CN107104589A - Pfc circuit and transducer air conditioning - Google Patents
Pfc circuit and transducer air conditioning Download PDFInfo
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- CN107104589A CN107104589A CN201710531630.5A CN201710531630A CN107104589A CN 107104589 A CN107104589 A CN 107104589A CN 201710531630 A CN201710531630 A CN 201710531630A CN 107104589 A CN107104589 A CN 107104589A
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Classifications
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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
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
-
- 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
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4283—Arrangements for improving power factor of AC input by adding a controlled rectifier in parallel to a first rectifier feeding a smoothing capacitor
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention provides a kind of pfc circuit and transducer air conditioning, include constituting rectification module by the branch circuit parallel connection that diode is composed in series with the IGBT pipes for carrying fly-wheel diode by setting two, and reactor connects the input of AC power, reactor, rectification module are connected in ac power supply circuit, are connected in parallel on rectification module output end after the first electric capacity and the series connection of the second electric capacity and the common contact of the first electric capacity and the second electric capacity connection ac circuit.The pfc circuit of the embodiment of the present invention is operationally, its current loop is only by a diode or the fly-wheel diode of an IGBT pipe, by each diode of two rectifier bridge stacks the need for compared with the prior art, the working quantity of diode is greatly reduced, therefore reduces the waste that the heating loss of whole pfc circuit reduces energy.
Description
Technical field
The present invention relates to PFC control fields, more particularly to a kind of pfc circuit and transducer air conditioning.
Background technology
The driving frequency-changeable compressor or the PFC of direct current generator being currently used under low-voltage such as 100VAC supply voltages
(Power Factor Correction, Active PFC) circuit is existing generally using power supply is exported again after voltage multiplying rectifier
The pfc circuit of voltage multiplying rectifier scheme all includes two rectifier bridge stacks, wherein a bridge heap is used for voltage multiplying rectifier, one is served only in addition
Powered after full-wave rectification to PFC parts, in the whole pfc circuit course of work, each diode a total of 8 of this two bridge heaps
Individual diode will work, and because the operating current of pfc circuit is big, therefore the heating of the two bridge heaps is big, causes very big energy
Waste.
The content of the invention
It is a primary object of the present invention to provide a kind of pfc circuit and transducer air conditioning, it is therefore intended that solve existing multiplication of voltage
The problem of pfc circuit bridge heap heating of rectifier system is big.
To achieve the above object, a kind of pfc circuit for providing of the present invention, including reactor, rectification module, switch module,
First electric capacity, the second electric capacity, controller and drive module；
The reactor connects the input of AC power, and the reactor, rectification module are connected on ac power supply circuit
In；
The rectification module output end is connected in parallel on after first electric capacity and the second electric capacity series connection,
The drive module is connected in parallel on the rectification module output end, the rectification module to the AC rectification of input into
Direct current, to provide power supply for drive module work, the drive module control end connects the controller, the control
Device controls the drive module to be run with driving load；
The rectification module includes the first rectification unit and the second rectification unit, and first rectification unit includes the one or two
Pole pipe and the first IGBT pipes, second rectification unit includes the second diode and the 2nd IGBT is managed, first rectification unit
In parallel with the second rectification unit, first rectification unit and the second rectification unit include by diode respectively and carry afterflow two
The branch road that the IGBT pipes of pole pipe are composed in series, the control end of two IGBT pipes of the rectification module connects the control respectively
Device, two IGBT pipes of the rectification module carry out switch switching under control of the controller, with what is exported to the rectification module
DC voltage and DC current carry out Active PFC；
The common contact of first electric capacity and the second electric capacity connects the ac power supply circuit, so that by rectification module and institute
The first electric capacity and the second capacitance group are stated into voltage doubling rectifing circuit.
It is preferred that, the positive pole of first diode connects the source class of the first IGBT pipes, second diode
Positive pole connects the source class of the 2nd IGBT pipes, first diode cathode it is in parallel with the negative pole of second diode as
The cathode output end of the rectification module, the drain electrode of the first IGBT pipes is in parallel as institute with the drain electrode of the 2nd IGBT pipes
State the cathode output end of rectification module.
It is preferred that, the positive pole of first diode connects the source class of the first IGBT pipes, second diode
Positive pole connects the source class of the 2nd IGBT pipes, and the source class of the first IGBT pipes is in parallel with the source class of the 2nd IGBT pipes to be done
For the cathode output end of the rectification module, first diode cathode is in parallel with the negative pole of second diode as institute
State the cathode output end of rectification module.
It is preferred that, the common contact of first electric capacity and the second electric capacity connects the zero line input of the alternating voltage.
It is preferred that, the common contact of first electric capacity and the second electric capacity connects the live wire input of the alternating voltage.
It is preferred that, in addition to current detection module,
The current detection module is series at the ac circuit, and the output end of the current detection module connects the control
Device processed, to detect the AC current values of the AC power input.
It is preferred that, in addition to zero passage detection module,
The zero passage detection wired in parallel connects institute in the ac power input end, the zero passage detection module output end
Controller is stated, to detect the voltage zero-crossing signal of the AC power, the controller is controlled according to the voltage zero-crossing signal
The on off state of two IGBT pipes of the rectification module is switched over.
It is preferred that, in addition to voltage detection module,
The voltage detection module is connected in parallel on the rectification module output end, the output end connection of the voltage detection module
The controller, to detect the DC voltage value of the rectification module output.
To achieve the above object, the present invention also provides a kind of transducer air conditioning, and the transducer air conditioning includes described PFC
Circuit.
The pfc circuit that the present invention is provided, by setting two IGBT pipes for including by diode and carrying fly-wheel diode
The branch circuit parallel connection being composed in series constitutes rectification module, and reactor connects the input of AC power, reactor, rectification module string
It is associated in ac power supply circuit, rectification module output end is connected in parallel on and the first electric capacity and the after the first electric capacity and the series connection of the second electric capacity
The common contact connection ac circuit of two electric capacity, operationally, its current loop only passes through one to the pfc circuit of the embodiment of the present invention
The fly-wheel diode of diode or an IGBT pipe, compared with the prior art the need for by two rectifier bridge stacks each two pole
Pipe, greatly reduces the working quantity of diode, therefore reduce the wave that the heating loss of whole pfc circuit reduces energy
Take.
Brief description of the drawings
Fig. 1 is the electrical block diagram of pfc circuit first embodiment of the present invention；
Fig. 2 is current loop schematic diagram of the reactor in energy storage in first embodiment；
Fig. 3 be first embodiment in the first electric capacity charge current loop schematic diagram；
Fig. 4 is another current loop schematic diagram of the reactor in energy storage in first embodiment；
Fig. 5 be first embodiment in the second electric capacity charge current loop schematic diagram；
Fig. 6 is the electrical block diagram of pfc circuit second embodiment of the present invention；
Fig. 7 be second embodiment in the second electric capacity charge current loop schematic diagram；
Fig. 8 be second embodiment in the first electric capacity charge current loop schematic diagram；
Fig. 9 is the electrical block diagram of pfc circuit 3rd embodiment of the present invention；
Figure 10 is the electrical block diagram of pfc circuit fourth embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Reference picture 1, the pfc circuit structure chart that Fig. 1 provides for first embodiment of the invention, for convenience of description, only shows
The part related to the embodiment of the present invention, details are as follows：
Pfc circuit provided in an embodiment of the present invention includes reactor L, rectification module 10, switch module 20, the first electric capacity
E1, the second electric capacity E2, controller 20 and drive module 30；
The input of reactor L connection AC powers, reactor L, rectification module 10 are connected in ac power supply circuit；
The output end of rectification module 10 is connected in parallel on after first electric capacity E1 and the second electric capacity E2 series connection,
Drive module 30 is connected in parallel on the output end of rectification module 10, and the AC rectifications of 10 pairs of inputs of rectification module is into direct current
Electricity, to provide power supply, the control end of drive module 30 connection controller 20, the control driving mould of controller 20 for the work of drive module 30
Block 30 is run with driving load；
Rectification module 10 includes the first rectification unit 11 and the second rectification unit 12, and the first rectification unit 11 includes the one or two
Pole pipe D1 and the first IGBT pipe Q1, the second rectification unit 12 includes the second diode D2 and the 2nd IGBT pipe Q2, the first rectification list
Member 11 and the second rectification unit 12 are in parallel, and the first rectification unit 11 and the second rectification unit 12 include by diode and carried respectively
IGBT pipes (Insulated Gate Bipolar Transistor, the insulated gate bipolar transistor) series connection of fly-wheel diode
The branch road of composition, the control end of two IGBT pipes of rectification module 10 connects controller 20, two of rectification module 10 respectively
IGBT pipes carry out switch switching under the control of controller 20, are carried out with the DC voltage and DC current that are exported to rectification module 10
Active PFC；
First electric capacity E1 and the second electric capacity E2 common contact connection ac power supply circuit, so that by rectification module 10 and first
Electric capacity E1 and the second electric capacity E2 composition voltage doubling rectifing circuits.
First rectification unit 11 of rectification module 10 includes the first diode D1 and the first IGBT pipe Q1, the second rectification unit
12 include the second diode D2 and the 2nd IGBT pipes Q2；
First diode D1 positive pole connects the first IGBT pipes Q1 colelctor electrode, the second diode D2 positive pole connection second
IGBT pipes Q2 colelctor electrode, the first diode D1 negative poles and the second diode D2 the negative pole positive pole in parallel as rectification module 10
Output end, the first IGBT pipes Q1 emitter stage negative pole as rectification module 10 in parallel with the 2nd IGBT pipes Q2 emitter stage is exported
End.
First electric capacity E1 and the second electric capacity E2 common contact are connected to the zero line input of AC power.
The pfc circuit of the present embodiment also includes zero passage detection module 50, and it is defeated that zero passage detection module 50 is connected in parallel on AC power
Enter end, the output end of zero passage detection module 50 connection controller 20, to detect the voltage zero-crossing signal of AC power, controller according to
The on off state of two IGBT pipes of voltage zero-crossing signal control rectification module 10 is switched over.Zero passage detection module 50 it is specific
Circuit refers to prior art, will not be repeated here.
The pfc circuit of the present embodiment also includes current detection module 40, and current detection module 40 is series at ac circuit, schemes
Current detection module 40 is connected on the zero line of AC power in 1, naturally it is also possible to be connected on the zero line side of AC power, electric current
The output end connection controller 20 of detection module 40, to detect the AC current values of AC power input.Current detection module 40
By being constituted including current transformer T1 and additional detection circuit, the physical circuit of current detection module 40 refers to prior art,
It will not be repeated here.
The pfc circuit of the present embodiment also includes voltage detection module 60, and voltage detection module 60 is connected in parallel on rectification module 10
Output end, the output end connection controller 20 of voltage detection module 60, to detect the DC voltage value of the output of rectification module 10.Electricity
Detection module 60 is pressed to refer to prior art using the ball bearing made composition based on electric resistance partial pressure structure type, physical circuit,
It will not be repeated here.
Pfc circuit operation principle shown in the present embodiment is as follows：By the electricity of the electric capacity E1 of rectification module 10 and first and second
The current rectifying and wave filtering circuit for holding E2 compositions is operated in voltage multiplying rectifier pattern.As shown in Fig. 2 when controller 20 controls the first IGBT pipes Q1
When conducting, the 2nd IGBT pipes Q2 cut-offs, now AC power electric current from live wire be L lines through reactor L, the first IGBT pipes Q1
Collector and emitter, the positive pole of the 2nd IGBT pipes Q2 sustained diode 4 and negative pole return to AC power zero line i.e. N lines
Loop is constituted, the energy storage to reactor L is realized；As shown in figure 3, when controller 20 controls the first IGBT pipes Q1 cut-offs, reactance
Induced electromotive force is produced on device L, it flows through the reactor L sense of current with being consistent before the first IGBT pipes Q1 cut-offs, now
The electric current that reactor L induced electromotive force is produced constitutes loop with to the first electric capacity E1 through the first diode D1, the first electric capacity E1
Charging, with this realize AC power electric current from L line starting directions when from rectification module 10 export DC voltage and electric current
Active PFC.As shown in figure 4, when controller 30 controls the 2nd IGBT pipes Q2 conductings, the first IGBT pipes Q1 cut-offs, this
When AC power electric current from live wire be collector and emitter of the N lines through the 2nd IGBT pipes Q2, the first IGBT pipes Q1 it is continuous
Stream diode D3 positive pole and negative pole, reactor L returns to AC power zero line i.e. L lines and constitutes loop, realizes the storage to reactor L
Energy；As shown in figure 5, when controller 20 controls the 2nd IGBT pipes Q2 cut-offs, producing induced electromotive force on reactor L, it is flowed through
The reactor L sense of current is consistent before ending with the 2nd IGBT pipes Q2, the electricity that now reactor L induced electromotive force is produced
Flow through the second electric capacity E2, the first IGBT pipes Q1 sustained diode 3 into current loop with to the second electric capacity E2 charge, with this reality
Showed AC power electric current from N line starting directions when from rectification module 10 export DC voltage and electric current power factor (PF) school
Just.The opposed polarity induced electromotive force that above-mentioned reactor L is produced charges to the first electric capacity E1 and the second electric capacity E2 respectively, therefore the
One electric capacity E1 and the voltage at the second electric capacity E2 two ends are one times of voltage on single electric capacity, realize voltage multiplying rectifier mode.Therefore,
Controller by controlling the first IGBT pipes Q1 and the 2nd IGBT pipes Q2 alternate conduction and cut-off, realizes voltage multiplying rectifier mould respectively
Active PFC function under formula.
Pfc circuit shown in the present embodiment, the load that drive module 30 drives includes compressor or motor, pressure here
Contracting machine or motor are permagnetic synchronous motor, and drive module is included by IPM modules (Intelligent Power Module, intelligence
Power model) composition circuit, under the control of controller 20, realize will the DC inverter that be carried in IPM modules into exchange
Electricity realizes the driving to compressor or motor.Operationally, what it is due to pfc circuit input is to hand over to the pfc circuit of the present embodiment
Stream electricity, it is therefore desirable to ensure to maintain electric current in the first IGBT pipes Q1 or the 2nd IGBT pipes Q2 work, to realize to reactor L's
Energy storage, thus controller needs the zero cross signal by zero detection module 50 detection alternating current, and first is just controlled after zero passage
IGBT pipes Q1 or the 2nd IGBT pipes turn on to guarantee to realize the energy storage to reactor L by lasting electric current.And pfc circuit
In the course of the work, controller 20 also needs to obtain the operating current of current circuit by current detection module 40, if it find that
The operating current of load is too high, when causing the operating current of pfc circuit too high, and controller 20 controls two IGBT pipes to close to close
Close the whole pfc circuit of pfc circuit work protection.In the process, controller 20 is also needed to by voltage the pfc circuit of the present embodiment
The DC voltage of the detection rectification module output in real time of detection module 60 is DC bus-bar voltage, higher in d-c bus voltage value
When, the pwm value that can be turned on by the first IGBT pipes Q1 of adjustment or the 2nd IGBT pipes, to reduce the d-c bus voltage value of output,
Realize the stabilization of d-c bus voltage value.
The pfc circuit of the present embodiment from the above-mentioned course of work it is recognised that when being operated under voltage multiplying rectifier pattern,
During reactor L energy storage, current loop only passes through the fly-wheel diode of one of IGBT pipes, and produces induced electricity in reactor L
When kinetic potential charges to the first electric capacity E1 and the second electric capacity E2, current loop only a diode therethrough or one of them
The fly-wheel diode of IGBT pipes.Therefore during the pfc circuit work of two rectifier bridge stacks of sampling compared with the prior art, every bridge heap
Each diode work, the pfc circuit of the embodiment of the present invention operationally greatly reduces the working quantity of diode, because
This heating loss for reducing whole pfc circuit reduces the waste of energy.
Pfc circuit provided in an embodiment of the present invention, by setting two to include by diode and carrying fly-wheel diode
The branch circuit parallel connection composition rectification module 10 that IGBT pipes are composed in series, and the input of reactor L connection AC powers, reactor L,
Rectification module 10 is connected in ac power supply circuit, and to be connected in parallel on rectification module 10 defeated after the first electric capacity E1 and the second electric capacity E2 series connection
Go out end, and the first electric capacity E1 and the second electric capacity E2 common contact connection ac circuit.The pfc circuit of the embodiment of the present invention is in work
When, its current loop only by the fly-wheel diode of a diode or an IGBT pipe, compared with the prior art the need for pass through
Each diode of two rectifier bridge stacks, greatly reduces the working quantity of diode, therefore reduces the hair of whole pfc circuit
Thermal losses reduces the waste of energy.
Further, based on pfc circuit first embodiment of the present invention, pfc circuit such as Fig. 6 institutes of second embodiment of the invention
Show, being a difference in that the first electric capacity E1 and the second electric capacity E2 from first embodiment, contact connected mode is different altogether.
The common contacts of first electric capacity E1 and the second electric capacity E2 connect the live wire input of AC power.
In the present embodiment, contact is changed to be connected to the live wire of nearly AC power i.e. to the first electric capacity E1 and the second electric capacity E2 altogether
L line ends, are specifically connected in parallel between reactor L and an ac input end of rectification module 20.
During the pfc circuit work of the present embodiment, cause when the first IGBT pipes Q1 or the 2nd IGBT pipes Q2 is turned at reactor L
Its operation principle is identical with first embodiment when under energy storage state, is a difference in that when the first IGBT pipes Q1 or the 2nd IGBT is managed
The current loop that Q2 ends the induced electromotive force formation that reactor L is produced is different.As shown in fig. 7, as the first IGBT pipes Q1
When becoming cut-off from conducting, induced electromotive force is produced on reactor L, its sense of current for flowing through reactor L and the first IGBT are managed
It is consistent before Q1 cut-offs, the electric current that now reactor L induced electromotive force is produced is through the second electric capacity E2, the 2nd IGBT pipes Q2
Sustained diode 4 constitute loop with to the second electric capacity E2 charge, with this realize AC power electric current from L line starting directions when
From rectification module 10 export DC voltage and electric current Active PFC；As shown in figure 8, when the 2nd IGBT pipes Q2 is from leading
Logical to produce induced electromotive force on reactor L when becoming cut-off, it flows through Q2 sections of reactor L sense of current and the 2nd IGBT pipes
Only before it is consistent, the electric current that now reactor L induced electromotive force is produced is constituted back through the second diode D2, the first electric capacity E1
Road with to the first electric capacity E1 charge, with this realize AC power electric current from N line starting directions when exported from rectification module 10
DC voltage and electric current Active PFC.Above-mentioned charging process only by a diode, compared with the prior art will
Each diode by two rectifier bridge stacks will greatly reduce, therefore reduce the heating loss of whole pfc circuit.
Further, based on pfc circuit first embodiment of the present invention, pfc circuit such as Fig. 9 institutes of third embodiment of the invention
Show, it is different from the circuit structure that first embodiment is a difference in that rectification module 10.
The positive pole of first diode connects the first IGBT pipes Q1 colelctor electrode, and the positive pole of the second diode connects the 2nd IGBT
Pipe Q2 colelctor electrode, the first diode cathode cathode output end as rectification module in parallel with the negative pole of the second diode, the
One IGBT pipes Q1 emitter stage and the 2nd IGBT pipes Q2 emitter stage cathode output end in parallel as rectification module.I.e. first is whole
The link position for flowing the diode in the rectification unit 12 of unit 11 and second and IGBT pipes is exchanged with respect to first embodiment.
The pfc circuit principle of the present embodiment is similar to first embodiment, in the first IGBT pipes Q1 of pfc circuit or second
When IGBT pipes Q2 is turned on, fly-wheel diode of its electric current in current loop respectively through one of IGBT pipes and another
The collector and emitter of IGBT pipes is with to reactor L energy storage；And become in the first IGBT pipes Q1 or the 2nd IGBT pipes Q2 conductings
During cut-off, the induced electromotive force pole of sustained diode 3 or the 1st through the first IGBT pipes Q1 respectively that its reactor L is produced
Pipe D1 charges to the first electric capacity E1 or the second electric capacity E2, and its charge circuit is at most only by a diode or IGBT pipe
Fly-wheel diode, it is identical with the diode operation quantity of first embodiment, therefore two are equally greatly reduced compared with the prior art
The working quantity of pole pipe, therefore reduce the waste that the heating loss of whole pfc circuit reduces energy.
Further, based on pfc circuit 3rd embodiment of the present invention, pfc circuit such as Figure 10 of fourth embodiment of the invention
Shown, being a difference in that the first electric capacity E1 and the second electric capacity E2 from 3rd embodiment, contact connected mode is different altogether.First electric capacity
Electricity of the connected mode of the common contacts of E1 and the second electric capacity E2 with the common contacts of the first electric capacity E1 in second embodiment and the second electric capacity E2
Road connected mode.
The pfc circuit principle of the present embodiment is similar to 3rd embodiment, in the pfc circuit course of work, its current loop
In at most only by the fly-wheel diodes of a diodes or an IGBT pipes, the diode operation quantity phase with first embodiment
Together, the working quantity of diode therefore is equally greatly reduced compared with the prior art, therefore reduces the heating of whole pfc circuit
Loss reduces the waste of energy.
The present invention also provides a kind of transducer air conditioning, by indoor set, outdoor unit into wherein outdoor unit compresses including frequency conversion
Machine, outdoor unit control circuit includes above-mentioned pfc circuit, and its specific embodiment refers to above-described embodiment, herein no longer
Repeat.
In the description of this specification, the description meaning of reference term " first embodiment ", " second embodiment ", " example " etc.
Refer to reference to specific method, device or the feature that the embodiment or example are described be contained in the present invention at least one embodiment or
In example.In this manual, identical embodiment or example are necessarily directed to the schematic representation of above-mentioned term.And
And, specific features, method, device or the feature of description can be in any one or more embodiments or example with suitable side
Formula is combined.In addition, in the case of not conflicting, those skilled in the art can be real by the difference described in this specification
The feature for applying example or example and non-be the same as Example or example is combined and combined.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of power factor correction circuit, it is characterised in that including reactor, rectification module, switch module, the first electric capacity,
Second electric capacity, controller and drive module；
The reactor connects the input of AC power, and the reactor, rectification module are connected in ac power supply circuit；
The rectification module output end is connected in parallel on after first electric capacity and the second electric capacity series connection,
The drive module is connected in parallel on the rectification module output end, and the rectification module is to the AC rectification of input into direct current
Electricity, to provide power supply for drive module work, the drive module control end connects the controller, the controller control
The drive module is made to run with driving load；
The rectification module includes the first rectification unit and the second rectification unit, and first rectification unit includes the first diode
With the first IGBT pipes, second rectification unit includes the second diode and the 2nd IGBT and managed, first rectification unit and the
Two rectification units are in parallel, and first rectification unit and the second rectification unit include by diode respectively and carry fly-wheel diode
The branch road that is composed in series of IGBT pipes, the control end of two IGBT pipes of the rectification module connects the controller, institute respectively
The two IGBT pipes for stating rectification module carry out switch switching under control of the controller, with the direct current exported to the rectification module
Pressure and DC current carry out Active PFC；
The common contact of first electric capacity and the second electric capacity connects the ac power supply circuit, so that by rectification module and described the
One electric capacity and the second capacitance group are into voltage doubling rectifing circuit.
2. power factor correction circuit as claimed in claim 1, it is characterised in that
The positive pole of first diode connects the source class of the first IGBT pipes, and the positive pole connection of second diode is described
The source class of 2nd IGBT pipes, first diode cathode is in parallel with the negative pole of second diode as the rectification module
Cathode output end, the drain electrodes of the first IGBT pipes is in parallel with the drain electrode of the 2nd IGBT pipes as the rectification module
Cathode output end.
3. power factor correction circuit as claimed in claim 1, it is characterised in that
The positive pole of first diode connects the source class of the first IGBT pipes, and the positive pole connection of second diode is described
The source class of 2nd IGBT pipes, the source class of the first IGBT pipes is in parallel with the source class of the 2nd IGBT pipes as the rectification mould
The cathode output end of block, first diode cathode is in parallel with the negative pole of second diode as the rectification module
Cathode output end.
4. power factor correction circuit as claimed in claim 1, it is characterised in that
The common contact of first electric capacity and the second electric capacity connects the zero line input of the alternating voltage.
5. power factor correction circuit as claimed in claim 1, it is characterised in that
The common contact of first electric capacity and the second electric capacity connects the live wire input of the alternating voltage.
6. power factor correction circuit as claimed in claim 1, it is characterised in that also including current detection module,
The current detection module is series at the ac circuit, and the output end of the current detection module connects the control
Device, to detect the AC current values of the AC power input.
7. power factor correction circuit as claimed in claim 1, it is characterised in that also including zero passage detection module,
The zero passage detection wired in parallel connects the control in the ac power input end, the zero passage detection module output end
Device processed, to detect the voltage zero-crossing signal of the AC power, the controller is according to being controlled the voltage zero-crossing signal
The on off state of two IGBT pipes of rectification module is switched over.
8. power factor correction circuit as claimed in claim 1, it is characterised in that also including voltage detection module,
The voltage detection module is connected in parallel on the rectification module output end, and the output end connection of the voltage detection module is described
Controller, to detect the DC voltage value of the rectification module output.
9. a kind of transducer air conditioning, including the power factor correction circuit as described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710531630.5A CN107104589B (en) | 2017-06-30 | 2017-06-30 | PFC circuit and variable frequency air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710531630.5A CN107104589B (en) | 2017-06-30 | 2017-06-30 | PFC circuit and variable frequency air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107104589A true CN107104589A (en) | 2017-08-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023473A (en) * | 2018-01-29 | 2018-05-11 | 广东美的制冷设备有限公司 | Pfc circuit, electric machine control system and transducer air conditioning |
| CN108054913A (en) * | 2018-01-29 | 2018-05-18 | 广东美的制冷设备有限公司 | Pfc circuit, electric machine control system and transducer air conditioning |
| CN113189388A (en) * | 2020-01-14 | 2021-07-30 | 西门子股份公司 | Current sensor unit and current detection circuit |
| CN113453427A (en) * | 2021-07-13 | 2021-09-28 | 广东汇芯半导体有限公司 | Frequency conversion controller |
| CN113676028A (en) * | 2020-05-13 | 2021-11-19 | 海信（山东）空调有限公司 | PFC protection circuit and frequency conversion equipment |
| WO2022017330A1 (en) * | 2020-07-22 | 2022-01-27 | 广东美的制冷设备有限公司 | Totem-pole pfc circuit and control method therefor, circuit board, air conditioner, and storage medium |
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| CN101924481A (en) * | 2009-06-09 | 2010-12-22 | 深圳市盛弘电气有限公司 | PFC (Power Factor Correction) rectifier circuit |
| US20130314962A1 (en) * | 2012-05-24 | 2013-11-28 | Rong Shin Jong Co., Ltd. | Three-phase reactor power saving device |
| CN104834239A (en) * | 2015-05-12 | 2015-08-12 | 广东美的制冷设备有限公司 | Current loop communication and power supply control circuit of air conditioner and outdoor unit thereof |
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| CN101924481A (en) * | 2009-06-09 | 2010-12-22 | 深圳市盛弘电气有限公司 | PFC (Power Factor Correction) rectifier circuit |
| US20130314962A1 (en) * | 2012-05-24 | 2013-11-28 | Rong Shin Jong Co., Ltd. | Three-phase reactor power saving device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023473A (en) * | 2018-01-29 | 2018-05-11 | 广东美的制冷设备有限公司 | Pfc circuit, electric machine control system and transducer air conditioning |
| CN108054913A (en) * | 2018-01-29 | 2018-05-18 | 广东美的制冷设备有限公司 | Pfc circuit, electric machine control system and transducer air conditioning |
| CN108023473B (en) * | 2018-01-29 | 2023-10-31 | 广东美的制冷设备有限公司 | PFC circuit, motor control system and variable frequency air conditioner |
| CN108054913B (en) * | 2018-01-29 | 2023-11-28 | 广东美的制冷设备有限公司 | PFC circuit, motor control system and variable frequency air conditioner |
| CN113189388A (en) * | 2020-01-14 | 2021-07-30 | 西门子股份公司 | Current sensor unit and current detection circuit |
| CN113676028A (en) * | 2020-05-13 | 2021-11-19 | 海信（山东）空调有限公司 | PFC protection circuit and frequency conversion equipment |
| WO2022017330A1 (en) * | 2020-07-22 | 2022-01-27 | 广东美的制冷设备有限公司 | Totem-pole pfc circuit and control method therefor, circuit board, air conditioner, and storage medium |
| CN113453427A (en) * | 2021-07-13 | 2021-09-28 | 广东汇芯半导体有限公司 | Frequency conversion controller |
| CN113453427B (en) * | 2021-07-13 | 2024-06-11 | 广东汇芯半导体有限公司 | Variable frequency controller |
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