CN106411116B - A kind of Multi- Switch power factor correcting method, system and electronic equipment - Google Patents
A kind of Multi- Switch power factor correcting method, system and electronic equipment Download PDFInfo
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- CN106411116B CN106411116B CN201610493166.0A CN201610493166A CN106411116B CN 106411116 B CN106411116 B CN 106411116B CN 201610493166 A CN201610493166 A CN 201610493166A CN 106411116 B CN106411116 B CN 106411116B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies 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
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- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
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Abstract
A kind of Multi- Switch power factor correcting method of present invention offer, system and electronic equipment, Multi- Switch power factor correcting method include：Receive the input direct-current voltage signal derived from power circuit, output d. c. voltage signal and boost current signal；Logical process is carried out to form multiplex pulse width modulated drive signals to input direct-current voltage signal, output d. c. voltage signal and boost current signal；I-th tunnel pulse width modulated driving signal and i+1 road pulse width modulated driving signal phase shift predetermined angle, and decile duty ratio；I is more than or equal to 1；By the multiplex pulse width modulated drive signals input power circuit of formation, it is made to control the break-make of plural parallel stage power module with correcting power factors.The present invention realizes unity power factor correction, the ripple frequency for the inductance that doubled, and is conducive to the Miniaturization Design of inductance, while reducing the switching loss and conduction loss of power device, is conducive to the type selecting and radiating treatment of power device.
Description
Technical field
The invention belongs to converters technical field, it is related to a kind of bearing calibration and system, more particularly to one
Kind Multi- Switch power factor correcting method, system and electronic equipment.
Background technology
Single-phase power factor correcting device (PFC) widely used at present is single-phase active power factor corrector (APFC),
Include bridge type and without bridge type, has been widely applied to the prime electricity that frequency-conversion domestic electric appliances power circuit hands over straight AC-AC converter
Road is used as AC-DC converter.With the popularization and application of high-power frequency conversion air-conditioning etc., increasingly to the efficiency requirements of single-phase APFC
It improves.Since the single-phase APFC of no bridge has the advantages that simultaneously turn on, power device is few and conduction loss is low, and potential efficiency is higher, day
Benefit is more paid close attention to.But so far, the mainly traditional no single-phase APFC of bridge being applied.In order to improve power
Grade needs to take power device parallel connection and high frequency boost inductance measure.It is in parallel to use multiple power devices, power device is simultaneously
It is to increase potential power grade to join purpose.Even no document discloses, for power device parallel connection without the single-phase APFC of bridge, such as
What design driven scheme.
Overall performance or certain performances are improved for the application scenarios high efficiency APFC, or in order to improve, such as reduces boosting electricity
Feel size and simplify the design of power device IGBT, needs to be improved existing control technology.
The prior art has their own advantages, while there is also following just for there is the more power device parallel arrangements of the single-phase APFC of bridge
Shortcoming.For single-phase APFC, duty ratio is larger near network voltage zero passage, generally can be with 0.95 or so.Duty
It is smaller than near network voltage peak value, generally below 0.25 or so.It is released by power device speed, control stability, inductance
The factors such as discharge stream time, maximum duty cycle are not more than 0.95.In a complete power cycle, the substantially variation of duty ratio
Ranging from 0.20-0.95.As long as duty ratio d is more than 1/N, (such as N=2 just will appear IGBT recycling cross when then 0.5) d is more than
Continuous conduction state, not only emergent power device flows situation at this time, more seriously, always has a power device IGBT to lead
Logical, boost inductance does not have the exergonic time, it will boost inductance saturation and power device is caused finally to burn.Boosting electricity
Sense ripple is unable to frequency multiplication, and the design of boost inductance is particularly important, due to heavy and fever etc., is installed outside general plate.For
The miniaturization of single-phase APFC is installed in plate, boost inductance must minimize with low fever, must properly increase thus equivalent
Switching frequency improves ripple frequency.
The phase shift actuation techniques scheme disclosed in the prior art have it is clearly disadvantageous, cannot use for reference and be applied to no bridge list
In phase APFC.
Therefore, a kind of Multi- Switch power factor correcting method, system and electronic equipment how are provided, to solve the prior art
As long as (such as N=2 will emergent power device cycle intersection continuous conduction shape when then 0.5) d is more than more than 1/N for duty ratio in
State, not only emergent power device flows situation at this time, more seriously, always has a power device conducting, boost inductance not to have
The exergonic time, it will the defects of causing boost inductance saturation and power device to burn, it is real to become this field working
Person's technical problem urgently to be resolved hurrily.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of Multi- Switch PFCs
Method, system and electronic equipment, if for solve in the prior art duty ratio be more than 1/N (such as N=2, then d be more than 0.5) when,
Will emergent power device cycle intersect continuous conduction state, not only emergent power device flows situation at this time, more seriously,
Always there are a power device conducting, boost inductance there is no the exergonic time, it will to cause boost inductance saturation and power
The problem of device is burnt.
In order to achieve the above objects and other related objects, one aspect of the present invention provides a kind of Multi- Switch PFC side
Method, be applied to include plural parallel stage power module and the boost module that is connect with the power module of the plural parallel stage and with
The power circuit for the power output module that the power module is connected with boost module, the Multi- Switch power factor correcting method
Include the following steps：Receive the input direct-current voltage signal derived from the power circuit, output d. c. voltage signal and boosting electricity
Flow signal；Logical process is carried out with shape to the input direct-current voltage signal, output d. c. voltage signal and boost current signal
At multiplex pulse width modulated drive signals；I-th tunnel pulse width modulated driving signal drives with the modulation of i+1 road pulse width
Phase shift predetermined angle between signal, and decile duty ratio；I is more than or equal to 1；By the multiplex pulse width modulated drive signals of formation
The power circuit is inputted, it is made to control the break-make of plural parallel stage power module with correcting power factors.
In one embodiment of the invention, the logical process includes：To input direct-current voltage signal carry out logical process,
Logical process is carried out to output d. c. voltage signal and logical process is carried out to the boost current signal；Wherein, described to defeated
Entering d. c. voltage signal progress logical process includes：The input direct-current voltage signal is subjected to differential filtering；Extract differential filter
The effective voltage value of input direct-current voltage signal after wave；The effective voltage value of extraction is carried out square inverse to patrol to form first
Collect processing voltage signal；Described pair of output d. c. voltage signal carries out logical process and includes：By the output d. c. voltage signal
Carry out differential filtering；Differential filtered output d. c. voltage signal and reference voltage signal are subtracted each other to obtain first partially
Difference signal；PID processing is carried out to form the second logical process voltage signal to first deviation signal；It is described electric to the boosting
Stream signal carries out logical process：The boost current signal is subjected to differential filtering to form third logical process voltage letter
Number.
In one embodiment of the invention, the logical process further includes：By the first logical process voltage signal, difference
Move filtered input direct-current voltage signal, the second logical process voltage signal is multiplied to form the 4th logical process voltage letter
Number；The third logical process voltage signal and the 4th logical process voltage signal are subtracted each other to obtain the second deviation letter
Number, PID processing is carried out to form the 5th logical process signal to second deviation signal.
In one embodiment of the invention, the multiplex pulse width modulated drive signals of formation are inputted into the power
Circuit, make its control plural parallel stage power module break-make include with the step of correcting power factors：5th logical process is believed
Number N etc. points of processing are carried out, calculates the pulse signal after N deciles, the pulse signal after N deciles is compared with trapezoidal carrier signal
Compared with to export low and high level signal, pulse width modulation is carried out to the low and high level signal and is modulated with forming the roads N pulse width
Drive signal；Wherein, N is the even number more than or equal to 2.
Another aspect of the present invention provides a kind of Multi- Switch power factor calibration system, is applied to provide input direct-current voltage letter
Number, output d. c. voltage signal and boost current signal power circuit；The power circuit includes the power mould of plural parallel stage
Block, the boost module being connect with the power module of the plural parallel stage, and the work(that is connect with the power module and boost module
Rate output module；The Multi- Switch power factor calibration system includes：Processing module is connect with the power circuit, for connecing
Receive input direct-current voltage signal, output d. c. voltage signal and boost current signal；To the input direct-current voltage signal, defeated
Go out d. c. voltage signal and boost current signal carries out logical process to form multiplex pulse width modulated drive signals；I-th tunnel
Phase shift predetermined angle between pulse width modulated driving signal and i+1 road pulse width modulated driving signal, and decile duty
Than；I is more than or equal to 1；Signal control module is connect with the processing module, and the multiplex pulse width modulated will be formed is driven
Dynamic signal inputs the power circuit, it is made to control the break-make of plural parallel stage power module with correcting power factors.
In one embodiment of the invention, the processing module includes：First processing units connect with the power circuit
It connects, for carrying out logical process to input direct-current voltage signal；It is described to refer to input direct-current voltage signal progress logical process
The input direct-current voltage signal is subjected to differential filtering；Extract the effective voltage of differential filtered input direct-current voltage signal
Value；The effective voltage value of extraction is subjected to square inverse to form the first logical process voltage signal；Second processing unit, with institute
Power circuit connection is stated, for carrying out logical process to output d. c. voltage signal, described pair of output d. c. voltage signal carries out
Logical process refers to that the output d. c. voltage signal is carried out differential filtering；By differential filtered output d. c. voltage signal
Subtracted each other with reference voltage signal to obtain the first deviation signal；PID processing is carried out to form the to first deviation signal
Two logical process voltage signals；Third processing unit is connect with the power circuit, for being carried out to the boost current signal
Logical process；Described refers to that the boost current signal is carried out differential filtering to boost current signal progress logical process
To form third logical process voltage signal.
In one embodiment of the invention, the processing module further includes：Fourth processing unit, it is single with first processing
Member connected with second processing unit, be used for by the first logical process voltage signal, differential filtered input direct-current voltage signal,
Second logical process voltage signal is multiplied to form the 4th logical process voltage signal；At 5th processing unit, with the third
Reason unit is connected with fourth processing unit, is used for the third logical process voltage signal and the 4th logical process voltage signal
Subtracted each other to obtain the second deviation signal, PID processing is carried out to form the 5th logical process letter to second deviation signal
Number.
In one embodiment of the invention, the signal control module is used to the 5th logical process signal carrying out N deciles
Processing calculates the pulse signal after N deciles, is compared with trapezoidal carrier signal to form the roads N to the pulse signal after N deciles
Pulse width modulated driving signal；Wherein, N is the even number more than or equal to 2.
Another aspect of the invention provides a kind of electronic equipment, and the electronic equipment includes：Power circuit, for providing input
D. c. voltage signal, output d. c. voltage signal and boost current signal；The power circuit includes the power mould of plural parallel stage
Block, the boost module being connect with the power module of plural parallel stage, and the power output module that is connect with power module；With the work(
The controller of rate circuit connection, the controller includes the Multi- Switch power factor school as described in any one of claim 5-8
Positive system.
In one embodiment of the invention, every grade of power module includes M concatenated power devices；Wherein, M is more than or equal to
2。
In one embodiment of the invention, the electronic equipment further includes providing single phase ac for the electronic equipment
The power supply module of power supply, the power supply module include single phase alternating current power supply firewire and single phase alternating current power supply zero curve；The boosting mould
Block is connected with the single phase alternating current power supply firewire, and the single phase alternating current power supply zero curve is connected with the anode of a diode.
In one embodiment of the invention, the power module connects an electrolytic capacitor；Every grade of power module further includes string
The fly-wheel diode of connection and reversed fast recovery diode；The power module of the plural parallel stage with by multiple concatenated divider resistances
The input direct-current voltage module of composition is in parallel, and the input direct-current voltage module is for providing input direct-current voltage signal.
In one embodiment of the invention, the power output module is connected with the cathode of reversed fast recovery diode；
The power output module includes the output DC voltage circuit being connected in parallel with the electrolytic capacitor, the output DC voltage
Circuit includes multiple divider resistances being connected in series with, for providing output d. c. voltage signal
As described above, Multi- Switch power factor correcting method, system and the electronic equipment of the present invention, have below beneficial to effect
Fruit：
Multi- Switch power factor correcting method, system and electronic equipment of the present invention realize unity power factor school
Just, doubled the ripple frequency of inductance, is conducive to the Miniaturization Design of inductance, at the same reduce power device switching loss and
Conduction loss is conducive to the type selecting and radiating treatment of power device, simple in structure, novel in design.
Description of the drawings
Fig. 1 is shown as theory structure schematic diagram of the electronic equipment of the present invention in an embodiment.
Fig. 2 is shown as theory structure schematic diagram of the electronic equipment of the present invention in an embodiment.
Fig. 3 is shown as theory structure schematic diagram of the Multi- Switch power factor calibration system of the present invention in an embodiment.
Fig. 4 is shown as present invention design sketch compared with the prior art.
Fig. 5 is shown as flow diagram of the Multi- Switch power factor correcting method of the present invention in an embodiment.
Component label instructions
1 electronic equipment
11 power circuits
12 controllers
13 Multi- Switch power factor calibration systems
14 processing modules
15 signal control modules
110 power supply modules
111 boost modules
112 rectification modules
113 power modules
114 input direct-current voltage modules
115 power output modules
141 first processing units
142 second processing units
143 third processing units
144 fourth processing units
145 the 5th processing units
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that the diagram provided in following embodiment only illustrates the basic structure of the present invention in a schematic way
Think, component count, shape and size when only display is with related component in the present invention rather than according to actual implementation in schema then
Draw, when actual implementation kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout kenel
It is likely more complexity.
Embodiment one
The present embodiment provides a kind of electronic equipment, the electronic equipment includes：
Power circuit, for providing input direct-current voltage signal, output d. c. voltage signal and boost current signal；Institute
State the power module that power circuit includes plural parallel stage, the boost module being connect with the power module of plural parallel stage, and and power
The power output module that module is connected with boost module；
The controller being connect with the power circuit, the controller include Multi- Switch power factor calibration system.
The electronic equipment provided the present embodiment below with reference to diagram is described in detail.It please refers to Fig.1 and Fig. 2,
It is respectively indicated as theory structure schematic diagram and electronic equipment circuit diagram in an embodiment in of the electronic equipment in an embodiment.
As depicted in figs. 1 and 2, the electronic equipment 1 includes power circuit 11 and controller 12, and the controller 12 includes Multi- Switch work(
Rate factor correcting system 13.
In the present embodiment, the power circuit 11 is for providing input direct-current voltage signal Uin, output DC voltage letter
Number UoutAnd boost current signal iL.The boosting that the power circuit 11 includes power supply module 110, connect with power supply module 110
Module 111, the rectification module 112 being connect with the boost module 111, connect with the boost module 111 and rectification module 112
Plural parallel stage power module 113, connect with the power module 113 input direct-current voltage module 114, with the boosting
The power output module 115 that module 111 and power module 113 connect.In the present embodiment, the power circuit 11 is additionally operable to connect
Single phase ac input voltage and the multiplex pulse width modulated drive signals from the controller 12 are received, power factor school is carried out
Just, to obtain required DC output voltage.
The power supply module 110 is used to provide single phase alternating current power supply for the electronic equipment.In the present embodiment, the confession
The running parameter of power supply 110 is 180V~264V, rated voltage 220V, rated frequency 50Hz, and rated power 3.5kW is specified
Electric current 20A, switching frequency 40kHz.The power supply module 110 provides firewire input point ACL and zero curve input point ACN.
The boost module 111 being connect with the power supply module 110 is for generating boost current signal iL.In the present embodiment
In, it is 350 μ H/20A that the boost module 111, which uses boost inductance L, running parameter,.
The rectification module 112 being connect with the power supply module 110 and boost module 111 is used for the power supply module 110
The AC power of output is rectified into DC power supply.In the present embodiment, the rectification module 112 includes the first diode D1 and the
Two diode D2.
In the power module 113 of the plural parallel stage every grade of power module include M concatenated power devices and with every grade
The electrolytic capacitor E1 of power module parallel, wherein M is more than or equal to 2.In the present embodiment, the power module of the plural parallel stage
113 be the power module 113 of two-stage parallel connection, and every grade of power module 113 includes 2 concatenated power device IGBT, i.e. power mould
Block 113 includes 2 concatenated power devices 1 and power device 3, and power module 113 includes 2 concatenated power devices 2 and work(
Rate device 4, the power device use the first insulated gate bipolar transistor S1, the second insulated gate bipolar transistor S2, the
Three insulated gate bipolar transistor S3, the 4th insulated gate bipolar transistor S4 and it is connected to insulated gate bipolar transistor S1,
Power sub-circuit 1 in the grid G of S2, S3, S4, power sub-circuit 2, power sub-circuit 3, power sub-circuit 4.In the present embodiment
In, the running parameter of the power device IGBT is IKW40N60H3,40A/600V/100 DEG C.In the present embodiment, the electricity
The anode for solving capacitance E1 forms the cathode formation cathode voltage output end-DCN of cathode voltage output end+DCP, electrolytic capacitor E1.
As shown in Fig. 2, the power circuit 11 further include the first fly-wheel diode FWD1 being connect with power module 113 and
The reversed fast recovery diode FRD2 of the reversed fast recovery diode FRD1 and second of second fly-wheel diode FWD2 and first.At this
In embodiment, the running parameter of the first fly-wheel diode FWD1 and the second fly-wheel diode FWD2 are APT30DQ60BG, 30A/
600V/100 DEG C, the first reversed fast recovery diode FRD2 of the reversed reversed fast recovery diode FRD1 and second of fast recovery diode
Running parameter be FFH30S60S, 100deg, 30A/600V.In the present embodiment, the power module 113 passes through the mould that boosts
Block 111, the first fly-wheel diode FWD1 and the reversed fast recovery diode FRD1 and second of the second fly-wheel diode FWD2 and first
Reversed fast recovery diode FRD2 and the pulse width modulated driving signal by the Multi- Switch power factor calibration system 13
It controls and realizes break-make.In the present embodiment, the first fly-wheel diode FWD1 and the second fly-wheel diode FWD2 be just
First divider resistance R1 of the pole connection one for detecting the boost current signal.
The input direct-current voltage module 114 is connect with described N grades power module parallel in parallel.The input dc power
Die block 114 is for providing input direct-current voltage signal Uin.The input direct-current voltage module 114 is by multiple concatenated partial pressure electricity
Resistance composition.In the present embodiment, the input direct-current voltage module 114 includes the second divider resistance R2, third divider resistance R3,
4th divider resistance R4.Since the switch power factor correcting system 12 is only applicable to detection light current, then according to this characteristic
By the second divider resistance R2, the proportional setting of resistance value of third divider resistance R3, the 4th divider resistance R4.For example, partial pressure
The resistance value of resistance R2, R3, R4 is respectively：360k, 360k, 5.1k, described in the switch power factor correcting system 12 only acquires
Input direct-current voltage signal U on 4th divider resistancein。
The power output module 115 is connect with the power module 113, for providing output d. c. voltage signal Uout。
As shown in Fig. 2, the power output module 115 is located between cathode voltage output end+DCP and cathode voltage output end-DCN.
The power output module 115 is made of multiple concatenated resistance.In the present embodiment, the power output module 115 includes
5th divider resistance R5, the 6th divider resistance R6, the 7th divider resistance R7.Only due to the switch power factor correcting system 12
Suitable for detecting light current, then according to this characteristic by the 5th divider resistance R5, the 6th divider resistance R6, the 7th divider resistance
The proportional setting of resistance value of R7.For example, the resistance value of divider resistance R5, R6, R7 are respectively：750k, 750k, 21.6k, the switch
Power factor calibration system 12 only acquires the output d. c. voltage signal U on the 7th divider resistanceout。
In the preferred embodiment of the present invention, firewire input point ACL is connected with one end of boost inductance L, rises
The other end of voltage inductance L is connected with the anode of the first reversed fast recovery diode FRD1 in power module 113, and first is reversed
The cathode of fast recovery diode FRD1 is connected with the anode of electrolytic capacitor E1, the cathode ground connection of electrolytic capacitor E1.5th partial pressure
One end of resistance R5 is connected to the other end and the 6th divider resistance R6 of cathode voltage output end+DCP, the 5th divider resistance R5
One end is connected, and the other end of the 6th divider resistance R6 is connected with one end of the 7th divider resistance, the 7th divider resistance it is another
One end is connected to cathode voltage output end-DCN.With continued reference to Fig. 2, anode and the firewire input point ACL phases of the first diode D1
Connection, the cathode of the first diode D1 is connected with one end of the second divider resistance R2, the other end of the second divider resistance R2 and
One end of third divider resistance R3 is connected, and the other end of third divider resistance R3 and an end line of the 4th divider resistance R4 connect
It connects, the other end ground connection of the 4th divider resistance R4.The anode of second diode D2 is connected with zero curve input point ACN, and the two or two
The cathode of pole pipe D2 is connected with the cathode of the first diode D1.First insulated gate bipolar transistor S1, the second insulated gate are double
The collector of polar transistor S2 be connected with the other end of boost inductance L (i.e. with the first reversed fast recovery diode FRD1
Anode be connected), third insulated gate bipolar transistor S3, the 4th insulated gate bipolar transistor S4 collector and second
The anode of reversed fast recovery diode FRD2 is connected, and the first insulated gate bipolar transistor S1, the second insulated gate bipolar are brilliant
Body pipe S2, third insulated gate bipolar transistor S3, the emitter of the 4th insulated gate bipolar transistor S4 and cathode voltage are defeated
Outlet-DCN is connected, and the first insulated gate bipolar transistor S1, the second insulated gate bipolar transistor S2, third insulated gate are double
Polar transistor S3, the 4th insulated gate bipolar transistor S4 grid on be connected separately with power sub-circuit 1, power sub-circuit
2, power sub-circuit 3, power sub-circuit 4, the power sub-circuit 1, power sub-circuit 2, power sub-circuit 3, power sub-circuit 4
For receiving the 2 tunnel pulse width modulated driving signals from Multi- Switch power factor calibration system 13.First fly-wheel diode
The anode of FWD1 and the second fly-wheel diode FWD2 is connected with one end of the first divider resistance R1, and the first divider resistance R1's is another
One end is grounded, and the cathode of the first fly-wheel diode FWD1 is connected to the first insulated gate bipolar transistor S1 and the second insulated gate is double
On the collector of polar transistor S2, the cathode of the second fly-wheel diode FWD2 is connected to third insulated gate bipolar transistor S3
On the collector of the 4th insulated gate bipolar transistor S4.
The present embodiment also provides the Multi- Switch power factor calibration system 13 being connect with the power circuit 11.It is described to open more
Closing power factor calibration system includes：
Processing module is connect with the power circuit, for receiving input direct-current voltage signal, output DC voltage letter
Number and boost current signal；The input direct-current voltage signal, output d. c. voltage signal and boost current signal are carried out
Logical process is to form the roads N pulse width modulated driving signal；I-th tunnel pulse width modulated driving signal and the pulse of i+1 road
Phase shift predetermined angle between width modulated drive signals, i.e. 1/N switch periods, and decile duty ratio；I is more than or equal to 1；
Signal control module is connect with the processing module, to the multiplex pulse width modulated drive signals that will be formed
The power circuit is inputted, it is made to control the break-make of N grades of parallel power modules with correcting power factors.
The Multi- Switch power factor calibration system described in the present embodiment is described in detail below with reference to diagram.It please join
Fig. 3 is read, theory structure schematic diagram of the Multi- Switch power factor calibration system in an embodiment is shown as.As shown in Figure 1, Figure 2 and Fig. 3
Shown, the Multi- Switch power factor calibration system 13 includes processing module 14 and signal control module 15.
The processing module being connect with the power circuit is used to receive the input direct-current voltage letter of the power circuit input
Number Uin, output d. c. voltage signal UoutAnd boost current signal iL；To the input direct-current voltage signal, output DC voltage
Signal and boost current signal carry out logical process to form the roads N pulse width modulated driving signal；I-th tunnel pulse width tune
Phase shift predetermined angle between drive signal processed and i+1 road pulse width modulated driving signal, i.e. 1/N switch periods, and decile
Duty ratio；I is more than or equal to 1.In the present embodiment, since power module is 2 grades of parallel power modules, so N is 2.In this reality
It applies in example, the processing module 14 includes：First processing units 141, second processing unit 142, third processing unit 143,
Four processing units 144, the 5th processing unit 145.
It is connect with the power circuit, specifically connect with input direct-current voltage module 114 in the power circuit
One processing unit 141 carries out logical process for acquiring the input direct-current voltage signal, to input direct-current voltage signal.At this
In embodiment, the first processing units include differential filter 1, true rms circuit, square reciprocal circuit.Described pair of input is straight
It refers to that the input direct-current voltage signal is carried out differential filtering that stream voltage signal, which carries out logical process,；It extracts differential filtered
The effective voltage value of input direct-current voltage signal；The effective voltage value of extraction is subjected to square inverse to form the first logical process
Voltage signal；
Connect with the power circuit, specifically with power output module 115 is connect in the power circuit at second
Reason unit 142 carries out logical process for acquiring the output d. c. voltage signal, to output d. c. voltage signal.In this implementation
In example, the second processing unit includes differential filter 2, and (PID regulator refers to excessively program-controlled for subtracter 1, PID regulator 1
In system, in the ratio (P) of deviation, integral (I) and the controller that is controlled of differential (D)) described pair export d. c. voltage signal
It refers to that the output d. c. voltage signal is carried out differential filtering to carry out logical process；By differential filtered output DC voltage
Signal and reference voltage signal UrefSubtracted each other to obtain the first deviation signal；To first deviation signal carry out PID processing with
Form the second logical process voltage signal.
It is connect with the power circuit, the third processing unit 143 specifically being connect with first resistor in the power circuit
For carrying out logical process to the boost current signal.In the present embodiment, the third processing module 143 includes differential filter
Wave device 3.It refers to that the boost current signal is carried out differential filtering to be formed to carry out logical process to the boost current signal
Third logical process voltage signal.
The fourth processing unit 144 being connect with the first processing units 141 and second processing unit 142 is used for first
Logical process voltage signal, differential filtered input direct-current voltage signal, the second logical process voltage signal are multiplied to be formed
4th logical process voltage signal.In the present embodiment, the fourth processing unit 144 is a multiplier.
The 5th processing unit 145 being connect with the third processing unit 143 and fourth processing unit 144 is used for will be described
Third logical process voltage signal and the 4th logical process voltage signal are subtracted each other to obtain the second deviation signal, to described
Two deviation signals carry out PID processing to form the 5th logical process signal.In the present embodiment, the 5th processing unit 145
Including subtracter 2 and PID regulator 2.
The signal control module 15 being connect with the processing module 14 modulates driving to the two-way pulse width that will be formed
Signal inputs the power circuit, it is made to control the break-make of N grades of parallel power modules with correcting power factors.
Specifically, the 5th logical process signal is carried out two decile processing by the signal control module 15, and duty ratio halves,
The pulse signal after two deciles is calculated to obtain identical pulse width, to after 2 deciles pulse signal and trapezoidal carrier signal
Be compared with export low and high level signal (in the present embodiment, if exporting high ordinary mail number, be connected, if output low level,
Cut-off), pulse width modulation is carried out to form two-way pulse width modulated driving signal to the low and high level signal.In this reality
It applies in example, the signal control module 15 includes divider, pulsewidth calculator 1 and 2, pulse-modulator 1 and 2.
In the present embodiment, power circuit 11：220V AC powers by boost inductance be applied to there are two bridge arm constitute
Without the single-phase APFC power circuits of bridge.Power device IGBT S1 receive the two-way phase shift from control program with S2, S3 and S4
The driving pulse of 180 ° and decile duty ratio, is sequentially connected, turn-on time equal length, makes boosting in a switch periods
Inductance generates ripple current, stores energy and releases energy, difference, that is, output power of energy is transmitted to electrolytic capacitor E1, for rear class
Circuit uses.The duty ratio of IGBT S1 and S2, S3 and S4 can also be designed to variation of the respective turn-on time with controlled quentity controlled variable
And change, but divide duty ratio this principle according to Dynamic Execution etc., it is possible thereby to increase dynamic responding speed.IGBT S1 with
S2 uses 180 ° of phase shift and the driving of decile duty ratio, only works in network voltage positive half cycle break-make.IGBT S3 and S4 is using shifting
The driving of 180 ° of phase and decile duty ratio only works in network voltage negative half period break-make.IGBT S1 and S3 receives same driving
Signal, only has the work of S1 break-makes in positive half cycle, there was only the work of S3 break-makes in positive half cycle.IGBT S2 and S4 receives same driving
Signal, only has the work of S2 break-makes in positive half cycle, there was only the work of S4 break-makes in positive half cycle.
Controller 12 is used to receive input direct-current voltage signal, output DC voltage letter after the rectification from power circuit
Number and boost inductor current signal.Using outer voltage, the output of output voltage is obtained by subtracter 1 and PID regulator 1
Amount, the output quantity of the Voltage loop are responsible for obtaining desired DC output voltage.The output quantity and input voltage signal of outer voltage,
Product is obtained after square reciprocal multiplication of input voltage signal, the product and the inductive current come by the detection of differential filter 3
Signal is subtracted each other by subtracter 2, and obtained difference obtains the controlled quentity controlled variable of current inner loop using PID regulator 2.The control of current inner loop
Amount processed halves in process divided by 2 programs, duty ratio, after pulsewidth calculation procedure, obtains identical pulse width, finally passes through
Pulse shaping program obtains two-way difference half switch periods (switch periods are 360 degree), i.e., 180 ° of PWM driving letters
Number, the input terminal for four drivers being sent into power circuit reaches power factor by the break-make of four power device IGBT
Correct purpose.
Referring to Fig. 4, being shown as present invention design sketch compared with the prior art.The work of electronic equipment 1 described in the present embodiment
When making, the duty ratio of every power device only has 1/2 when original single-stage APFC, the conduction loss of every power device there was only original
1/2 come.In the case where switching frequency is constant, the on-off times and switching loss of every power device are constant, but boost
The ripple frequency of inductance increases to original 2 times, and the design of boost inductance can be greatly simplified.If reducing switch frequency
Rate, then the on-off times of every power device and switching loss can decline, the ripple frequency of boost inductance can remain unchanged.
The power consumption of power device is disperseed, and type selecting can be simplified.Trapezoidal carrier program provides the difference trapezoidal load of 180 two-way
Wave no matter total duty ratio is much, can realize that boost inductance ripple frequency doubles, without burning work(under any circumstance
Rate device.
Electronic equipment and Multi- Switch power factor calibration system described in the present embodiment realize unity power factor correction, times
The ripple frequency for having increased inductance, is conducive to the Miniaturization Design of inductance, while reducing switching loss and the conducting of power device
Loss, is conducive to the type selecting and radiating treatment of power device, simple in structure, novel in design.
Embodiment two
The present embodiment provides a kind of Multi- Switch power factor correcting method, be applied to include plural parallel stage power module,
The boost module being connect with the power module of the plural parallel stage and the power being connect with the power module and boost module
The power circuit of output module.Show referring to Fig. 5, being shown as flow of the Multi- Switch power factor correcting method in an embodiment
It is intended to.As shown in figure 5, the Multi- Switch power factor correcting method includes the following steps：
S1 receives the input direct-current voltage signal derived from the power circuit, output d. c. voltage signal and boost current
Signal；
S2 carries out logical process to the input direct-current voltage signal, output d. c. voltage signal and boost current signal
To form multiplex pulse width modulated drive signals；I-th tunnel pulse width modulated driving signal is modulated with i+1 road pulse width
Phase shift predetermined angle between drive signal, i.e. 1/N switch periods, and decile duty ratio；I is more than or equal to 1.In the present embodiment,
The power module of plural parallel stage is 2 grades of power modules in parallel.Switch periods are 360 degree, then the 1st tunnel pulse width modulation is driven
1/2 switch periods of dynamic signal and the 2nd tunnel pulse width modulated driving signal phase shift, i.e. phase shift 180 degree.In the present embodiment, institute
Stating logical process includes：To input direct-current voltage signal carry out logical process, to output d. c. voltage signal carry out logical process,
And logical process is carried out to the boost current signal；
Wherein, described to include to input direct-current voltage signal progress logical process：By the input direct-current voltage signal into
The differential filtering of row；Extract the effective voltage value of differential filtered input direct-current voltage signal；By the effective voltage value of extraction into
Row square inverse is to form the first logical process voltage signal；
Described pair of output d. c. voltage signal carries out logical process and includes：The output d. c. voltage signal is carried out differential
Filtering；Differential filtered output d. c. voltage signal and reference voltage signal are subtracted each other to obtain the first deviation signal；
PID processing is carried out to form the second logical process voltage signal to first deviation signal；
It is described to include to boost current signal progress logical process：The boost current signal is subjected to differential filtering
To form third logical process voltage signal.
By the first logical process voltage signal, differential filtered input direct-current voltage signal, the second logical process
Voltage signal is multiplied to form the 4th logical process voltage signal；
The third logical process voltage signal and the 4th logical process voltage signal are subtracted each other to obtain second partially
Difference signal carries out PID processing to form the 5th logical process signal to second deviation signal.
The multiplex pulse width modulated drive signals of formation are inputted the power circuit, it are made to control plural parallel stage by S3
The break-make of power module is with correcting power factors.Specifically, the 5th logical process signal is subjected to two decile processing, calculates two etc.
Pulse signal after point, the pulse signal after two deciles is compared to export low and high level signal with trapezoidal carrier signal,
Pulse width modulation is carried out to form 2 tunnel pulse width modulated driving signals to the low and high level signal.By 2 road two-way differences
The pulse width modulated driving signal of 180 degree is sent into the input terminal of four drivers in power circuit, by four power devices
The break-make of part IGBT reaches PFC purpose.
In conclusion Multi- Switch power factor correcting method of the present invention, system and electronic equipment realize specific work
Rate factor correcting, the ripple frequency for the inductance that doubled is conducive to the Miniaturization Design of inductance, while reducing opening for power device
Loss and conduction loss are closed, the type selecting and radiating treatment of power device are conducive to, it is simple in structure, it is novel in design.So the present invention
It effectively overcomes various shortcoming in the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (13)
1. a kind of Multi- Switch power factor correcting method, which is characterized in that be applied to include plural parallel stage power module and with
The boost module of the power module connection of the plural parallel stage and the power output being connect with the power module and boost module
The power circuit of module, the Multi- Switch power factor correcting method include the following steps：
Receive the input direct-current voltage signal derived from the power circuit, output d. c. voltage signal and boost current signal；
Logical process is carried out to be formed to the input direct-current voltage signal, output d. c. voltage signal and boost current signal
Multiplex pulse width modulated drive signals；I-th tunnel pulse width modulated driving signal and i+1 road pulse width modulation driving letter
Phase shift predetermined angle between number, and decile duty ratio；I is more than or equal to 1；
The multiplex pulse width modulated drive signals of formation are inputted into the power circuit, it is made to control plural parallel stage power module
Break-make with correcting power factors.
2. Multi- Switch power factor correcting method according to claim 1, it is characterised in that：The logical process includes：
Logical process is carried out to input direct-current voltage signal, carries out logical process to output d. c. voltage signal and to boosting electricity
It flows signal and carries out logical process；
Wherein, described to include to input direct-current voltage signal progress logical process：It is poor that the input direct-current voltage signal is carried out
Dynamic filtering；Extract the effective voltage value of differential filtered input direct-current voltage signal；The effective voltage value of extraction is put down
Side's inverse is to form the first logical process voltage signal；
Described pair of output d. c. voltage signal carries out logical process and includes：The output d. c. voltage signal is subjected to differential filter
Wave；Differential filtered output d. c. voltage signal and reference voltage signal are subtracted each other to obtain the first deviation signal；It is right
First deviation signal carries out PID processing to form the second logical process voltage signal；
It is described to include to boost current signal progress logical process：The boost current signal is subjected to differential filtering with shape
At third logical process voltage signal.
3. Multi- Switch power factor correcting method according to claim 2, it is characterised in that：The logical process is also wrapped
It includes：
By the first logical process voltage signal, differential filtered input direct-current voltage signal, the second logical process voltage
Signal multiplication is to form the 4th logical process voltage signal；
The third logical process voltage signal and the 4th logical process voltage signal are subtracted each other to obtain the second deviation letter
Number, PID processing is carried out to form the 5th logical process signal to second deviation signal.
4. Multi- Switch power factor correcting method according to claim 3, it is characterised in that：By the multichannel arteries and veins of formation
Rush width modulated drive signals and input the power circuit, make its control the break-make of plural parallel stage power module with corrected power because
Several steps include：5th logical process signal is subjected to N etc. points of processing, the pulse signal after N deciles is calculated, after N deciles
Pulse signal be compared with trapezoidal carrier signal to export low and high level signal, pulse is carried out to the low and high level signal
Width modulated is to form the roads N pulse width modulated driving signal；Wherein, N is the even number more than or equal to 2.
5. a kind of Multi- Switch power factor calibration system, which is characterized in that be applied to provide input direct-current voltage signal, output directly
Flow the power circuit of voltage signal and boost current signal；The power circuit includes the power module of plural parallel stage, and described
The boost module of the power module connection of plural parallel stage, and the power output mould that is connect with the power module and boost module
Block；The Multi- Switch power factor calibration system includes：
Processing module is connect with the power circuit, for receive input direct-current voltage signal, output d. c. voltage signal and
Boost current signal；The input direct-current voltage signal, output d. c. voltage signal and boost current signal are carried out at logic
Reason is to form multiplex pulse width modulated drive signals；I-th tunnel pulse width modulated driving signal and i+1 road pulse width tune
Phase shift predetermined angle between drive signal processed, and decile duty ratio；I is more than or equal to 1；
Signal control module is connect with the processing module, to the multiplex pulse width modulated drive signals input that will be formed
The power circuit makes it control the break-make of plural parallel stage power module with correcting power factors.
6. Multi- Switch power factor calibration system according to claim 5, it is characterised in that：The processing module includes：
First processing units are connect with the power circuit, for carrying out logical process to input direct-current voltage signal；It is described right
It refers to that the input direct-current voltage signal is carried out differential filtering that input direct-current voltage signal, which carries out logical process,；Extract differential filter
The effective voltage value of input direct-current voltage signal after wave；The effective voltage value of extraction is carried out square inverse to patrol to form first
Collect processing voltage signal；
Second processing unit is connect with the power circuit, described right for carrying out logical process to output d. c. voltage signal
It refers to that the output d. c. voltage signal is carried out differential filtering that output d. c. voltage signal, which carries out logical process,；By differential filtering
Output d. c. voltage signal afterwards is subtracted each other with reference voltage signal to obtain the first deviation signal；To first deviation signal
PID processing is carried out to form the second logical process voltage signal；
Third processing unit is connect with the power circuit, for carrying out logical process to the boost current signal；It is described right
It refers to that the boost current signal is carried out differential filtering to form third logic that the boost current signal, which carries out logical process,
Handle voltage signal.
7. Multi- Switch power factor calibration system according to claim 6, it is characterised in that：The processing module is also wrapped
It includes：
Fourth processing unit is connect with the first processing units and second processing unit, is used for the first logical process voltage
Signal, differential filtered input direct-current voltage signal, the second logical process voltage signal are multiplied to form the 4th logical process
Voltage signal；
5th processing unit is connect with the third processing unit and fourth processing unit, is used for the third logical process
Voltage signal and the 4th logical process voltage signal are subtracted each other to obtain the second deviation signal, to second deviation signal into
Row PID processing is to form the 5th logical process signal.
8. Multi- Switch power factor calibration system according to claim 7, it is characterised in that：The signal control module is used
In the 5th logical process signal is carried out N etc. points of processing, calculate the pulse signal after N deciles, to after N deciles pulse signal with
Trapezoidal carrier signal is compared to form the roads N pulse width modulated driving signal；Wherein, N is the even number more than or equal to 2.
9. a kind of electronic equipment, which is characterized in that the electronic equipment includes：
Power circuit, for providing input direct-current voltage signal, output d. c. voltage signal and boost current signal；The work(
Rate circuit includes the power module of plural parallel stage, the boost module being connect with the power module of plural parallel stage, and and power module
The power output module of connection；
The controller being connect with the power circuit, the controller include that as described in any one of claim 5-8 open more
Close power factor calibration system.
10. electronic equipment according to claim 9, it is characterised in that：Every grade of power module includes M concatenated power devices
Part；Wherein, M is more than or equal to 2.
11. electronic equipment according to claim 9, it is characterised in that：The electronic equipment further include be the electricity
Sub- equipment provides the power supply module of single phase alternating current power supply, and the power supply module includes single phase alternating current power supply firewire and single-phase alternating current
Source zero curve；The boost module is connected with the single phase alternating current power supply firewire, the single phase alternating current power supply zero curve and one or two poles
The anode of pipe is connected.
12. electronic equipment according to claim 9, it is characterised in that：The power module connects an electrolytic capacitor；Every grade
Power module further includes concatenated fly-wheel diode and reversed fast recovery diode；The power module of the plural parallel stage with by more
The input direct-current voltage module of a concatenated divider resistance composition is in parallel, and the input direct-current voltage module is straight for providing input
Flow voltage signal.
13. electronic equipment according to claim 12, it is characterised in that：The power output module and reversed fast recovery two
The cathode of pole pipe is connected；The power output module includes the output direct current piezoelectricity being connected in parallel with the electrolytic capacitor
Road, the output DC voltage circuit includes multiple divider resistances being connected in series with, for providing output d. c. voltage signal.
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| CN103840652A (en) * | 2012-11-20 | 2014-06-04 | 上海儒竞电子科技有限公司 | Composite power factor correction circuit |
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| US9214854B2 (en) * | 2014-02-18 | 2015-12-15 | Voltronics Power Technology Corp. | Total harmonic current distortion control circuit and method thereof |
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| CN102255547A (en) * | 2011-07-17 | 2011-11-23 | 西南交通大学 | Voltage-sharing control circuit of diode-clamped multilevel converter DC (direct current) capacitor and voltage-sharing control method thereof |
| CN103840652A (en) * | 2012-11-20 | 2014-06-04 | 上海儒竞电子科技有限公司 | Composite power factor correction circuit |
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Address after: Room 1101-163, 323 Guoding Road, Yangpu District, Shanghai 200433 Patentee after: Shanghai Rujing Intelligent Control Technology Co.,Ltd. Address before: Room 1101-163, 323 Guoding Road, Yangpu District, Shanghai 200433 Patentee before: RUKING EMERSON CLIMATE TECHNOLOGIES (SHANGHAI) Co.,Ltd. |