube Q5 conductings, and And first rectifying tube 181C (the switch K5C in switching tube Q6B, Figure 21 a in Figure 20 a) and switching tube Q4 alternating choppers;Work as PFC When rectifier is capacitance C5 energy storage, DC power supply DC, inductance L2C, the first rectifying tube 181C (the switching tube Q6C in Figure 20 a, figure Switch K5C in 21a), diode D5C, diode D7, capacitance C5, switching tube Q5 form the 5th boost circuits, DC power supply DC, inductance L2C, diode D5C, switching tube Q4, diode D7, capacitance C5, switching tube Q5 form the 6th boost circuits.And Since switching tube Q5 is connected, the current potential of the cathode of DC power supply DC is clamped the current potential on the zero curve for AC power AC.
Similarly, in the case that the ripple of the electric current on PFC inductance is identical, shown in Figure 19 a, Figure 20 a or Figure 21 a When PFC rectifiers use the third mode of operation, using the first mode of operation and it is somebody's turn to do compared to the PFC rectifiers PFC rectifiers are used for second of mode of operation, switching frequency are reduced, so as to reduce switching loss.
Also, energy storage during the first working method is used due to the PFC rectifiers shown in Figure 19 a, Figure 20 a or Figure 21 a Circuit is less than the tank circuit when PFC rectifiers use second of working method, and circuit is smaller, and conduction loss is also got over Small, the efficiency of PFC rectifiers is also higher, therefore, the efficiency of PFC rectifiers can be improved using the first working method.
It is negative busbar when the PFC rectifiers that Figure 19 a, Figure 20 a or Figure 21 a show are operated under battery mode through inductance L2A During capacitance, i.e. capacitance C6 energy storage, the first rectifying tube 181A high frequency choppings in the PFC rectifiers shown in Figure 19 a are (shown in Figure 20 a PFC rectifiers in switching tube Q6A high frequency choppings, the switch K5A high frequency choppings in Figure 21 a), switching tube Q4 conducting, switch Pipe Q5 is turned off;When the first rectifying tube 181A conductings (switch in switching tube Q6A conductings, Figure 21 a in Figure 20 a in Figure 19 a K5A is closed) when, electric current is by the anode, PFC inductance (i.e. inductance L2A), the first rectifying tube 181A of DC power supply DC (in Figure 20 a Switching tube Q6A, Figure 21 a in switch K5A), reach the cathode of DC power supply DC, form tank circuit, inductance L2A energy storage; At this point, the voltage that the voltage of DC power supply DC cathode is negative busbar output terminal BUS- passes through diode D5A and the first continued flow tube 182 Voltage after partial pressure, the voltage are less than the voltage of negative busbar output terminal BUS-.When the first rectifying tube 181A shutdowns in Figure 19 a When (the switch K5A in switching tube Q6A shutdowns, Figure 21 a in Figure 20 a is disconnected), electric current passes through anode, the inductance of DC power supply DC L2A, diode D5A, switching tube Q4, capacitance C6, the first continued flow tube 182 reach the cathode of DC power supply DC, form afterflow and return Road, inductance L2A release energy, capacitance C6 energy storage;At this point, since the first continued flow tube 182 is connected, DC power supply DC is just The current potential of pole is clamped the current potential for negative busbar output terminal BUS-;That is, it is capacitance to work as PFC rectifiers by inductance L2A During C6 energy storage, the first rectifying tube 181A (switching tube Q6A, Figure 21 a in Figure 20 a in DC power supply DC, inductance L2A, Figure 19 a In switch K5A), diode D5A, switching tube Q4, capacitance C6, the first continued flow tube 182 composition boost circuits.When Figure 19 a, figure The PFC rectifiers that 20a or Figure 21 a show be operated under battery mode by inductance L2B be negative busbar capacitance, i.e. capacitance C6 energy storage When, the first rectifying tube 181B (opening in switching tube Q6B, Figure 21 a in Figure 20 a in DC power supply DC, inductance L2B, Figure 19 a Close K5B), diode D5B, switching tube Q4, capacitance C6, the first continued flow tube 182 composition boost circuits;And in the boost circuits In, during inductance L2B energy storage, the voltage that the voltage of DC power supply DC cathode is negative busbar output terminal BUS- passes through two poles Pipe D5B and the first continued flow tube 182 partial pressure after voltage, the voltage be less than negative busbar output terminal BUS- voltage;In boost electricity Lu Zhong, during inductance L2B releases energy, since the first continued flow tube 182 is connected, the cathode of DC power supply DC Current potential is clamped the current potential on the zero curve for AC power AC.When the PFC rectifiers that Figure 19 a, Figure 20 a or Figure 21 a show are operated in When by inductance L2C being negative busbar capacitance, i.e. capacitance C6 energy storage under battery mode, in DC power supply DC, inductance L2C, Figure 19 a First rectifying tube 181C (the switch K5C in switching tube Q6C, Figure 21 a in Figure 20 a), diode D5C, switching tube Q4, capacitance C6, the first continued flow tube 182 composition boost circuits;And in the boost circuits, during inductance L2C energy storage, direct current The voltage that the voltage of power supply DC cathode is negative busbar output terminal BUS- is after diode D5C and the first continued flow tube 182 partial pressure Voltage, the voltage are less than the voltage of negative busbar output terminal BUS-;In the boost circuits, in the process that inductance L2C releases energy In, since the first continued flow tube 182 is connected, the current potential of the cathode of DC power supply DC is clamped the zero curve for AC power AC On current potential.Therefore, Figure 19 a, Figure 20 a and the PFC rectifiers shown in Figure 21 a are operated under battery mode, are the first busbar electricity Hold, i.e. negative busbar capacitive energy storage when, (i.e. the cathode of DC power supply) for the electrode being connected with the first rectifying tube in DC power supply is electric The amplitude of the saltus step of position, is operated in less than PFC rectification circuits of the prior art under battery mode, is negative busbar capacitive energy storage When, the amplitude of the saltus step of the current potential of the cathode of DC power supply.
When Figure 19 a, Figure 20 a or the PFC rectifiers shown in Figure 21 a are operated under utility mode, inductance L2A passes through switch The firewire L_A of the A phases of K3A and AC power AC is connected, and inductance L2B is by switching the firewire L_ of the B phases of K3B and AC power AC B is connected, and inductance L2C is connected by switching the firewire L_C of the C phases of K3C and AC power AC, and switch K4 is disconnected.When Figure 19 a, figure When PFC rectifiers shown in 20a or Figure 21 a are operated under utility mode as positive pole line capacitance, i.e. capacitance C5 energy storage, Figure 19 a, figure There are three types of working methods for PFC rectifiers shown in 20a or Figure 21 a.
In the first working method, the first rectifying tube 181A, the first rectifying tube 181B and the first rectifying tube in Figure 19 a 181C disconnects that (switching tube Q6A, switching tube Q6B and switching tube Q6C in Figure 20 a are turned off, and switch K5A in Figure 21 a, are opened Close K5B and switch K5C disconnect), switching tube Q4 high frequency choppings;Therefore, the alternating voltage exported in the A phases of AC power AC Positive half period, AC power AC, inductance L2A, diode D5A, switching tube Q4, diode D7, capacitance C5 form boost circuits; In the positive half period of alternating voltage that the B phases of AC power AC export, AC power AC, inductance L2B, diode D5B, switching tube Q4, diode D7, capacitance C5 form boost circuits;In the positive half period of alternating voltage that the C phases of AC power AC export, hand over Galvanic electricity source AC, inductance L2C, diode D5C, switching tube Q4, diode D7, capacitance C5 form boost circuits.
In second of working method, the first rectifying tube 181A, the first rectifying tube 181B and the first rectifying tube in Figure 19 a The equal high frequency choppings of 181C (opening in the switching tube Q6A, switching tube Q6B and the equal high frequency choppings of switching tube Q6C, Figure 21 a in Figure 20 a Close K5A, switch K5B and switch K5C equal high frequency choppings), switching tube Q4 shutdowns;Therefore, the friendship exported in the A phases of AC power AC The positive half period of galvanic electricity pressure, the first rectifying tube 181A (switching tubes in Figure 20 a in AC power AC, inductance L2A, Figure 19 a Switch K5A in Q6A, Figure 21 a), the antiparallel body diode of switching tube Q5, diode D5A, diode D7, capacitance C5 structures Into boost circuits;In the positive half period of alternating voltage that the B phases of AC power AC export, AC power AC, inductance L2B, figure The first rectifying tube 181B's (the switch K5B in switching tube Q6B, Figure 21 a in Figure 20 a), switching tube Q5 in 19a is antiparallel Body diode, diode D5B, diode D7, capacitance C5 form boost circuits;In the alternating current that the C phases of AC power AC export The positive half period of pressure, the first rectifying tube 181C (switching tube Q6C, figure in Figure 20 a in AC power AC, inductance L2C, Figure 19 a Switch K5C in 21a), the antiparallel body diode of switching tube Q5, diode D5C, diode D7, capacitance C5 form boost Circuit.
In the third working method, the first rectifying tube 181A, the first rectifying tube 181B and the first rectifying tube in Figure 19 a The equal high frequency choppings of 181C (opening in the switching tube Q6A, switching tube Q6B and the equal high frequency choppings of switching tube Q6C, Figure 21 a in Figure 20 a Close K5A, switch K5B and switch K5C equal high frequency choppings), switching tube Q4 high frequency choppings, and the first rectifying tube 181A in Figure 19 a, First rectifying tube 181B and the first rectifying tube 181C (switching tube Q6A, switching tube Q6B and switching tube Q6C, Figure 21 a in Figure 20 a In switch K5A, switch K5B and switch K5C) with switching tube Q4 alternating choppers;Therefore, it is exported in the A phases of AC power AC Alternating voltage positive half period, the first rectifying tube 181A (switches in Figure 20 a in AC power AC, inductance L2A, Figure 19 a Switch K5A in pipe Q6A, Figure 21 a), the antiparallel body diodes of switching tube Q5, diode D5A, diode D7, capacitance C5 structures Into a boost circuit;AC power AC, inductance L2A, diode D5A, switching tube Q4, diode D7, capacitance C5 form another A boost circuits.In the positive half period of alternating voltage that the B phases of AC power AC export, AC power AC, inductance L2B, figure The first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 a in Figure 20 a), the antiparallel bodies of switching tube Q5 in 19a Diode, diode D5B, diode D7, capacitance C5 form a boost circuit;AC power AC, inductance L2B, diode D5B, switching tube Q4, diode D7, capacitance C5 form another boost circuit.In the alternating current that the C phases of AC power AC export The positive half period of pressure, the first rectifying tube 181C (switching tube Q6C, figure in Figure 20 a in AC power AC, inductance L2C, Figure 19 a Switch K5C in 21a), the antiparallel body diodes of switching tube Q5, diode D5C, diode D7, capacitance C5 form one Boost circuits;AC power AC, inductance L2C, diode D5C, switching tube Q4, diode D7, capacitance C5 form another Boost circuits.
When PFC rectifiers provided in an embodiment of the present invention are operated in the positive half cycle of the alternating voltage of AC power AC outputs Phase, in the case that ripple on PFC inductance, that is, inductance L2A, inductance L2B, inductance L2C is identical, using the third working method When PFC rectifiers in switch or switching tube switching frequency it is minimum, therefore, using PFC rectifiers during the third working method Switching loss it is minimum.
It is negative busbar capacitance when the PFC rectifiers shown in Figure 19 a are operated under utility mode, i.e. capacitance C6 energy storage exists The negative half-cycle of the alternating voltage of AC power AC outputs, the first rectifying tube 181A, the first rectifying tube 181B in Figure 19 a and the One rectifying tube 181C is both turned on, switching tube Q5 high frequency choppings;Therefore, the alternating voltage exported in the A phases of AC power AC is born Half period, AC power AC, switching tube Q5, capacitance C6, the first continued flow tube 182, the first rectifying tube 181A, inductance L2A are formed Boost circuits;In the negative half-cycle of alternating voltage that the B phases of AC power AC export, AC power AC, switching tube Q5, capacitance The first rectifying tube 181B, inductance L2B in C6, the first continued flow tube 182, Figure 18 form boost circuits;In the C of AC power AC The mutually negative half-cycle of the alternating voltage of output, in AC power AC, switching tube Q5, capacitance C6, the first continued flow tube 182, Figure 18 First rectifying tube 181C, inductance L2C form boost circuits.
It is negative busbar capacitance that PFC rectifiers shown in Figure 20 a, which are operated under utility mode, i.e. capacitance C6 energy storage is being handed over During the negative half-cycle of the alternating voltage of galvanic electricity source AC outputs, working method and the PFC rectifications shown in Figure 19 a of the PFC rectifiers The working method of device is identical, differs only in:The first rectifying tube 181A conductings in Figure 19 a refer to the switching tube in Figure 20 a Q6A is connected or switching tube Q6A shutdowns, when the switching tube Q6A conductings in Figure 20 a, switching tube Q6A and its antiparallel body two Pole pipe is equivalent to the first rectifying tube 181A in Figure 19 a;When in Figure 20 a switching tube Q6A shutdown when, switching tube Q6A it is anti-simultaneously The body diode of connection is equivalent to the first rectifying tube 181A in Figure 19 a;The first rectifying tube 181B conductings in Figure 19 a refer to figure In 20a switching tube Q6B conducting or switching tube Q6B shutdown, when in Figure 20 a switching tube Q6B conducting when, switching tube Q6B and Its antiparallel body diode is equivalent to the first rectifying tube 181B in Figure 19 a;When the switching tube Q6B shutdowns in Figure 20 a, open The antiparallel body diode of pass pipe Q6B is equivalent to the first rectifying tube 181B in Figure 19 a;The first rectifying tube in Figure 19 a 181C conductings refer to switching tube Q6C conductings or switching tube Q6C shutdowns in Figure 20 a, when the switching tube Q6C conductings in Figure 20 a When, switching tube Q6C and its antiparallel body diode are equivalent to the first rectifying tube 181C in Figure 19 a;Switch in Figure 20 a When pipe Q6C is turned off, the antiparallel body diode of switching tube Q6C is equivalent to the first rectifying tube 181C in Figure 19 a.
It is negative busbar capacitance that PFC rectifiers shown in Figure 21 a, which are operated under utility mode, i.e. capacitance C6 energy storage is being handed over During the negative half-cycle of the alternating voltage of galvanic electricity source AC outputs, working method and the PFC rectifications shown in Figure 19 a of the PFC rectifiers The working method of device is identical, differs only in:The first rectifying tube 181A conductings in Figure 19 a refer to the switch K5A in Figure 21 a It is closed or switch K5A is disconnected, when the switch K5A in Figure 21 a is closed, the parallel-connection structure for switching K5A and diode D6A is equivalent The first rectifying tube 181A in Figure 19 a;When the switch K5A in Figure 21 a is disconnected, diode D6A in parallel with switch K5A etc. Imitate the first rectifying tube 181A in Figure 19 a;The first rectifying tube 181B conductings in Figure 19 a refer to that the switch K5B in Figure 21 a is closed It closes or switch K5B is disconnected, when the switch K5B in Figure 21 a is closed, the parallel-connection structure of switch K5B and diode D6B are equivalent to The first rectifying tube 181B in Figure 19 a;When the switch K5B in Figure 21 a is disconnected, the diode D6B in parallel with switch K5B is equivalent The first rectifying tube 181B in Figure 19 a;The first rectifying tube 181C conductings in Figure 19 a refer to that the switch K5C in Figure 21 a is closed Or switch K5C is disconnected, when the switch K5C in Figure 21 a is closed, the parallel-connection structure of switch K5C and diode D6C is equivalent to figure The first rectifying tube 181C in 19a;When the switch K5C in Figure 21 a is disconnected, the diode D6C in parallel with switch K5C is equivalent to The first rectifying tube 181C in Figure 19 a.
Preferably, the diode D5A in PFC rectifiers shown in Figure 19 a can also replace with inverse parallel body diode Switching tube or the parallel-connection structure for replacing with switch and diode, the diode D5B in PFC rectifiers shown in Figure 19 a also may be used With the parallel-connection structure for replacing with the switching tube of inverse parallel body diode or replacing with switch and diode, shown in Figure 19 a Diode D5C in PFC rectifiers can also replace with the switching tube of inverse parallel body diode or replace with switch and two poles The parallel-connection structure of pipe, the structure of the PFC rectifiers after replacement shown in Figure 19 a as shown in Figure 22 a, in Figure 22 a, the second rectifying tube 183A, the second rectifying tube 183B, the second rectifying tube 183C both can be the switching tube of inverse parallel body diode, or open Close the parallel-connection structure with diode.PFC rectifiers shown in Figure 22 a are operated under utility mode as negative busbar capacitance, i.e. capacitance During C6 energy storage, there are three types of working methods for PFC rectifiers.
In the first working method, in the negative half-cycle of the A phase alternating voltages of AC power AC outputs, Figure 22 a First rectifying tube 181A conductings, switching tube Q5 high frequency choppings, the second rectifying tube 183A shutdown;AC power AC, switching tube Q5, electricity Hold C6, the first continued flow tube 182, the first rectifying tube 181A, inductance L2A and form boost circuits;In the B phases of AC power AC outputs The negative half-cycle of alternating voltage, the first rectifying tube 181B conductings, switching tube Q5 high frequency choppings, the second rectifying tube in Figure 22 a 183B is turned off;AC power AC, switching tube Q5, capacitance C6, the first continued flow tube 182, the first rectifying tube 181B, inductance L2B are formed Boost circuits;The first rectifying tube 181C in the negative half-cycle of the C phase alternating voltages of AC power AC outputs, Figure 22 a is led Logical, switching tube Q5 high frequency choppings, the second rectifying tube 183C shutdown;AC power AC, switching tube Q5, capacitance C6, the first continued flow tube 182nd, the first rectifying tube 181C, inductance L2C form boost circuits.
In second of working method, in the negative half-cycle of the A phase alternating voltages of AC power AC outputs, Figure 22 a First rectifying tube 181A conductings, switching tube Q5 shutdowns, the second rectifying tube 183A high frequency choppings;AC power AC, switching tube Q4 Antiparallel body diode, the second rectifying tube 183A, inductance L2A, capacitance C6, the first continued flow tube 182, the first rectifying tube 181A structures Into boost circuits;The first rectifying tube 181B in the negative half-cycle of the B phase alternating voltages of AC power AC outputs, Figure 22 a is led Logical, switching tube Q5 shutdowns, the second rectifying tube 183B high frequency choppings;AC power AC, switching tube Q4 antiparallel body diode, Second rectifying tube 183B, inductance L2B, capacitance C6, the first continued flow tube 182, the first rectifying tube 181B form boost circuits;It is handing over The negative half-cycle of the C phase alternating voltages of galvanic electricity source AC outputs, the first rectifying tube 181C conductings, switching tube Q5 shutdowns in Figure 22 a, Second rectifying tube 183C high frequency choppings;AC power AC, the antiparallel body diode of switching tube Q4, the second rectifying tube 183C, Inductance L2C, capacitance C6, the first continued flow tube 182, the first rectifying tube 181C form boost circuits.
In the third working method, in the negative half-cycle of the A phase alternating voltages of AC power AC outputs, Figure 22 a First rectifying tube 181A conductings, switching tube Q5 high frequency choppings, the second rectifying tube 183A high frequency choppings, and switching tube Q5 and second is whole Flow tube 183A alternating choppers;AC power AC, switching tube Q5, capacitance C6, the first continued flow tube 182, the first rectifying tube 181A, inductance L2A forms a boost circuit;AC power AC, the antiparallel body diode of switching tube Q4, the second rectifying tube 183A, electricity Sense L2A, capacitance C6, the first continued flow tube 182, the first rectifying tube 181A form another boost circuit;It is exported in AC power AC B phase alternating voltages negative half-cycle, the first rectifying tube 181B conductings, switching tube Q5 high frequency choppings, the second rectification in Figure 22 a Pipe 183B high frequency choppings, and switching tube Q5 and the second rectifying tube 183B alternating choppers;AC power AC, switching tube Q5, capacitance C6, First continued flow tube 182, the first rectifying tube 181B, inductance L2B form boost circuits;The inverse parallel of AC power AC, switching tube Q4 Body diode, the second rectifying tube 183B, inductance L2B, capacitance C6, the first continued flow tube 182, the first rectifying tube 181B form Boost circuits;The first rectifying tube 181C in the negative half-cycle of the C phase alternating voltages of AC power AC outputs, Figure 22 a is led Logical, switching tube Q5 high frequency choppings, the second rectifying tube 183C high frequency choppings, and switching tube Q5 and the second rectifying tube 183C is alternately cut Wave;AC power AC, switching tube Q5, capacitance C6, the first continued flow tube 182, the first rectifying tube 181C, inductance L2C form boost electricity Road;AC power AC, the antiparallel body diode of switching tube Q4, the second rectifying tube 183C, inductance L2C, capacitance C6, first continue Flow tube 182, the first rectifying tube 181C form boost circuits.
When the PFC rectifiers shown in Figure 22 a are operated under utility mode, for negative busbar capacitance, i.e. capacitance C6 energy storage (exists The negative half-cycle of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Figure 22 a, When the first rectifying tube 181A in Figure 22 a is the switching tube of inverse parallel body diode, the first rectifying tube 181A in Figure 22 a is led Logical to refer to switching tube conducting or switching tube shutdown, when switching tube is connected, switching tube and its antiparallel body diode are equivalent The first rectifying tube 181A in Figure 22 a;When switching tube turns off, the antiparallel body diode of switching tube is equivalent to Figure 22 a In the first rectifying tube 181A.When the first rectifying tube 181A in Figure 22 a is the parallel-connection structure of switch and diode, Figure 22 a In the first rectifying tube 181A conducting refer to switch be closed or switch disconnect, when the switch is closed, switch with diode and It is coupled the first rectifying tube 181A that structure is equivalent in Figure 22 a;When the switch in Figure 22 a disconnects, the diode with switch in parallel The first rectifying tube 181A being equivalent in Figure 22 a.In situation and Figure 22 a when the first rectifying tube 181B in Figure 22 a is connected Situation when first rectifying tube 181B is connected is identical, and details are not described herein.Feelings when the first rectifying tube 181C in Figure 22 a is connected Situation when condition is connected with the first rectifying tube 181C in Figure 22 a is identical, and details are not described herein.
When the PFC rectifiers shown in Figure 22 a are operated under utility mode, for negative busbar capacitance, i.e. capacitance C6 energy storage (exists The negative half-cycle of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Figure 22 a, When the second rectifying tube 183A in Figure 22 a is the switching tube of inverse parallel body diode, the second rectifying tube 183A shutdowns refer to out Pipe shutdown is closed, when the second rectifying tube 183A in Figure 22 a is the parallel-connection structure of switch and diode, the second rectifying tube 183A is closed It is disconnected to refer to that switch disconnects.Situation when the second rectifying tube 183B in Figure 22 a is turned off is closed with the second rectifying tube 183B in Figure 22 a Situation when disconnected is identical, and details are not described herein.The in situation and Figure 22 a during the second rectifying tube 183C shutdowns in Figure 22 a Situation when two rectifying tube 183C are turned off is identical, and details are not described herein.
When the PFC rectifiers shown in Figure 22 a are operated under utility mode, for negative busbar capacitance, i.e. capacitance C6 energy storage (exists The negative half-cycle of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Figure 22 a, When the second rectifying tube 183A in Figure 22 a is the switching tube of inverse parallel body diode, the second rectifying tube 183A high frequency choppings are Refer to switching tube high frequency chopping, when the second rectifying tube 183A in Figure 22 a is the parallel-connection structure of switch and diode, the second rectification Pipe 183A high frequency choppings refer to switch high-frequency copped wave.Situation and Figure 22 a during the second rectifying tube 183B high frequency choppings in Figure 22 a In the second rectifying tube 183B high frequency choppings when situation it is identical, details are not described herein.The second rectifying tube 183C high in Figure 22 a Situation during frequency copped wave is identical with situation during the second rectifying tube 183C high frequency choppings in Figure 22 a, and details are not described herein.
Further, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention The PFC rectifiers that embodiment provides are as shown in Figure 23 a, Figure 24 a, Figure 25 a;Wherein, the work of the PFC rectifiers shown in Figure 23 a Principle is identical with the operation principle of the PFC rectifiers shown in Figure 19 a, and details are not described herein;PFC rectifiers shown in Figure 24 a Operation principle is identical with the operation principle of the PFC rectifiers shown in Figure 20 a, and details are not described herein;PFC rectifications shown in Figure 25 a The operation principle of device is identical with the operation principle of the PFC rectifiers shown in Figure 21 a, and details are not described herein.
Figure 23 a, Figure 24 a or the PFC rectifiers shown in Figure 25 a are operated under battery mode when being negative busbar capacitive energy storage, During PFC inductance (inductance L2A, inductance L2B or inductance L2C) energy storage, since switching tube Q5 is connected, DC power supply DC's The voltage of cathode is that the voltage of negative busbar output terminal BUS- passes through the junction capacity of diode D5A (diode D5B or diode D5C) Voltage after being divided with the junction capacity of diode D8, also, the junction capacity of diode D8 is bigger, the electricity of the cathode of DC power supply DC Pressure is just closer to the voltage of negative busbar output terminal BUS-.
It is thus preferable to when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, this The PFC rectifiers that inventive embodiments provide further include the first capacitance, i.e. capacitance C9, and the first capacitance is in parallel with the first continued flow tube, this When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 26 a, Figure 27 a, Figure 28 a;Wherein, the PFC rectifications shown in Figure 26 a The operation principle of device is identical with the operation principle of the PFC rectifiers shown in Figure 19 a, and details are not described herein;PFC shown in Figure 27 a The operation principle of rectifier is identical with the operation principle of the PFC rectifiers shown in Figure 20 a, and details are not described herein;Shown in Figure 28 a The operation principle of PFC rectifiers is identical with the operation principle of the PFC rectifiers shown in Figure 21 a, and details are not described herein.
In Figure 26 a, Figure 27 a and Figure 28 a, due to the both ends of diode D8 capacitance C9 in parallel, this, which is equivalent to, increases The junction capacity of diode D8, therefore, it is negative mother that Figure 26 a, Figure 27 a or the PFC rectifiers shown in Figure 28 a, which are operated under battery mode, During line capacitance energy storage, during PFC inductive energy storages, the voltage of the cathode of DC power supply DC is more nearly negative busbar output terminal The voltage of BUS-.
Optionally, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention is real The PFC rectifiers for applying example offer further include first switch, that is, K6 are switched, at this point, PFC rectifiers provided in an embodiment of the present invention are such as Figure 29 a, Figure 30 a, shown in Figure 31 a.First switch in Figure 29 a, Figure 30 a or Figure 31 a switchs K6 and works in PFC rectifiers It is disconnected in utility mode, at this point, the first continued flow tube is equivalent to a diode;First in Figure 29 a, Figure 30 a or Figure 31 a opens It closes, that is, it is the positive pole line capacitance in PFC rectifiers, i.e. capacitance C5 energy storage to switch K6 in the case where PFC rectifiers are operated in battery mode When disconnect, at this point, the first continued flow tube is equivalent to a diode;First switch in Figure 29 a, Figure 30 a or Figure 31 a, that is, switch K6 is the negative busbar capacitance in PFC rectifiers in the case where PFC rectifiers are operated in battery mode, i.e., during capacitance C6 energy storage, It can disconnect and can also be closed when PFC inductance (inductance L2A, inductance L2B or inductance L2C) releases energy, at this point, as switch K6 During disconnection, the first continued flow tube is equivalent to a diode, and when switching K6 closures, the first continued flow tube is equivalent to a section lead.Figure First switch in 29a, Figure 30 a or Figure 31 a switchs K6 in the case where PFC rectifiers are operated in battery mode as in PFC rectifiers Negative busbar capacitance, i.e., during capacitance C6 energy storage during PFC inductance (inductance L2A, inductance L2B or inductance L2C) storage energy It is closed, at this point, the current potential of the cathode of DC power supply DC is equal to the voltage of negative busbar output terminal BUS-;And Figure 29 a, Figure 30 a or figure PFC rectifiers shown in 31a are operated in the mistake for negative busbar capacitance, i.e. capacitance C6 energy storage in PFC rectifiers under battery mode Cheng Zhong, when PFC inductance (inductance L2A, inductance L2B or inductance L2C) releases energy, the current potential of the cathode of DC power supply DC is equal to The voltage of negative busbar output terminal BUS-.
Therefore, Figure 29 a, Figure 30 a and the PFC rectifiers shown in Figure 31 a are operated under battery mode, are stored up for negative busbar capacitance During energy, the current potential of the cathode of DC power supply DC will not saltus step.
The operation principle of circuit in PFC rectifiers shown in Figure 29 a in addition to K6 is switched and the PFC shown in Figure 23 a are whole The operation principle for flowing device is identical, and details are not described herein;The work of circuit in PFC rectifiers shown in Figure 30 a in addition to K6 is switched It is identical with the operation principle of the PFC rectifiers shown in Figure 24 a to make principle, details are not described herein;PFC rectifiers shown in Figure 31 a In circuit in addition to K6 is switched operation principle it is identical with the operation principle of the PFC rectifiers shown in Figure 25 a, it is no longer superfluous herein It states.
When the switching tube that the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is inverse parallel body diode When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 32 a, Figure 33 a, Figure 34 a.Figure 32 a, Figure 33 a, shown in Figure 34 a Switching tube Q8 and its antiparallel body diode in PFC rectifiers are equivalent to the diode in Figure 29 a, Figure 30 a and Figure 31 a Structure in parallel with switch K6 D8;Wherein, the antiparallel body diode of switching tube Q8 is equivalent to diode D8, switching tube Q8 etc. It imitates in switch K6.The operation principle of PFC rectifiers shown in Figure 32 a and the operation principle phase of the PFC rectifiers shown in Figure 29 a Together, details are not described herein;The operation principle of PFC rectifiers shown in Figure 33 a and the work of the PFC rectifiers shown in Figure 30 a are former Manage identical, details are not described herein;The operation principle of PFC rectifiers shown in Figure 34 a and the work of the PFC rectifiers shown in Figure 31 a It is identical to make principle, details are not described herein.
When the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention are three-phase PFC rectification circuits and the PFC When the cathode of DC power supply is connected with PFC inductance when rectifier is operated under battery mode, PFC provided in an embodiment of the present invention is whole Device is flowed as shown in fig. 19b, including PFC rectification circuits;Each first rectifying tube in the PFC rectification circuits is two pole of inverse parallel body The switching tube of pipe, i.e. the first rectifying tube 181A are the switching tube Q6A of inverse parallel body diode, the first rectifying tube 181B is inverse parallel The switching tube Q6B of body diode and the first rectifying tube 181C be inverse parallel body diode switching tube Q6C (shown in Figure 20 b) or Each first rectifying tube in person's PFC rectification circuits is switch and the parallel-connection structure of diode (in Figure 21 b the first rectifying tube 181A is to switch the parallel-connection structure that K5A is diode D5A, and the first rectifying tube 181B is that switch K5B is that diode D5B's and is coupled Structure, the first rectifying tube 181C are to switch the parallel-connection structure that K5C is diode D5C);Wherein, each first rectifying tube is PFC rectifications The rectifying tube being connected in two rectifying tubes when circuit is operated under battery mode in PFC rectification circuits with DC power supply DC;Its In, when under battery mode, DC power supply DC is PFC rectifier power supplies.
When PFC rectifiers are operated under battery mode, in Figure 19 b, Figure 20 b or Figure 21 b, the cathode of DC power supply DC Connect the PFC inductance in PFC rectifiers, i.e. inductance L2A, inductance L2B, inductance L2C.
In Figure 19 b, Figure 20 b or Figure 21 b, PFC rectifiers provided in an embodiment of the present invention include:Diode D6A and figure (switch K5A in switching tube Q6A, Figure 21 b in Figure 20 b and diode D5A's and are coupled the first rectifying tube 181A in 19b Structure) connecting forms third branch, the first rectifying tube 181B (switching tube Q6B, figure in Figure 20 b in diode D6B and Figure 19 b Switch K5B and the parallel-connection structure of diode D5B in 21b) connecting forms the 4th branch, and first in diode D6C and Figure 19 b Rectifying tube 181C (the switch K5C and the parallel-connection structure of diode D5C in switching tube Q6C, Figure 21 b in Figure 20 b) formation of connecting 5th branch, switching tube Q4 and switching tube Q5 connect to form the 6th branch, one end connection two of A phase PFC inductance, i.e. inductance L2A The first rectifying tube 181A (switch K5A and diode in switching tube Q6A, Figure 21 b in Figure 20 b in pole pipe D6A and Figure 19 b The parallel-connection structure of D5A) connected tie point, B phase PFC inductance, i.e. inductance L2B one end connection diode D6B and Figure 19 b in First rectifying tube 181B (the switch K5B and the parallel-connection structure of diode D5B in switching tube Q6B, Figure 21 b in Figure 20 b) is connected Tie point, C phase PFC inductance, i.e. inductance L2C one end connection diode D6C and Figure 19 b in the first rectifying tube 181C (figures The switch K5C and the parallel-connection structure of diode D5C in switching tube Q6C, Figure 21 b in 20b) tie point that is connected;Third branch, One end after 4th branch, the 5th branch and the 6th branch circuit parallel connection connects positive pole line capacitance, i.e. capacitance by the first continued flow tube 182 One end of C5, one end that the first continued flow tube 182 is connected with capacitance C5 are the positive pole line output terminal BUS+ of three-phase PFC rectification circuits; The other end after third branch, the 4th branch, the 5th branch and the 6th branch circuit parallel connection by diode D8 connection negative busbar capacitances, That is one end of capacitance C6, the other end of the other end connection capacitance C5 of capacitance C6, diode D8 are with capacitance C6 one end being connected The negative busbar output terminal BUS- of three-phase PFC rectification circuits;Capacitance C5 is three-phase alternating current with the voltage of the capacitance C6 tie points being connected The voltage on zero curve N in power supply AC.
When Figure 19 b, Figure 20 b or the PFC rectifiers shown in Figure 21 b are operated under battery mode, A phase PFC inductance, i.e. inductance L2A is connected by switching the cathode of K3A and DC power supply DC, and B phase PFC inductance, i.e. inductance L2B is by switching K3B and direct current The cathode of source DC is connected, C phase PFC inductance, i.e. inductance L2C is connected by switching the cathode of K3C and DC power supply DC, and switch K4 is closed It closes.When the PFC rectifiers shown in Figure 19 b, Figure 20 b or Figure 21 b are negative busbar capacitance, i.e. capacitance C6 energy storage, Figure 19 b, Figure 20 b Or there are three types of working methods for the PFC rectifiers shown in Figure 21 b.
The first working method is:When it is negative busbar capacitance, i.e. capacitance C6 energy storage that PFC rectifiers are by inductance L2A, figure The first rectifying tube 181A high frequency choppings (the switching tube Q6A high frequency choppings in Figure 20 b, the switch K5A high frequencies in Figure 21 b in 19b Copped wave), switching tube Q5 shutdowns, switching tube Q4 conductings;When the first rectifying tube 181A conducting (in Figure 20 b switching tube Q6A conducting, Switch K5A in Figure 21 b is closed) when, electric current passes through anode, the first rectifying tube 181A (switches in Figure 20 a of DC power supply DC Switch K5A in pipe Q6A, Figure 21 a), PFC inductance (i.e. inductance L2A), reach the cathode of DC power supply DC, form tank circuit, Inductance L2A energy storage;When the first rectifying tube 181A shutdowns (the switching tube Q6A in Figure 20 b is turned off, and the switch K5A in Figure 21 b is disconnected) When, electric current passes through anode, switching tube Q4, capacitance C6, diode D8, diode D6A, the inductance L2A of DC power supply DC, reaches straight The cathode of galvanic electricity source DC forms continuous current circuit, and inductance L2A releases energy, capacitance C6 energy storage;That is, when PFC rectifiers lead to When crossing inductance L2A as capacitance C6 energy storage, DC power supply DC, the first rectifying tube 181A are (in switching tube Q6A, Figure 20 b in Figure 19 b Switch K5A), inductance L2A, switching tube Q4, capacitance C6, diode D8, diode D6A composition boost circuits.When PFC rectifications When device by inductance L2B is negative busbar capacitance, i.e. capacitance C6 energy storage, the first rectifying tube 181B high frequency choppings (figure in Figure 19 b Switching tube Q6B high frequency choppings in 20b, the switch K5B high frequency choppings in Figure 21 b), switching tube Q5 shutdowns, switching tube Q4 conductings; When the first rectifying tube 181B conductings (the switching tube Q6B in Figure 20 b is connected, and the switch K5B in Figure 21 b is closed), electric current passes through The anode of DC power supply DC, the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 b in Figure 20 b), PFC inductance (i.e. inductance L2B) reaches the cathode of DC power supply DC, forms tank circuit, inductance L2B energy storage;When the first rectifying tube 181B is closed When disconnected (the switching tube Q6B in Figure 20 b is turned off, and the switch K5B in Figure 21 b is disconnected), electric current passes through the anode of DC power supply DC, opens Pipe Q4, capacitance C6, diode D8, diode D6B, inductance L2B are closed, reaches the cathode of DC power supply DC, forms continuous current circuit, electricity Sense L2B releases energy, capacitance C6 energy storage;That is, when PFC rectifiers are capacitance C6 energy storage by inductance L2B, direct current Source DC, the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 b in Figure 20 b), inductance L2B, switching tube Q4, electricity Hold C6, diode D8, diode D6B composition boost circuits.It is when PFC rectifiers by inductance L2C are negative busbar capacitance, i.e., electric When holding C6 energy storage, the first rectifying tube 181C high frequency choppings in Figure 19 b (switching tube Q6C high frequency choppings in Figure 20 b, in Figure 21 b Switch K5C high frequency choppings), switching tube Q5 shutdown, switching tube Q4 conducting;When (opening in Figure 20 b is connected in the first rectifying tube 181C Close pipe Q6C to be connected, the switch K5C in Figure 21 b is closed) when, electric current passes through anode, the first rectifying tube 181C of DC power supply DC (the switch K5C in switching tube Q6C, Figure 21 b in Figure 20 b), PFC inductance (i.e. inductance L2C) reach the negative of DC power supply DC Pole forms tank circuit, inductance L2C energy storage;As the first rectifying tube 181C shutdowns (the switching tube Q6C shutdowns in Figure 20 b, Figure 21 b In switch K5C disconnect) when, electric current pass through DC power supply DC anode, switching tube Q4, capacitance C6, diode D8, diode D6C, inductance L2C reach the cathode of DC power supply DC, form continuous current circuit, and inductance L2C releases energy, capacitance C6 energy storage;Also It is to say, when PFC rectifiers are capacitance C6 energy storage by inductance L2C, DC power supply DC, inductance L2C, the first rectifying tube 181C (the switch K5C in switching tube Q6C, Figure 21 b in Figure 20 b), switching tube Q4, capacitance C6, diode D8, diode D6C compositions Boost circuits.Since switching tube Q4 is connected, the current potential of the anode of DC power supply DC is clamped zero for AC power AC Current potential on line.
Second of working method be:When it is negative busbar capacitance, i.e. capacitance C6 energy storage that PFC rectifiers are by inductance L2A, figure The first rectifying tube 181A shutdowns (the switching tube Q6A in Figure 20 b is turned off, and the switch K5A in Figure 21 b is disconnected) in 19b, switching tube Q5 high frequency choppings, switching tube Q4 conductings;When switching tube Q5 is connected, electric current passes through the anode of DC power supply DC, switching tube Q4, opens Pipe Q5, diode D6A, inductance L2A are closed, reaches the cathode of DC power supply DC, forms tank circuit, inductance L2A energy storage;Work as switch When pipe Q5 is turned off, electric current passes through anode, switching tube Q4, capacitance C6, diode D8, diode D6A, the inductance of DC power supply DC L2A reaches the cathode of DC power supply DC, forms continuous current circuit, and inductance L2A releases energy, capacitance C6 energy storage;That is, work as PFC rectifiers by inductance L2A be negative busbar capacitance, i.e. capacitance C6 energy storage when, DC power supply DC, switching tube Q4, switching tube Q5, Diode D6A, inductance L2A, capacitance C6, diode D8 composition boost circuits.When PFC rectifiers by inductance L2B be negative busbar During capacitance, i.e. capacitance C6 energy storage, DC power supply DC, switching tube Q4, switching tube Q5, diode D6B, inductance L2B, capacitance C6, two Pole pipe D8 forms boost circuits.When it is negative busbar capacitance, i.e. capacitance C6 energy storage that PFC rectifiers are by inductance L2C, direct current Source DC, switching tube Q4, switching tube Q5, diode D6C, inductance L2C, capacitance C6, diode D8 composition boost circuits.Due to opening Pipe Q4 conductings are closed, therefore, the current potential of the anode of DC power supply DC is clamped the current potential on the zero curve for AC power AC.
The third working method is:When it is negative busbar capacitance, i.e. capacitance C6 energy storage that PFC rectifiers are by inductance L2A, figure The first rectifying tube 181A high frequency choppings (the switching tube Q6A high frequency choppings in Figure 20 b, the switch K5A high frequencies in Figure 21 b in 19b Copped wave), switching tube Q5 high frequency choppings, switching tube Q4 conductings, and the first rectifying tube 181A (switching tube Q6A high frequencies in Figure 20 b Copped wave, the switch K5A high frequency choppings in Figure 21 b) and switching tube Q4 alternating choppers;When PFC rectifiers are capacitance C6 energy storage, directly Galvanic electricity source DC, the first rectifying tube 181A (the switch K5A in switching tube Q6A, Figure 21 b in Figure 20 b), switching tube Q4, capacitance C6, Diode D8, diode D6A, inductance L2A form the first boost circuits;DC power supply DC, switching tube Q4, switching tube Q5, two poles Pipe D6A, inductance L2A, capacitance C6, diode D8 form the 2nd boost circuits.When PFC rectifiers by inductance L2B be negative busbar During capacitance, i.e. capacitance C6 energy storage, the first rectifying tube 181B high frequency choppings in Figure 19 b (cut by the switching tube Q6B high frequencies in Figure 20 b Wave, the switch K5B high frequency choppings in Figure 21 b), switching tube Q5 high frequency choppings, switching tube Q4 conductings, and the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 b in Figure 20 b) and switching tube Q5 alternating choppers;When PFC rectifiers are stored up for capacitance C6 Can when, DC power supply DC, the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 b in Figure 20 b), inductance L2B, Switching tube Q4, capacitance C6, diode D8, diode D6B form the 3rd boost circuits, DC power supply DC, switching tube Q4, switch Pipe Q5, diode D6B, inductance L2B, capacitance C6, diode D8 form the 4th boost circuits.When PFC rectifiers pass through inductance When L2C is negative busbar capacitance, i.e. capacitance C6 energy storage, the first rectifying tube 181C high frequency chopping (switches in Figure 20 b in Figure 19 b Pipe Q6C high frequency choppings, the switch K5C high frequency choppings in Figure 21 b), switching tube Q5 high frequency choppings, switching tube Q4 conductings, and the One rectifying tube 181C (the switch K5C in switching tube Q6B, Figure 21 b in Figure 20 b) and switching tube Q5 alternating choppers;When PFC rectifications When device is capacitance C6 energy storage, DC power supply DC, the first rectifying tube 181C (switches in switching tube Q6C, Figure 21 b in Figure 20 b K5C), inductance L2C, switching tube Q4, capacitance C6, diode D8, diode D6C the 5th boost circuits of composition, DC power supply DC, Switching tube Q4, switching tube Q5, diode D6C, inductance L2C, capacitance C6, diode D8 form the 6th boost circuits.And due to Switching tube Q4 is connected, and therefore, the current potential of the anode of DC power supply DC is clamped the current potential on the zero curve for AC power AC.
Similarly, in the case that the ripple of the electric current on PFC inductance is identical, shown in Figure 19 b, Figure 20 b or Figure 21 b When PFC rectifiers use the third mode of operation, using the first mode of operation and it is somebody's turn to do compared to the PFC rectifiers PFC rectifiers are used for second of mode of operation, switching frequency are reduced, so as to reduce switching loss.
Also, energy storage during the first working method is used due to the PFC rectifiers shown in Figure 19 b, Figure 20 b or Figure 21 b Circuit is less than the tank circuit when PFC rectifiers use second of working method, and circuit is smaller, and conduction loss is also got over Small, the efficiency of PFC rectifiers is also higher, therefore, the efficiency of PFC rectifiers can be improved using the first working method.
It is positive bus-bar when the PFC rectifiers that Figure 19 b, Figure 20 b or Figure 21 b show are operated under battery mode through inductance L2A During capacitance, i.e. capacitance C5 energy storage, the first rectifying tube 181A high frequency choppings in the PFC rectifiers shown in Figure 19 b are (shown in Figure 20 b PFC rectifiers in switching tube Q6A high frequency choppings, the switch K5A high frequency choppings in Figure 21 b), switching tube Q5 conducting, switch Pipe Q4 is turned off;When the first rectifying tube 181A conductings (switch in switching tube Q6A conductings, Figure 21 b in Figure 20 b in Figure 19 b K5A is closed) when, electric current passes through the anode of DC power supply DC, the first rectifying tube 181A (in switching tube Q6A, Figure 21 b in Figure 20 b Switch K5A), PFC inductance (i.e. inductance L2A), reach the cathode of DC power supply DC, form tank circuit, inductance L2A energy storage; At this point, the voltage that the voltage of DC power supply DC cathode is positive pole line output terminal BUS+ passes through diode D6A and the first continued flow tube 182 Voltage after partial pressure, the voltage are less than the voltage of positive pole line output terminal BUS+.When the first rectifying tube 181A shutdowns in Figure 19 b When (the switch K5A in switching tube Q6A shutdowns, Figure 21 b in Figure 20 b is disconnected), electric current passes through the anode of DC power supply DC, first Continued flow tube 182, capacitance C5, switching tube Q5, diode D6A, inductance L2A reach the cathode of DC power supply DC, form afterflow and return Road, inductance L2A release energy, capacitance C5 energy storage;At this point, since the first continued flow tube 182 is connected, DC power supply DC is just The current potential of pole is clamped the current potential for positive pole line output terminal BUS+;That is, it is capacitance to work as PFC rectifiers by inductance L2A During C5 energy storage, the first rectifying tube 181A (switches in switching tube Q6A, Figure 21 b in Figure 20 b in DC power supply DC, Figure 19 b K5A), inductance L2A, the first continued flow tube 182, capacitance C5, switching tube Q5, diode D6A composition boost circuits.When Figure 19 b, figure The PFC rectifiers that 20b or Figure 21 b show be operated under battery mode by inductance L2B be positive pole line capacitance, i.e. capacitance C5 energy storage When, the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 b in Figure 20 b), electricity in DC power supply DC, Figure 19 b Feel L2B, the first continued flow tube 182, capacitance C5, switching tube Q5, diode D6B composition boost circuits;And in the boost circuits In, during inductance L2B energy storage, the voltage that the voltage of DC power supply DC anodes is positive pole line output terminal BUS+ passes through two poles Pipe D6B and the first continued flow tube 182 partial pressure after voltage, the voltage be less than positive pole line output terminal BUS+ voltage;In boost electricity Lu Zhong, during inductance L2B releases energy, since the first continued flow tube 182 is connected, the anode of DC power supply DC Current potential is clamped the current potential for positive pole line output terminal BUS+.When the PFC rectifiers that Figure 19 b, Figure 20 b or Figure 21 b show are operated in electricity When by inductance L2C being positive pole line capacitance, i.e. capacitance C5 energy storage under pool mode, the first rectifying tube in DC power supply DC, Figure 19 b 181C (the switch K5C in switching tube Q6C, Figure 21 b in Figure 20 b), inductance L2C, the first continued flow tube 182, capacitance C5, switching tube Q5, diode D6C form boost circuits;And in the boost circuits, during inductance L2C energy storage, DC power supply Voltage of the voltage that the voltage of DC anodes is positive pole line output terminal BUS+ after diode D6C and the first continued flow tube 182 partial pressure, The voltage is less than the voltage of positive pole line output terminal BUS+;In the boost circuits, during inductance L2C releases energy, by It is connected in the first continued flow tube 182, therefore, the current potential of the anode of DC power supply DC is clamped the electricity for positive pole line output terminal BUS+ Position.Therefore, Figure 19 b, Figure 20 b and the PFC rectifiers shown in Figure 21 b are operated under battery mode, are the first bus capacitor, i.e. just During bus capacitor energy storage, the saltus step of (i.e. the anode of the DC power supply) current potential for the electrode being connected in DC power supply with the first rectifying tube Amplitude, be operated under battery mode less than PFC rectification circuits of the prior art, be positive bus-bar capacitive energy storage when, direct current The amplitude of the saltus step of the current potential of the anode in source.
When Figure 19 b, Figure 20 b or the PFC rectifiers shown in Figure 21 b are operated under utility mode, inductance L2A passes through switch The firewire L_A of the A phases of K3A and AC power AC is connected, and inductance L2B is by switching the firewire L_ of the B phases of K3B and AC power AC B is connected, and inductance L2C is connected by switching the firewire L_C of the C phases of K3C and AC power AC, and switch K4 is disconnected.When Figure 19 b, figure When PFC rectifiers shown in 20b or Figure 21 b are operated under utility mode as negative busbar capacitance, i.e. capacitance C6 energy storage, Figure 19 b, figure There are three types of working methods for PFC rectifiers shown in 20b or Figure 21 b.
In the first working method, the first rectifying tube 181A, the first rectifying tube 181B and the first rectifying tube in Figure 19 b 181C disconnects that (switching tube Q6A, switching tube Q6B and switching tube Q6C in Figure 20 b are turned off, and switch K5A in Figure 21 b, are opened Close K5B and switch K5C disconnect), switching tube Q5 high frequency choppings;Therefore, the alternating voltage exported in the A phases of AC power AC Negative half-cycle, AC power AC, switching tube Q5, diode D6A, inductance L2A, capacitance C6, diode D8 form boost circuits; In the negative half-cycle of alternating voltage that the B phases of AC power AC export, AC power AC, switching tube Q5, diode D6B, inductance L2B, capacitance C6, diode D8 form boost circuits;In the negative half-cycle of alternating voltage that the C phases of AC power AC export, hand over Galvanic electricity source AC, switching tube Q5, diode D6C, inductance L2C, capacitance C6, diode D8 form boost circuits.
In second of working method, the first rectifying tube 181A, the first rectifying tube 181B and the first rectifying tube in Figure 19 b The equal high frequency choppings of 181C (opening in the switching tube Q6A, switching tube Q6B and the equal high frequency choppings of switching tube Q6C, Figure 21 b in Figure 20 b Close K5A, switch K5B and switch K5C equal high frequency choppings), switching tube Q5 shutdowns;Therefore, the friendship exported in the A phases of AC power AC The negative half-cycle of galvanic electricity pressure, the first rectifying tube in AC power AC, the antiparallel body diode of switching tube Q4, Figure 19 b 181A (the switch K5A in switching tube Q6A, Figure 21 b in Figure 20 b), inductance L2A, capacitance C6, diode D8, diode D6A structures Into boost circuits;In the negative half-cycle of alternating voltage that the B phases of AC power AC export, AC power AC, switching tube Q4 it is anti- In parallel body diode, the first rectifying tube 181B (the switch K5B in switching tube Q6B, Figure 21 b in Figure 20 b) in Figure 19 b, Inductance L2B, capacitance C6, diode D8, diode D6B form boost circuits;In the alternating current that the C phases of AC power AC export The negative half-cycle of pressure, the first rectifying tube 181C (figures in AC power AC, the antiparallel body diode of switching tube Q4, Figure 19 b The switch K5C in switching tube Q6C, Figure 21 b in 20b), inductance L2C, capacitance C6, diode D8, diode D6C form boost Circuit.
In the third working method, the first rectifying tube 181A, the first rectifying tube 181B and the first rectifying tube in Figure 19 b The equal high frequency choppings of 181C (opening in the switching tube Q6A, switching tube Q6B and the equal high frequency choppings of switching tube Q6C, Figure 21 b in Figure 20 b Close K5A, switch K5B and switch K5C equal high frequency choppings), switching tube Q5 high frequency choppings, and the first rectifying tube 181A in Figure 19 b, First rectifying tube 181B and the first rectifying tube 181C (switching tube Q6A, switching tube Q6B and switching tube Q6C, Figure 21 b in Figure 20 b In switch K5A, switch K5B and switch K5C) with switching tube Q5 alternating choppers;Therefore, it is exported in the A phases of AC power AC Alternating voltage negative half-cycle, the first rectifying tube in AC power AC, the antiparallel body diodes of switching tube Q4, Figure 19 b 181A (the switch K5A in switching tube Q6A, Figure 21 b in Figure 20 b), inductance L2A, capacitance C6, diode D8, diode D6A structures Into a boost circuit;AC power AC, switching tube Q5, diode D6A, inductance L2A, capacitance C6, diode D8 form another A boost circuits.Therefore, the negative half-cycle of alternating voltage exported in the B phases of AC power AC, AC power AC, switching tube The first rectifying tube 181B (switches in switching tube Q6B, Figure 21 b in Figure 20 b in the antiparallel body diodes of Q4, Figure 19 b K5B), inductance L2B, capacitance C6, diode D8, diode D6B form a boost circuit;AC power AC, switching tube Q5, Diode D6B, inductance L2B, capacitance C6, diode D8 form another boost circuit.Therefore, it is defeated in the C phases of AC power AC The negative half-cycle of the alternating voltage gone out, the first rectification in AC power AC, the antiparallel body diodes of switching tube Q4, Figure 19 b Pipe 181C (the switch K5C in switching tube Q6C, Figure 21 b in Figure 20 b), inductance L2C, capacitance C6, diode D8, diode D6C Form a boost circuit;AC power AC, switching tube Q5, diode D6C, inductance L2C, capacitance C6, diode D8 form another One boost circuit.
When PFC rectifiers provided in an embodiment of the present invention are operated in the negative half period of the alternating voltage of AC power AC outputs Phase, in the case that ripple on PFC inductance, that is, inductance L2A, inductance L2B, inductance L2C is identical, using the third working method When PFC rectifiers in switch or switching tube switching frequency it is minimum, therefore, using PFC rectifiers during the third working method Switching loss it is minimum.
It is positive pole line capacitance when the PFC rectifiers shown in Figure 19 b are operated under utility mode, i.e. capacitance C5 energy storage exists The positive half period of the A phase alternating voltages of AC power AC outputs, the first rectifying tube 181A, the first rectifying tube 181B in Figure 19 b It is both turned on the first rectifying tube 181C, switching tube Q4 high frequency choppings;Therefore, the alternating voltage exported in the A phases of AC power AC Positive half period, AC power AC, inductance L2A, the first rectifying tube 181A, switching tube Q4, the first continued flow tube 182, capacitance C5 structures Into boost circuits;In the positive half period of alternating voltage that the B phases of AC power AC export, AC power AC, inductance L2B, first Rectifying tube 181B, switching tube Q4, the first continued flow tube 182, capacitance C5 form boost circuits;It is exported in the C phases of AC power AC The positive half period of alternating voltage, AC power AC, inductance L2C, the first rectifying tube 181C, switching tube Q4, the first continued flow tube 182, Capacitance C5 forms boost circuits.
It is positive pole line capacitance that PFC rectifiers shown in Figure 20 b, which are operated under utility mode, i.e. capacitance C5 energy storage is being handed over During the positive half period of the alternating voltage of galvanic electricity source AC outputs, working method and the PFC rectifications shown in Figure 19 b of the PFC rectifiers The working method of device is identical, differs only in:The first rectifying tube 181A conductings in Figure 19 b refer to the switching tube in Figure 20 b Q6A is connected or switching tube Q6A shutdowns, when the switching tube Q6A conductings in Figure 20 b, switching tube Q6A and its antiparallel body two Pole pipe is equivalent to the first rectifying tube 181A in Figure 19 b;When in Figure 20 b switching tube Q6A shutdown when, switching tube Q6A it is anti-simultaneously The body diode of connection is equivalent to the first rectifying tube 181A in Figure 19 b;The first rectifying tube 181B conductings in Figure 19 b refer to figure In 20b switching tube Q6B conducting or switching tube Q6B shutdown, when in Figure 20 b switching tube Q6B conducting when, switching tube Q6B and Its antiparallel body diode is equivalent to the first rectifying tube 181B in Figure 19 b;When the switching tube Q6B shutdowns in Figure 20 b, open The antiparallel body diode of pass pipe Q6B is equivalent to the first rectifying tube 181B in Figure 19 b;The first rectifying tube in Figure 19 b 181C conductings refer to switching tube Q6C conductings or switching tube Q6C shutdowns in Figure 20 b, when the switching tube Q6C conductings in Figure 20 b When, switching tube Q6C and its antiparallel body diode are equivalent to the first rectifying tube 181C in Figure 19 b;Switch in Figure 20 b When pipe Q6C is turned off, the antiparallel body diode of switching tube Q6C is equivalent to the first rectifying tube 181C in Figure 19 b.
It is negative busbar capacitance that PFC rectifiers shown in Figure 21 b, which are operated under utility mode, i.e. capacitance C6 energy storage is being handed over During the negative half-cycle of the alternating voltage of galvanic electricity source AC outputs, working method and the PFC rectifications shown in Figure 19 b of the PFC rectifiers The working method of device is identical, differs only in:The first rectifying tube 181A conductings in Figure 19 b refer to the switch K5A in Figure 21 b It is closed or switch K5A is disconnected, when the switch K5A in Figure 21 b is closed, the parallel-connection structure for switching K5A and diode D6A is equivalent The first rectifying tube 181A in Figure 19 b;When the switch K5A in Figure 21 b is disconnected, diode D6A in parallel with switch K5A etc. Imitate the first rectifying tube 181A in Figure 19 b;The first rectifying tube 181B conductings in Figure 19 b refer to that the switch K5B in Figure 21 b is closed It closes or switch K5B is disconnected, when the switch K5B in Figure 21 b is closed, the parallel-connection structure of switch K5B and diode D6B are equivalent to The first rectifying tube 181B in Figure 19 b;When the switch K5B in Figure 21 b is disconnected, the diode D6B in parallel with switch K5B is equivalent The first rectifying tube 181B in Figure 19 b;The first rectifying tube 181C conductings in Figure 19 b refer to that the switch K5C in Figure 21 b is closed Or switch K5C is disconnected, when the switch K5C in Figure 21 b is closed, the parallel-connection structure of switch K5C and diode D6C is equivalent to figure The first rectifying tube 181C in 19b;When the switch K5C in Figure 21 b is disconnected, the diode D6C in parallel with switch K5C is equivalent to The first rectifying tube 181C in Figure 19 b.
Preferably, the diode D5A in PFC rectifiers shown in Figure 19 b can also replace with inverse parallel body diode Switching tube or the parallel-connection structure for replacing with switch and diode, the diode D5B in PFC rectifiers shown in Figure 19 b also may be used With the parallel-connection structure for replacing with the switching tube of inverse parallel body diode or replacing with switch and diode, shown in Figure 19 b Diode D5C in PFC rectifiers can also replace with the switching tube of inverse parallel body diode or replace with switch and two poles The parallel-connection structure of pipe, the structure of the PFC rectifiers after replacement shown in Figure 19 b as shown in figure 22b, in Figure 22 b, the second rectifying tube 183A, the second rectifying tube 183B, the second rectifying tube 183C both can be the switching tube of inverse parallel body diode, or open Close the parallel-connection structure with diode.PFC rectifiers shown in Figure 22 b are operated under utility mode as positive pole line capacitance, i.e. capacitance During C5 energy storage, there are three types of working methods for PFC rectifiers.
In the first working method, in the positive half period of the A phase alternating voltages of AC power AC outputs, Figure 22 b First rectifying tube 181A conductings, switching tube Q4 high frequency choppings, the second rectifying tube 183A shutdown;AC power AC, inductance L2A, One rectifying tube 181A, switching tube Q4, the first continued flow tube 182, capacitance C5 form boost circuits;In the B phases of AC power AC outputs The positive half period of alternating voltage, the first rectifying tube 181B conductings, switching tube Q4 high frequency choppings, the second rectifying tube in Figure 22 b 183B is turned off;AC power AC, inductance L2B, the first rectifying tube 181B, switching tube Q4, the first continued flow tube 182, capacitance C5 are formed Boost circuits;The first rectifying tube 181C in the positive half period of the C phase alternating voltages of AC power AC outputs, Figure 22 b is led Logical, switching tube Q4 high frequency choppings, the second rectifying tube 183C shutdown;AC power AC, inductance L2C, the first rectifying tube 181C, switch Pipe Q4, the first continued flow tube 182, capacitance C5 form boost circuits.
In second of working method, in the positive half period of the A phase alternating voltages of AC power AC outputs, Figure 22 b First rectifying tube 181A conductings, switching tube Q4 shutdowns, the second rectifying tube 183A high frequency choppings;AC power AC, inductance L2A, Two rectifying tube 183A, the antiparallel body diode of switching tube Q5, the first rectifying tube 181A, the first continued flow tube 182, capacitance C5 structures Into boost circuits;The first rectifying tube 181B in the positive half period of the B phase alternating voltages of AC power AC outputs, Figure 22 b is led Logical, switching tube Q4 shutdowns, the second rectifying tube 183B high frequency choppings;AC power AC, inductance L2B, the second rectifying tube 183B, switch The antiparallel body diode of pipe Q5, the first rectifying tube 181B, the first continued flow tube 182, capacitance C5 form boost circuits;It is handing over The positive half period of the C phase alternating voltages of galvanic electricity source AC outputs, the first rectifying tube 181C conductings, switching tube Q4 shutdowns in Figure 22 b, Second rectifying tube 183C high frequency choppings;AC power AC, inductance L2C, the second rectifying tube 183C, switching tube Q5 antiparallel body Diode, the first rectifying tube 181C, the first continued flow tube 182, capacitance C5 form boost circuits.
In the third working method, in the positive half period of the A phase alternating voltages of AC power AC outputs, Figure 22 b First rectifying tube 181A conductings, switching tube Q4 high frequency choppings, the second rectifying tube 183A high frequency choppings, and switching tube Q4 and second is whole Flow tube 183A alternating choppers;AC power AC, inductance L2A, the first rectifying tube 181A, switching tube Q4, the first continued flow tube 182, electricity Hold C5 and form a boost circuit;AC power AC, inductance L2A, the second rectifying tube 183A, switching tube Q5 antiparallel body Diode, the first rectifying tube 181A, the first continued flow tube 182, capacitance C5 form another boost circuit;It is defeated in AC power AC The positive half period of B phase alternating voltages gone out, it is the first rectifying tube 181B conductings, switching tube Q4 high frequency choppings in Figure 22 b, second whole Flow tube 183B high frequency choppings, and switching tube Q4 and the second rectifying tube 183B alternating choppers;It is AC power AC, inductance L2B, first whole Flow tube 181B, switching tube Q4, the first continued flow tube 182, capacitance C5 form a boost circuit;AC power AC, inductance L2B, Two rectifying tube 183B, the antiparallel body diode of switching tube Q5, the first rectifying tube 181B, the first continued flow tube 182, capacitance C5 structures Into another boost circuit;The first rectifying tube in the positive half period of the C phase alternating voltages of AC power AC outputs, Figure 22 a 181C conductings, switching tube Q4 high frequency choppings, the second rectifying tube 183C high frequency choppings, and switching tube Q4 and the second rectifying tube 183C are handed over For copped wave;AC power AC, inductance L2C, the first rectifying tube 181C, switching tube Q4, the first continued flow tube 182, capacitance C5 form one A boost circuits;AC power AC, inductance L2C, the second rectifying tube 183C, the antiparallel body diode of switching tube Q5, first Rectifying tube 181C, the first continued flow tube 182, capacitance C5 form another boost circuit.
When the PFC rectifiers shown in Figure 22 b are operated under utility mode, for positive pole line capacitance, i.e. capacitance C5 energy storage (exists The positive half period of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Figure 22 b, When the first rectifying tube 181A in Figure 22 b is the switching tube of inverse parallel body diode, the first rectifying tube 181A in Figure 22 b is led Logical to refer to switching tube conducting or switching tube shutdown, when switching tube is connected, switching tube and its antiparallel body diode are equivalent The first rectifying tube 181A in Figure 22 b;When switching tube turns off, the antiparallel body diode of switching tube is equivalent to Figure 22 b In the first rectifying tube 181A.When the first rectifying tube 181A in Figure 22 b is the parallel-connection structure of switch and diode, Figure 22 b In the first rectifying tube 181A conducting refer to switch be closed or switch disconnect, when the switch is closed, switch with diode and It is coupled the first rectifying tube 181A that structure is equivalent in Figure 22 b;When the switch in Figure 22 b disconnects, the diode with switch in parallel The first rectifying tube 181A being equivalent in Figure 22 b.In situation and Figure 22 b when the first rectifying tube 181B in Figure 22 b is connected Situation when first rectifying tube 181B is connected is identical, and details are not described herein.Feelings when the first rectifying tube 181C in Figure 22 b is connected Situation when condition is connected with the first rectifying tube 181C in Figure 22 b is identical, and details are not described herein.
When the PFC rectifiers shown in Figure 22 b are operated under utility mode, for positive pole line capacitance, i.e. capacitance C5 energy storage (exists The positive half period of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Figure 22 b, When the second rectifying tube 183A in Figure 22 b is the switching tube of inverse parallel body diode, the second rectifying tube 183A shutdowns refer to out Pipe shutdown is closed, when the second rectifying tube 183A in Figure 22 b is the parallel-connection structure of switch and diode, the second rectifying tube 183A is closed It is disconnected to refer to that switch disconnects.Situation when the second rectifying tube 183B in Figure 22 b is turned off is closed with the second rectifying tube 183B in Figure 22 b Situation when disconnected is identical, and details are not described herein.The in situation and Figure 22 b during the second rectifying tube 183C shutdowns in Figure 22 b Situation when two rectifying tube 183C are turned off is identical, and details are not described herein.
When the PFC rectifiers shown in Figure 22 b are operated under utility mode, for positive pole line capacitance, i.e. capacitance C5 energy storage (exists The positive half period of the alternating voltage of AC power AC outputs) when, in three kinds of working methods of the PFC rectifiers shown in Figure 22 b, When the second rectifying tube 183A in Figure 22 b is the switching tube of inverse parallel body diode, the second rectifying tube 183A high frequency choppings are Refer to switching tube high frequency chopping, when the second rectifying tube 183A in Figure 22 b is the parallel-connection structure of switch and diode, the second rectification Pipe 183A high frequency choppings refer to switch high-frequency copped wave.Situation and Figure 22 b during the second rectifying tube 183B high frequency choppings in Figure 22 b In the second rectifying tube 183B high frequency choppings when situation it is identical, details are not described herein.The second rectifying tube 183C high in Figure 22 b Situation during frequency copped wave is identical with situation during the second rectifying tube 183C high frequency choppings in Figure 22 b, and details are not described herein.
Further, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention The PFC rectifiers that embodiment provides are as shown in Figure 23 b, Figure 24 b, Figure 25 b;Wherein, the work of the PFC rectifiers shown in Figure 23 b Principle is identical with the operation principle of the PFC rectifiers shown in Figure 19 b, and details are not described herein;PFC rectifiers shown in Figure 24 b Operation principle is identical with the operation principle of the PFC rectifiers shown in Figure 20 b, and details are not described herein;PFC rectifications shown in Figure 25 b The operation principle of device is identical with the operation principle of the PFC rectifiers shown in Figure 21 b, and details are not described herein.
Figure 23 b, Figure 24 b or the PFC rectifiers shown in Figure 25 b are operated under battery mode when being positive bus-bar capacitive energy storage, During PFC inductance (inductance L2A, inductance L2B or inductance L2C) energy storage, since switching tube Q4 is connected, DC power supply DC's The voltage of anode is that the voltage of positive pole line output terminal BUS+ passes through the junction capacity of diode D6A (diode D6B or diode D6C) Voltage after being divided with the junction capacity of diode D7, also, the junction capacity of diode D7 is bigger, the electricity of the anode of DC power supply DC Pressure is just closer to the voltage of positive pole line output terminal BUS+.
It is thus preferable to when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, this The PFC rectifiers that inventive embodiments provide further include the first capacitance, i.e. capacitance C9, and the first capacitance is in parallel with the first continued flow tube, this When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 26 b, Figure 27 b, Figure 28 b;Wherein, the PFC rectifications shown in Figure 26 b The operation principle of device is identical with the operation principle of the PFC rectifiers shown in Figure 19 b, and details are not described herein;PFC shown in Figure 27 b The operation principle of rectifier is identical with the operation principle of the PFC rectifiers shown in Figure 20 b, and details are not described herein;Shown in Figure 28 b The operation principle of PFC rectifiers is identical with the operation principle of the PFC rectifiers shown in Figure 21 b, and details are not described herein.
In Figure 26 b, Figure 27 b and Figure 28 b, due to the both ends of diode D7 capacitance C9 in parallel, this, which is equivalent to, increases The junction capacity of diode D7, therefore, it is positive pole that Figure 26 b, Figure 27 b or the PFC rectifiers shown in Figure 28 b, which are operated under battery mode, During line capacitance energy storage, during PFC inductive energy storages, the voltage of the anode of DC power supply DC is more nearly positive pole line output terminal The voltage of BUS+.
Optionally, when the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is diode, the present invention is real The PFC rectifiers for applying example offer further include first switch, that is, K6 are switched, at this point, PFC rectifiers provided in an embodiment of the present invention are such as Figure 29 b, Figure 30 b, shown in Figure 31 b.First switch in Figure 29 b, Figure 30 b or Figure 31 b switchs K6 and works in PFC rectifiers It is disconnected in utility mode, at this point, the first continued flow tube is equivalent to a diode;First in Figure 29 b, Figure 30 b or Figure 31 b opens It closes, that is, it is the negative busbar capacitance in PFC rectifiers, i.e. capacitance C6 energy storage to switch K6 in the case where PFC rectifiers are operated in battery mode When disconnect, at this point, the first continued flow tube is equivalent to a diode;First switch in Figure 29 b, Figure 30 b or Figure 31 b, that is, switch K6 is the positive pole line capacitance in PFC rectifiers in the case where PFC rectifiers are operated in battery mode, i.e., during capacitance C5 energy storage, It can disconnect and can also be closed when PFC inductance (inductance L2A, inductance L2B or inductance L2C) releases energy, at this point, as switch K6 During disconnection, the first continued flow tube is equivalent to a diode, and when switching K6 closures, the first continued flow tube is equivalent to a section lead.Figure First switch in 29b, Figure 30 b or Figure 31 b switchs K6 in the case where PFC rectifiers are operated in battery mode as in PFC rectifiers Positive pole line capacitance, i.e., during capacitance C5 energy storage during PFC inductance (inductance L2A, inductance L2B or inductance L2C) storage energy It is closed, at this point, the current potential of the anode of DC power supply DC is equal to the voltage of positive pole line output terminal BUS+;And Figure 29 b, Figure 30 b or figure PFC rectifiers shown in 31b are operated in the mistake for positive pole line capacitance, i.e. capacitance C5 energy storage in PFC rectifiers under battery mode Cheng Zhong, when PFC inductance (inductance L2A, inductance L2B or inductance L2C) releases energy, the current potential of the anode of DC power supply DC is equal to The voltage of positive pole line output terminal BUS+.
Therefore, Figure 29 b, Figure 30 b and the PFC rectifiers shown in Figure 31 b are operated under battery mode, are stored up for positive pole line capacitance During energy, the current potential of the anode of DC power supply DC will not saltus step.
The operation principle of circuit in PFC rectifiers shown in Figure 29 b in addition to K6 is switched and the PFC shown in Figure 23 b are whole The operation principle for flowing device is identical, and details are not described herein;The work of circuit in PFC rectifiers shown in Figure 30 b in addition to K6 is switched It is identical with the operation principle of the PFC rectifiers shown in Figure 24 b to make principle, details are not described herein;PFC rectifiers shown in Figure 31 b In circuit in addition to K6 is switched operation principle it is identical with the operation principle of the PFC rectifiers shown in Figure 25 b, it is no longer superfluous herein It states.
When the switching tube that the first continued flow tube in PFC rectifiers provided in an embodiment of the present invention is inverse parallel body diode When, PFC rectifiers provided in an embodiment of the present invention are as shown in Figure 32 b, Figure 33 b, Figure 34 b.Figure 32 b, Figure 33 b, shown in Figure 34 b Switching tube Q8 and its antiparallel body diode in PFC rectifiers are equivalent to the diode in Figure 29 b, Figure 30 b and Figure 31 b Structure in parallel with switch K6 D7;Wherein, the antiparallel body diode of switching tube Q8 is equivalent to diode D7, switching tube Q8 etc. It imitates in switch K6.The operation principle of PFC rectifiers shown in Figure 32 b and the operation principle phase of the PFC rectifiers shown in Figure 29 b Together, details are not described herein;The operation principle of PFC rectifiers shown in Figure 33 b and the work of the PFC rectifiers shown in Figure 30 b are former Manage identical, details are not described herein;The operation principle of PFC rectifiers shown in Figure 34 b and the work of the PFC rectifiers shown in Figure 31 b It is identical to make principle, details are not described herein.
Certainly, when the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention are n phase PFC rectification circuits, PFC Identical structure may be used in n the first rectifying tubes in rectifier, can also use different structures.In the embodiment of the present invention Only illustrated so that n the first rectifying tubes use identical structure as an example.Certainly, PFC rectifiers provided in an embodiment of the present invention In PFC rectification circuits when being n phase PFC rectification circuits, identical knot may be used in n the second rectifying tubes in PFC rectifiers Structure can also use different structures.It is only carried out so that n the second rectifying tubes use identical structure as an example in the embodiment of the present invention Explanation.
A kind of control method provided in an embodiment of the present invention, for controlling PFC rectifiers provided in an embodiment of the present invention, packet It includes:
It is powered in the PFC rectifiers by DC power supply (under i.e. PFC rectifiers are operated in battery mode) and is described During the first bus capacitor energy storage in PFC rectifiers, control the first main switch shutdown, and the conducting of the second main switch is controlled, And control the first rectifying tube high frequency chopping;
Wherein, first main switch be the PFC rectification circuits two main switches in first rectification The main switch that pipe is connected directly, second main switch be the PFC rectification circuits two main switches in except described Main switch other than first main switch;First bus capacitor is the positive pole line capacitance of the PFC rectification circuits and bears The bus capacitor being connected directly in bus capacitor with the first continued flow tube;First continued flow tube is in the PFC rectification circuits The continued flow tube being connected directly in two continued flow tubes with first rectifying tube.
Wherein, it is operated in the PFC in the anode connection PFC rectification circuits of DC power supply under battery mode in PFC rectifiers In the case of inductance, when PFC rectification circuits are Single Phase PFC Rectifier, the first main switch is Fig. 2 a, Fig. 3 a, Fig. 4 a, is schemed In 6a, Fig. 7 a, Fig. 8 a, Fig. 9 a, Figure 10 a, Figure 11 a, Figure 12 a, Figure 13 a, Figure 14 a, Figure 15 a, Figure 16 a, Figure 17 a and Figure 18 a Switching tube Q2 in any one figure;Second main switch for Fig. 2 a, Fig. 3 a, Fig. 4 a, Fig. 6 a, Fig. 7 a, Fig. 8 a, Fig. 9 a, Figure 10 a, The switching tube Q1 in any one figure in Figure 11 a, Figure 12 a, Figure 13 a, Figure 14 a, Figure 15 a, Figure 16 a, Figure 17 a and Figure 18 a;First Bus capacitor is Fig. 2 a, Fig. 3 a, Fig. 4 a, Fig. 6 a, Fig. 7 a, Fig. 8 a, Fig. 9 a, Figure 10 a, Figure 11 a, Figure 12 a, Figure 13 a, Figure 14 a, is schemed The negative busbar capacitance in any one figure in 15a, Figure 16 a, Figure 17 a and Figure 18 a, i.e. capacitance C2, the second bus capacitor for Fig. 2 a, Fig. 3 a, Fig. 4 a, Fig. 6 a, Fig. 7 a, Fig. 8 a, Fig. 9 a, Figure 10 a, Figure 11 a, Figure 12 a, Figure 13 a, Figure 14 a, Figure 15 a, Figure 16 a, Figure 17 a With the positive pole line capacitance in any one figure in Figure 18 a, i.e. capacitance C1;When PFC rectification circuits are three-phase PFC rectification circuits, First switch Guan Weitu Figure 19 a, Figure 20 a, Figure 21 a, Figure 22 a, Figure 23 a, Figure 24 a, Figure 25 a, Figure 26 a, Figure 27 a, Figure 28 a, figure The switching tube Q5 in any one figure in 29a, Figure 30 a, Figure 31 a, Figure 32 a, Figure 33 a and Figure 34 a, second switch pipe for Figure 19 a, Figure 20 a, Figure 21 a, Figure 22 a, Figure 23 a, Figure 24 a, Figure 25 a, Figure 26 a, Figure 27 a, Figure 28 a, Figure 29 a, Figure 30 a, Figure 31 a, figure Switching tube Q4 in any one figure in 32a, Figure 33 a and Figure 34 a, the first bus capacitor is Figure 19 a, Figure 20 a, Figure 21 a, is schemed 22a, Figure 23 a, Figure 24 a, Figure 25 a, Figure 26 a, Figure 27 a, Figure 28 a, Figure 29 a, Figure 30 a, Figure 31 a, Figure 32 a, Figure 33 a and Figure 34 a In any one figure in negative busbar capacitance, i.e. capacitance C6, the second bus capacitor for Figure 19 a, Figure 20 a, Figure 21 a, Figure 22 a, figure Appointing in 23a, Figure 24 a, Figure 25 a, Figure 26 a, Figure 27 a, Figure 28 a, Figure 29 a, Figure 30 a, Figure 31 a, Figure 32 a, Figure 33 a and Figure 34 a The positive pole line capacitance anticipated in a figure, i.e. capacitance C5.
Wherein, it is operated in the PFC in the cathode connection PFC rectification circuits of DC power supply under battery mode in PFC rectifiers In the case of inductance, when PFC rectification circuits are Single Phase PFC Rectifier, the first main switch is Fig. 2 b, Fig. 3 b, Fig. 4 b, is schemed In 6b, Fig. 7 b, Fig. 8 b, Fig. 9 b, Figure 10 b, Figure 11 b, Figure 12 b, Figure 13 b, Figure 14 b, Figure 15 b, Figure 16 b, Figure 17 b and Figure 18 b Switching tube Q1 in any one figure;Second main switch for Fig. 2 b, Fig. 3 b, Fig. 4 b, Fig. 6 b, Fig. 7 b, Fig. 8 b, Fig. 9 b, Figure 10 b, The switching tube Q2 in any one figure in Figure 11 b, Figure 12 b, Figure 13 b, Figure 14 b, Figure 15 b, Figure 16 b, Figure 17 b and Figure 18 b;First Bus capacitor is Fig. 2 b, Fig. 3 b, Fig. 4 b, Fig. 6 b, Fig. 7 b, Fig. 8 b, Fig. 9 b, Figure 10 b, Figure 11 b, Figure 12 b, Figure 13 b, Figure 14 b, is schemed The positive pole line capacitance in any one figure in 15b, Figure 16 b, Figure 17 b and Figure 18 b, i.e. capacitance C1, the second bus capacitor for Fig. 2 b, Fig. 3 b, Fig. 4 b, Fig. 6 b, Fig. 7 b, Fig. 8 b, Fig. 9 b, Figure 10 b, Figure 11 b, Figure 12 b, Figure 13 b, Figure 14 b, Figure 15 b, Figure 16 b, Figure 17 b With the negative busbar capacitance in any one figure in Figure 18 b, i.e. capacitance C2;When PFC rectification circuits are three-phase PFC rectification circuits, First switch pipe is Figure 19 b, Figure 20 b, Figure 21 b, Figure 22 b, Figure 23 b, Figure 24 b, Figure 25 b, Figure 26 b, Figure 27 b, Figure 28 b, is schemed The switching tube Q4 in any one figure in 29b, Figure 30 b, Figure 31 b, Figure 32 b, Figure 33 b and Figure 34 b, second switch pipe for Figure 19 b, Figure 20 b, Figure 21 b, Figure 22 b, Figure 23 b, Figure 24 b, Figure 25 b, Figure 26 b, Figure 27 b, Figure 28 b, Figure 29 b, Figure 30 b, Figure 31 b, figure Switching tube Q5 in any one figure in 32b, Figure 33 b and Figure 34 b, the first bus capacitor is Figure 19 b, Figure 20 b, Figure 21 b, is schemed 22b, Figure 23 b, Figure 24 b, Figure 25 b, Figure 26 b, Figure 27 b, Figure 28 b, Figure 29 b, Figure 30 b, Figure 31 b, Figure 32 b, Figure 33 b and Figure 34 b In any one figure in positive pole line capacitance, i.e. capacitance C5, the second bus capacitor for Figure 19 b, Figure 20 b, Figure 21 b, Figure 22 b, figure Appointing in 23b, Figure 24 b, Figure 25 b, Figure 26 b, Figure 27 b, Figure 28 b, Figure 29 b, Figure 30 b, Figure 31 b, Figure 32 b, Figure 33 b and Figure 34 b The negative busbar capacitance anticipated in a figure, i.e. capacitance C6.
In this way, it is operated in the PFC in the anode connection PFC rectification circuits of DC power supply under battery mode in PFC rectifiers In the case of inductance, during for negative busbar capacitive energy storage, in PFC inductive energy storages, the current potential of DC power cathode approaches In or equal to negative busbar output terminal voltage, during for negative busbar capacitive energy storage when PFC inductance releases energy it is straight Flow power cathode current potential be equal to negative busbar output terminal voltage, compared with the prior art in PFC rectification circuits for, work When being negative busbar capacitive energy storage under battery mode, the jump in potential amplitude reduction or even direct current of the cathode of DC power supply The no longer saltus step of the current potential of the cathode in source.The cathode connection PFC rectified currents of DC power supply in the case where PFC rectifiers are operated in battery mode In the case of PFC inductance in road, during for positive bus-bar capacitive energy storage, the DC power anode in PFC inductive energy storages Current potential be near or equal to positive pole line output terminal voltage, released during for positive bus-bar capacitive energy storage in PFC inductance During exoergic amount the current potential of DC power anode be equal to positive pole line output terminal voltage, compared with the prior art in PFC rectified currents For road, when being operated under battery mode as positive bus-bar capacitive energy storage, the jump in potential amplitude reduction of the anode of DC power supply, The even current potential no longer saltus step of the anode of DC power supply.
Further, control method provided in an embodiment of the present invention, further includes:
It is powered in the PFC rectifiers by DC power supply (under i.e. PFC rectifiers are operated in battery mode) and is described During the second bus capacitor energy storage in PFC rectifiers, the first main switch conducting is controlled, controls second main switch High frequency chopping, control the first rectifying tube high frequency chopping, and second main switch replace with first rectifying tube to be cut Wave;Second bus capacitor is removes first busbar in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than capacitance.
In this way, in the case that the ripple of the electric current on PFC inductance is identical, switching frequency can be reduced, so as to reduce out Close loss.
In addition, can certainly be powered in the PFC rectifiers by DC power supply, (i.e. PFC rectifiers are operated in battery mould Under formula) and during for the second bus capacitor energy storage in the PFC rectifiers, control the first main switch conducting, control institute The second main switch high frequency chopping is stated, controls the first rectifying tube shutdown.It can also be in the PFC rectifiers by DC power supply It powers (i.e. PFC rectifiers are operated under battery mode) and during for the second bus capacitor energy storage in the PFC rectifiers, controls The first main switch conducting is made, the second main switch shutdown is controlled, controls the first rectifying tube high frequency chopping.And And tank circuit when the second main switch shutdown, the first rectifying tube high frequency chopping, less than the second main switch high frequency chopping, the Tank circuit when one rectifying tube turns off, circuit is smaller, and conduction loss is also just smaller, and the efficiency of PFC rectifiers is also higher.
Further, control method provided in an embodiment of the present invention, further includes:In the PFC rectifiers by AC power It powers (i.e. PFC rectifiers are operated under utility mode) and during for the second bus capacitor energy storage in the PFC rectifiers, controls The second main switch high frequency chopping is made, controls the first rectifying tube high frequency chopping, and second main switch and institute State the first rectifying tube alternating chopper;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
In this way, in the case that the ripple of the electric current on PFC inductance is identical, switching frequency can be reduced, so as to reduce out Close loss.
In addition, can certainly be powered in the PFC rectifiers by AC power, (i.e. PFC rectifiers are operated in alternating current mould Under formula) and during for the second bus capacitor energy storage in the PFC rectifiers, control the second main switch high frequency chopping, control Make the first rectifying tube shutdown.Can also being powered in the PFC rectifiers by AC power, (i.e. PFC rectifiers are operated in city Under power mode) and during for the second bus capacitor energy storage in the PFC rectifiers, control the second main switch shutdown, control Make the first rectifying tube high frequency chopping.
Further, when the second rectifying tube in the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention is The switching tube of inverse parallel body diode is control provided in an embodiment of the present invention when switching the parallel-connection structure with diode Method further includes:
The first bus capacitor energy storage in the PFC rectification circuits are powered by AC power and are the PFC rectifiers When, the first main switch high frequency chopping is controlled, controls the second rectifying tube high frequency chopping, and first main switch With the second rectifying tube alternating chopper;Wherein, second rectifying tube is in two rectifying tubes in the PFC rectification circuits Rectifying tube in addition to first rectifying tube.
In addition, can certainly be powered in the PFC rectifiers by AC power, (i.e. PFC rectifiers are operated in alternating current mould Under formula) and during for the first bus capacitor energy storage in the PFC rectifiers, control the first main switch high frequency chopping, control Make the second rectifying tube shutdown.Can also being powered in the PFC rectifiers by AC power, (i.e. PFC rectifiers are operated in city Under power mode) and during for the first bus capacitor energy storage in the PFC rectifiers, control the first main switch shutdown, control Make the second rectifying tube high frequency chopping.
In addition, the high frequency chopping mentioned in the embodiment of the present invention, refers to chopping frequency higher than mains frequency, generally kHz More than.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of control device, since the device solves to ask The principle of topic is similar to aforementioned control method, therefore the implementation of the device may refer to the implementation of preceding method, repeats part not It repeats again.
A kind of control device provided in an embodiment of the present invention, it is as shown in figure 35, provided in an embodiment of the present invention for controlling PFC rectifiers, including:
First control module 351, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in The first bus capacitor energy storage when, control the first main switch shutdown;
Second control module 352, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in The first bus capacitor energy storage when, control the second main switch conducting;
Third control module 353, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in The first bus capacitor energy storage when, control the first rectifying tube high frequency chopping;
Wherein, first main switch be the PFC rectification circuits two main switches in first rectification The main switch that pipe is connected directly, second main switch be the PFC rectification circuits two main switches in except described Main switch other than first main switch;First bus capacitor is the positive pole line capacitance of the PFC rectification circuits and bears The bus capacitor being connected directly in bus capacitor with the first continued flow tube;First continued flow tube is in the PFC rectification circuits The continued flow tube being connected directly in two continued flow tubes with first rectifying tube.
Further, the first control module 351, is additionally operable to be powered by DC power supply in the PFC rectifiers and is described During the second bus capacitor energy storage in PFC rectifiers, the first main switch conducting is controlled;
Second control module 352 is additionally operable to be powered by DC power supply in the PFC rectifiers and for the PFC rectifiers In the second bus capacitor energy storage when, control the second main switch high frequency chopping;
Third control module 353, the second bus capacitor being additionally operable in the PFC rectifiers is the PFC rectifiers During energy storage, the first rectifying tube high frequency chopping, and second main switch and the first rectifying tube alternating chopper are controlled;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
Further, the second control module 352, is additionally operable to be powered by AC power in the PFC rectifiers and is described During the second bus capacitor energy storage in PFC rectifiers, the second main switch high frequency chopping is controlled;
Third control module 353, the second bus capacitor being additionally operable in the PFC rectifiers is the PFC rectifiers During energy storage, the first rectifying tube high frequency chopping, and second main switch and the first rectifying tube alternating chopper are controlled;
Second bus capacitor is removes described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than bus capacitor.
Further, when the second rectifying tube in the PFC rectification circuits in PFC rectifiers provided in an embodiment of the present invention is The switching tube of inverse parallel body diode is control provided in an embodiment of the present invention when switching the parallel-connection structure with diode Device as shown in figure 36, further includes the 4th control module 354;
4th control module 354, for being powered in the PFC rectification circuits by AC power and being the PFC rectifiers In the first bus capacitor energy storage when, control the second rectifying tube high frequency chopping;
First control module 351 is additionally operable to be powered by AC power in the PFC rectification circuits and for the PFC rectifications During the first bus capacitor energy storage in device, the first main switch high frequency chopping, and first main switch and institute are controlled State the second rectifying tube alternating chopper;
Wherein, second rectifying tube is that first rectifying tube is removed in two rectifying tubes in the PFC rectification circuits Rectifying tube in addition.
Through the above description of the embodiments, those skilled in the art can be understood that the embodiment of the present invention The mode of necessary general hardware platform can also be added to realize by software by hardware realization.Based on such reason Solution, the technical solution of the embodiment of the present invention can be embodied in the form of software product, which can be stored in one A non-volatile memory medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in, it is used including some instructions so that a meter It calculates machine equipment (can be personal computer, server or the network equipment etc.) and performs side described in each embodiment of the present invention Method.
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, module or stream in attached drawing Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can describe be divided according to embodiment It is distributed in the device of embodiment, respective change can also be carried out and be located in one or more devices different from the present embodiment.On The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (15)

1. a kind of PFC PFC rectifiers, which is characterized in that including PFC rectification circuits, the PFC rectification circuits packet It includes to be connected by the second rectifying tube and the first rectifying tube and forms the first branch, by the first main switch and the second main switch series connection shape Into the second branch, PFC inductance, positive pole line capacitance and negative busbar capacitance;One end of the PFC inductance is another as feeder ear End is connected with the tie point of second rectifying tube and first rectifying tube;The first branch and the second branch are simultaneously Connection, one end after parallel connection are connected by the second continued flow tube with one end of positive pole line capacitance, and the other end after parallel connection is continuous by first Flow tube is connected with one end of negative busbar capacitance;The other end of positive pole line capacitance is connected with the other end of negative busbar capacitance, and with The tie point of one main switch and the second main switch is connected;
The first rectifying tube in the PFC rectification circuits is the switching tube of inverse parallel body diode or is switch and diode Parallel-connection structure;
Wherein, first rectifying tube is two in PFC rectification circuits when PFC rectification circuits are operated under battery mode The rectifying tube being connected in rectifying tube with DC power supply;When wherein, under battery mode, the DC power supply is the PFC rectifications Device is powered.
2. PFC rectifiers as described in claim 1, which is characterized in that the first continued flow tube in the PFC rectification circuits is two Pole pipe or the switching tube for inverse parallel body diode;
Wherein, the first continued flow tube in the PFC rectification circuits be in two continued flow tubes in the PFC rectification circuits with it is described The continued flow tube that first rectifying tube is connected directly.
3. PFC rectifiers as claimed in claim 2, which is characterized in that when the first continued flow tube in the PFC rectification circuits is During diode, the PFC rectifiers further include the first capacitance, and first capacitance is in parallel with first continued flow tube.
4. PFC rectifiers as claimed in claim 2, which is characterized in that when the first continued flow tube in the PFC rectification circuits is During diode, the PFC rectifiers further include first switch, and the first switch is in parallel with first continued flow tube;
The first switch, for being the process of the first bus capacitor energy storage under being operated in battery mode in the PFC rectifiers It is closed during middle PFC inductance storage energy;First bus capacitor is the positive pole line capacitance and negative busbar of the PFC rectification circuits The bus capacitor being connected directly in capacitance with first continued flow tube;And for any in following two situations It disconnects:It is the second bus capacitor that the PFC rectifiers, which are operated in utility mode, the PFC rectifiers are operated under battery mode Energy storage;Second bus capacitor is female to remove described first in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than line capacitance.
5. PFC rectifiers as described in claim 1, which is characterized in that the second rectifying tube in the PFC rectification circuits is anti- The switching tube of body diode in parallel or the parallel-connection structure for switch and diode;Wherein, second rectifying tube is described Rectifying tube in two rectifying tubes in PFC rectification circuits in addition to first rectifying tube.
6. the PFC rectifiers as described in Claims 1 to 4 is any, which is characterized in that the PFC rectification circuits are whole for Single-phase PFC Current circuit is multiphase PFC rectification circuits.
7. a kind of uninterruptible power supply, which is characterized in that including any PFC PFC rectifications of claim 1~6 Device.
8. a kind of control method, for controlling the PFC rectifiers as described in claim 1~6 is any, which is characterized in that including:
Powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in the first bus capacitor energy storage when, control The shutdown of the first main switch is made, and controls the conducting of the second main switch and control the first rectifying tube high frequency chopping;
Wherein, first main switch be the PFC rectification circuits two main switches in it is straight with first rectifying tube Connected main switch is connect, second main switch is to remove described first in two main switches of the PFC rectification circuits Main switch other than main switch;First bus capacitor is the positive pole line capacitance and negative busbar of the PFC rectification circuits The bus capacitor being connected directly in capacitance with the first continued flow tube;First continued flow tube is two in the PFC rectification circuits The continued flow tube being connected directly in continued flow tube with first rectifying tube.
9. method as claimed in claim 8, which is characterized in that the method further includes:
Powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in the second bus capacitor energy storage when, control The first main switch conducting is made, the second main switch high frequency chopping is controlled, the first rectifying tube high frequency is controlled to cut Wave, and second main switch and the first rectifying tube alternating chopper;
Second bus capacitor is removes first busbar in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than capacitance.
10. method as claimed in claim 8, which is characterized in that the method further includes:
Powered in the PFC rectifiers by AC power and for the PFC rectifiers in the second bus capacitor energy storage when, control The second main switch high frequency chopping is made, controls the first rectifying tube high frequency chopping, and second main switch and institute State the first rectifying tube alternating chopper;
Second bus capacitor is removes first busbar in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than capacitance.
11. method as claimed in claim 8, which is characterized in that the second rectifying tube in the PFC rectification circuits is inverse parallel The switching tube of body diode or the parallel-connection structure for switch and diode, the method further include:
Powered in the PFC rectification circuits by AC power and for the PFC rectifiers in the first bus capacitor energy storage when, Control the first main switch high frequency chopping, control the second rectifying tube high frequency chopping, and first main switch with The second rectifying tube alternating chopper;
Wherein, second rectifying tube be in two rectifying tubes in the PFC rectification circuits in addition to first rectifying tube Rectifying tube.
12. a kind of control device, for controlling the PFC rectifiers as described in claim 1~6 is any, which is characterized in that packet It includes:
First control module, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in first During bus capacitor energy storage, control the first main switch shutdown;
Second control module, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in first During bus capacitor energy storage, control the second main switch conducting;
Third control module, for powered in the PFC rectifiers by DC power supply and for the PFC rectifiers in first During bus capacitor energy storage, the first rectifying tube high frequency chopping is controlled;
Wherein, first main switch be the PFC rectification circuits two main switches in it is straight with first rectifying tube Connected main switch is connect, second main switch is to remove described first in two main switches of the PFC rectification circuits Main switch other than main switch;First bus capacitor is the positive pole line capacitance and negative busbar of the PFC rectification circuits The bus capacitor being connected directly in capacitance with the first continued flow tube;First continued flow tube is two in the PFC rectification circuits The continued flow tube being connected directly in continued flow tube with first rectifying tube.
13. device as claimed in claim 12, which is characterized in that first control module is additionally operable in the PFC rectifications Device is powered by DC power supply and during for the second bus capacitor energy storage in the PFC rectifiers, controls first main switch Conducting;
Second control module is additionally operable to be powered by DC power supply in the PFC rectifiers and in the PFC rectifiers The second bus capacitor energy storage when, control the second main switch high frequency chopping;
The third control module, the second bus capacitor energy storage being additionally operable in the PFC rectifiers is the PFC rectifiers When, control the first rectifying tube high frequency chopping, and second main switch and the first rectifying tube alternating chopper;
Second bus capacitor is removes first busbar in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than capacitance.
14. device as claimed in claim 12, which is characterized in that second control module is additionally operable in the PFC rectifications Device is powered by AC power and during for the second bus capacitor energy storage in the PFC rectifiers, controls second main switch High frequency chopping;
The third control module, the second bus capacitor energy storage being additionally operable in the PFC rectifiers is the PFC rectifiers When, control the first rectifying tube high frequency chopping, and second main switch and the first rectifying tube alternating chopper;
Second bus capacitor is removes first busbar in the positive pole line capacitance of the PFC rectification circuits and negative busbar capacitance Bus capacitor other than capacitance.
15. device as claimed in claim 12, which is characterized in that the second rectifying tube in the PFC rectification circuits for it is anti-simultaneously The switching tube of conjuncted diode or the parallel-connection structure for switch and diode, described device further include the 4th control module;
4th control module, for powered in the PFC rectification circuits by AC power and for the PFC rectifiers in The first bus capacitor energy storage when, control the second rectifying tube high frequency chopping;
First control module is additionally operable to be powered by AC power in the PFC rectification circuits and for the PFC rectifiers In the first bus capacitor energy storage when, control the first main switch high frequency chopping, and first main switch with it is described Second rectifying tube alternating chopper;
Wherein, second rectifying tube be in two rectifying tubes in the PFC rectification circuits in addition to first rectifying tube Rectifying tube.
CN201410515253.2A 2014-09-29 2014-09-29 A kind of PFC rectifiers, uninterruptible power supply, control method and device Active CN105529942B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410515253.2A CN105529942B (en) 2014-09-29 2014-09-29 A kind of PFC rectifiers, uninterruptible power supply, control method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410515253.2A CN105529942B (en) 2014-09-29 2014-09-29 A kind of PFC rectifiers, uninterruptible power supply, control method and device

Publications (2)

Publication Number Publication Date
CN105529942A CN105529942A (en) 2016-04-27
CN105529942B true CN105529942B (en) 2018-06-19

Family

ID=55771986

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410515253.2A Active CN105529942B (en) 2014-09-29 2014-09-29 A kind of PFC rectifiers, uninterruptible power supply, control method and device

Country Status (1)

Country Link
CN (1) CN105529942B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107154620A (en) * 2017-05-16 2017-09-12 珠海格力电器股份有限公司 Electrical system and its control method based on common bus
TWI697181B (en) * 2018-10-22 2020-06-21 亞源科技股份有限公司 Dc-to-dc converter with a power factor correction function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101685975A (en) * 2008-09-27 2010-03-31 力博特公司 Method and device of soft start of bus voltage in uninterruptible power supply
CN103762630A (en) * 2014-01-03 2014-04-30 深圳科士达科技股份有限公司 Rectifier circuit and UPS system thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW591870B (en) * 2003-02-18 2004-06-11 Delta Electronics Inc Integrated converter with three-phase power factor correction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101685975A (en) * 2008-09-27 2010-03-31 力博特公司 Method and device of soft start of bus voltage in uninterruptible power supply
CN103762630A (en) * 2014-01-03 2014-04-30 深圳科士达科技股份有限公司 Rectifier circuit and UPS system thereof

Also Published As

Publication number Publication date
CN105529942A (en) 2016-04-27

Similar Documents

Publication Publication Date Title
CN105934874B (en) Power inverter and three-phase alternating current source device
CN102918757B (en) Power conversion device
CN104702093B (en) Bridgeless power factor circuit correcting circuit
CN102891611A (en) Five-level power converter, and control method and control device for five-level power converter
WO2014044089A1 (en) On-line uninterrupted power supply topology
CN102379081B (en) Power conversion apparatus
CN103782500B (en) Power-converting device
CN105529941B (en) A kind of PFC rectifiers and uninterruptible power supply
CN107785987A (en) On-Line UPS
WO2021232785A1 (en) Three-bridge arm topology apparatus, control method, and uninterrupted power supply system
CN102624258A (en) Non-isolated symmetric self-coupling 18-pulse rectification power supply system
CN107634659A (en) A kind of control method of expansion mixed type MMC operation areas
CN105529942B (en) A kind of PFC rectifiers, uninterruptible power supply, control method and device
CN109067219A (en) A kind of three-phase AC/DC conversion device and its control method
CN106329576A (en) Novel photovoltaic off-grid and grid-connected inverter
CN103959629A (en) Double rectifier for multi-phase contactless energy transfer system
CN104734264B (en) Line interaction uninterruptible power supply and its control method
CN108110796A (en) A kind of photovoltaic generating system of component polarity ground connection
CN201207618Y (en) Energy feedback device based on power unit series connection type high-voltage frequency transformer
WO2014086083A1 (en) Bidirectional converter topology
CN109390961A (en) A kind of power cell, power cell control system and its control method
CN103346607B (en) DC-AC conversion device and uninterrupted power supply(ups)
CN105048827B (en) Voltage doubling rectifing circuit
CN201985763U (en) Amplitude modulation high-frequency high-voltage power circuit used for electric precipitation
CN104734531B (en) Frequency converter

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: Columbo Road, Ohio, Dearborn 1050

Patentee after: Vitamin Corporation

Address before: Columbo Road, Ohio, Dearborn 1050

Patentee before: Libot Inc.

CP01 Change in the name or title of a patent holder