CN108183603A - A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction - Google Patents
A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction Download PDFInfo
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- CN108183603A CN108183603A CN201711100466.9A CN201711100466A CN108183603A CN 108183603 A CN108183603 A CN 108183603A CN 201711100466 A CN201711100466 A CN 201711100466A CN 108183603 A CN108183603 A CN 108183603A
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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
- H02M1/4241—Arrangements for improving power factor of AC input using a resonant converter
-
- 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
- H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
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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
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
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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
Abstract
The invention discloses a kind of no bridge Sofe Switch resonance isolated form circuit of power factor correction and its control methods, belong to power electronics field.Circuit of power factor correction, including no bridge input terminal, the no bridge input terminal includes input inductance, first switch pipe, second switch pipe, the first parasitic capacitance, the second parasitic capacitance, the first rectifier diode, the second rectifier diode, the first anti-paralleled diode, the second anti-paralleled diode, and circuit of power factor correction further includes third switching tube, clamp capacitor, third anti-paralleled diode, resonant inductance, primary side capacitance, isolating transformer, secondary capacitance, secondary rectifier bridge, output capacitance；In a switch periods, using active clamp technology, realize that the no-voltage of main switch and auxiliary switch pipe is open-minded.The circuit and control method of the present invention has many advantages, such as to realize that few input and output voltage isolation, required component, high conversion efficiency, control is simple and power factor is high.
Description
Technical field
Present invention relates particularly to a kind of single-stage without bridge Sofe Switch resonance isolated form circuit of power factor correction and its controlling party
Method belongs to power electronics field.
Background technology
It is increasingly severe to the harmonic pollution of electric system with the extensive use of power electronic equipment.Exploitation is efficient
Rate, the converter topology of High Power Factor and its control mode have become research hotspot.Tradition isolated form power factor school at present
Positive circuit uses two-stage topology scheme.Prime uses low frequency diode rectification, and with reference to DC-DC（Direct current inversion of direct current）Realize power
Factor correcting, rear class use high-frequency isolation DC-DC schemes, realize that voltage is adjusted, and due to using two-layer configuration, and input terminal uses
Diode rectification is not controlled, there are component is more, the low shortcomings such as low with input power factor of transfer efficiency.
Invention content
Therefore, the present invention proposes a kind of novel unipolar alternate isolation scheme for above-mentioned deficiency of the prior art.
Specifically, the present invention provides a kind of no bridge Sofe Switch resonance isolated form circuit of power factor correction, including no bridge
Input terminal, the no bridge input terminal include input inductance, first switch pipe, second switch pipe, the first parasitic capacitance, the second parasitism
Capacitance, the first rectifier diode, the second rectifier diode, the first anti-paralleled diode, the second anti-paralleled diode, the no bridge
Sofe Switch resonance isolated form circuit of power factor correction further includes third switching tube, clamp capacitor, third anti-paralleled diode, humorous
It shakes inductance, primary side capacitance, isolating transformer, secondary capacitance, secondary rectifier bridge, output capacitance；
Input inductance one end connection input terminal positive pole, the input inductance other end is connected to the emitter and the of first switch pipe
Between the collector of two switching tubes, input terminal power cathode is connected to the anode and the second rectifier diode of the first rectifier diode
Cathode between, the collector of first switch pipe is sequentially connected the emitter of the cathode of the first rectifier diode, third switching tube
With primary side capacitance, resonant inductance is connected between primary side capacitance and isolating transformer, and the emitter of second switch pipe is sequentially connected
The anode of second rectifier diode, clamp capacitor cathode, isolating transformer primary side the other end, the collector of third switching tube connects
The anode of clamp capacitor is connect, the first parasitic capacitance, the first anti-paralleled diode are connected in parallel on the collector and hair of first switch pipe
Between emitter-base bandgap grading, the second parasitic capacitance, the second anti-paralleled diode are connected in parallel between the collector and emitter of second switch pipe,
Third anti-paralleled diode is connected in parallel between the collector and emitter of third switching tube, and secondary rectifier bridge one end passes through secondary electricity
Hold connection transformer secondary, secondary rectifier bridge other end connection output capacitance.
Further, the secondary rectifier bridge includes the full bridge rectifier of four input rectifying diode compositions.
The present invention also provides a kind of based on a kind of above-mentioned no bridge Sofe Switch resonance isolated form circuit of power factor correction
Soft switching control method, the control method within the work period by controlling switching tube turn-on and turn-off to realize, the work
It is specifically included as the period：
First stage：
First switch pipe and the conducting of the second main switch, the shutdown of third switching tube, input inductive current is linearly increasing, resonant inductance
Electric current increases, but its direction is negative, and resonant capacitor voltage increases, and isolating transformer secondary current is negative, and secondary capacitance voltage subtracts
It is small, and resonant inductance electric current progressively increases to zero by negative value, charges to output capacitance, output voltage increases；
Second stage：
First switch pipe and main switch are held on, and third switching tube is held off, and input inductive current keeps linear and increases
Add, resonant inductance electric current is become just by negative, and primary side capacitance starts to discharge, and primary side capacitance voltage starts to reduce, isolating transformer secondary
Electric current is become just by negative, and secondary capacitance starts to charge up, the raising of secondary capacitance voltage, the raising of output capacitance voltage；
Phase III：
First switch pipe and second switch pipe are begun to turn off, and third switching tube is held off, and input inductive current starts linearly to subtract
Small, resonant inductance electric current also begins to reduce, but is still positive value.Input second parasitic capacitance of the inductive current to second switch pipe
Charging, the second parasitic capacitor voltage start to increase.Secondary current remains positive value, and to secondary capacitor charging, secondary capacitance electricity
Pressure increases, and the third anti-paralleled diode of third switching tube is begun to turn on, and starts to charge to clamp capacitor；
Fourth stage：
First switch pipe and second switch pipe are held off, and third switching tube is open-minded, and input inductive current keeps linear and reduces, humorous
The inductive current that shakes starts by reducing, but direction is just, until being reduced to zero, secondary current keeps positive value and filled to secondary capacitance
Electricity, secondary capacitance voltage increase, and output capacitance voltage increases, until resonant inductance electric current is reduced to zero；
5th stage：
First switch pipe and the shutdown of second switch pipe, third switching tube is open-minded, and resonant inductance electric current starts reversely to be increased by zero, pincers
Position capacitance starts to discharge.Secondary current starts reversely to become negative value, and secondary capacitance voltage reduces, and input inductive current keeps linear
Reduce；
6th stage：
Third switching tube turns off, and resonant inductance electric current starts to reduce, and direction is negative, and the energy stored in resonant inductance at this time is more than
The energy of second parasitic capacitance storage, the second parasitic capacitor voltage will be discharged to zero, at this time first switch pipe, second switch pipe
Anti-paralleled diode conducting, if opening first switch pipe, second switch pipe at this time, at first switch pipe, second switch pipe
In no-voltage opening state, another period starts.
The beneficial effects of the present invention are：A kind of single-stage provided by the invention is without bridge Sofe Switch resonance isolated form power factor
Correcting circuit, Two Stages scheme compared with the prior art using no bridge topological structure, with reference to soft switch technique, realize work(
Rate factor correcting（Power Factor Correction, PFC）, input and output voltage isolation and adjust output voltage, due to
Its single step arrangement and merely through level-one power conversion, there is simple high conversion efficiency, control, low cost and Harmonics of Input to contain
Measure the advantages that low and power factor is high.
Description of the drawings
Fig. 1 is a kind of circuit topology figure of no bridge Sofe Switch resonance isolated form circuit of power factor correction of the present invention；
Fig. 2 is a kind of complete period signal of control method of no bridge Sofe Switch resonance isolated form circuit of power factor correction of the present invention
Figure；
Fig. 3 is the equivalent circuit diagram of first stage；
Fig. 4 is the equivalent circuit diagram of second stage；
Fig. 5 is the equivalent circuit diagram of phase III；
Fig. 6 is the equivalent circuit diagram of fourth stage；
Fig. 7 is the equivalent circuit diagram in the 5th stage；
Fig. 8 is the equivalent circuit diagram in the 6th stage；
Fig. 9 a, Fig. 9 b are respectively the drive waveforms of main switch and auxiliary switch pipe and voltage stress oscillogram；
When Figure 10 is respectively 220V for input voltage, output power is from zero load to fully loaded（1000W）When, the transfer efficiency of converter
Figure；
When Figure 11 is respectively 220V for input voltage, output power is from zero load to full load（1000W）When, Harmonics of Input contains
Spirogram.
Specific embodiment
Description of specific embodiments of the present invention below in conjunction with the accompanying drawings：
The present embodiment proposes a kind of single-stage isolated scheme.Using no bridge topological structure, with reference to soft switch technique, input and output are realized
Voltage isolation, PFC（Power Factor Correction, PFC）With adjusting output voltage.Circuit topology is such as
Shown in Fig. 1.
Main circuit part is used based on resonance isolated soft switching scheme.By input rectifying diode D1、D2And switching tube
S1、S2Composition without bridge input terminal, auxiliary switch pipe S3, boost inductance L, power tube parasitic capacitance Cr, clamp capacitor CC, high-frequency isolation
Transformer T1, resonant inductance Lr, primary side capacitance CP, secondary capacitance CSWith rectifier diode D3、 D4、D5And D6, output capacitance CoStructure
Into.Define S1And S2For main switch, S3Supplemented by switching tube.Wherein, S1And S2Drive signal it is identical.Supervisor and auxiliary pipe are according to mutual
Benefit opens mode and works, and can realize the ZVS no-voltages conducting of three switching tubes.Resonant inductance LrWith primary side capacitance CPIt forms humorous
Shake circuit, and resonant frequency can be more than, less than or equal to switching frequency.For the ease of analysis, with switching frequency higher than resonance frequency
It is analyzed for rate, while only analyzes working condition when AC-input voltage is positive half period, input voltage is negative half period
Phase is similar.Six stages is divided to be analyzed below, complete period schematic diagram uses as shown in Fig. 2, in a switch periods
Active clamp technology realizes that the no-voltage of main switch and auxiliary switch pipe is open-minded.The circuit and control method of the present invention, has energy
The advantages that realizing few input and output voltage isolation, required component, high conversion efficiency, controlling simple and power factor high.
First stage (t0-t1)：
t0Moment, main switch S1And S2Conducting, auxiliary switch pipe S3Shutdown.Input inductive current isIt is linearly increasing, resonant inductance electricity
Flow iLrIncrease, but its direction is negative, resonant capacitor voltage UCpIncrease.Transformer secondary side current isecIt is negative, capacitance voltage UCsSubtract
It is small.And zero is gradually become, and to output capacitance CoutCharging, and voltage UoutIncrease.Diode D3And D6Conducting.
Transformer primary side forms two circuits.Power supply UsAnode, inductance L, switching tube S1, capacitance CP, inductance Lr, diode D2
With power supply UsNegative terminal forming circuit 1.Switching tube S1, capacitance CP, inductance Lr, switching tube S2Forming circuit 2.Its equivalent circuit diagram is as schemed
Shown in 3.This state is continued until t1Moment, resonant inductance electric current iLrIncrease to zero.
Second stage (t1-t2)：
t1Moment, main switch S1And S2It is held on, auxiliary switch pipe S3It is held off, input inductive current isIt keeps linear to increase
Add.Resonant inductance electric current iLrBecome just by negative, capacitance CpStart to discharge, resonant capacitor voltage UCpStart to reduce.Transformer secondary electricity
Stream is become just by negative, secondary side diode D4、D5Conducting, capacitance CSIt starts to charge up, capacitance voltage UCsRaising, output capacitance voltage UoutIt rises
It is high.
Voltage device primary side forms two circuits.Power supply Us anodes, inductance L, switching tube S2, diode D2With power supply Us negative terminals
Forming circuit 1.Switching tube S1, capacitance CP, inductance Lr, switching tube S2Forming circuit 2.Its equivalent circuit diagram is as shown in Figure 4.
Phase III (t2-t3)：
t2Moment, main switch S1And S2It begins to turn off, auxiliary switch pipe S3It is held off.Input inductive current isStart linearly to subtract
It is small, resonant inductance electric current iLrIt also begins to reduce, but is still positive value.Inductive current isGive main switch S2Parasitic capacitance Cr2It fills
Electricity, capacitance voltage UCrStart to increase.Secondary side diode D4And D5Constantly on, capacitance Cs keeps charging, capacitance voltage UCsIncrease.
Auxiliary pipe S3Parasitic diode is begun to turn on, and starts to give clamp capacitor CcCharging.This process time is shorter, in the process input electricity
Inducing current isSize is held essentially constant.
Transformer primary side forms three circuits.Power supply Us anodes, inductance L, switching tube S1, clamp capacitor CC, diode D2With
Power supply Us negative terminals forming circuit 1.Power supply Us anodes, inductance L, switching tube S2, diode D2With power supply Us negative terminals forming circuit 2.It opens
Close pipe S3, capacitance CP, inductance Lr, clamp capacitor CCForming circuit 3.Its equivalent circuit diagram is as shown in Figure 5.
Fourth stage (t3-t4)：
t3Moment, main switch S1And S2It is held off, auxiliary switch pipe S3It is open-minded.Input inductive current isIt keeps linear to reduce.It is humorous
Shake inductive current iLrStart by reducing, but direction is just, to t4Moment is reduced to zero.Secondary side diode D4And D5It is held on, and
It charges to capacitance Cs, capacitance voltage UCsIncrease, output capacitance voltage UoutIncrease.Until t4Moment, resonant inductance electric current iLrReduce
To zero.
Transformer primary side forms two circuits.Power supply Us anodes, inductance L, switching tube S1, clamp capacitor CC, diode D2With
Power supply Us negative terminals forming circuit 1.Switching tube S3, capacitance CP, inductance Lr, clamp capacitor CCForming circuit 2.Due to auxiliary switch pipe S3's
Anti-paralleled diode has been turned on, and auxiliary switch pipe is in no-voltage (ZVS) opening state.Its equivalent circuit diagram is as shown in Figure 6.
5th stage (t4-t5)：
t4Moment, main switch S1And S2Shutdown, auxiliary switch pipe S3It is open-minded.Resonant inductance electric current iLrStart reversely to be increased by zero,
Clamp capacitor CCStart to discharge.Secondary side diode D3And D6Conducting, capacitance voltage UCsReduce.Input inductive current isKeep linear
Reduce.
Transformer primary side forms two circuits.Power supply Us anodes, inductance L, switching tube S1, capacitance Cp, inductance Lr, diode
D2With power supply Us negative terminals forming circuit 1.Switching tube S3, capacitance CP, inductance Lr, clamp capacitor CCForming circuit 2.Its equivalent circuit diagram
As shown in Figure 7.
6th stage (t5-t6)：
t5Moment, auxiliary switch pipe S3Shutdown.Resonant inductance electric current iLrStart to reduce, direction is negative.Assuming that resonant inductance LrIn deposit
The energy of storage is more than parasitic capacitance Cr2The energy of storage, parasitic capacitor voltage will be discharged to zero, at this time main switch S2It is anti-
Parallel diode is connected.If opening main switch at this time, supervisor is in no-voltage opening state.t6Moment opens S1And S2, separately
A cycle starts.
Transformer primary side forms two circuits.Power supply UsAnode, inductance L, switching tube S1, capacitance Cp, inductance Lr, diode D2
With power supply UsNegative terminal forming circuit 1.Switching tube S1, capacitance Cp, inductance Lr, switching tube S2Forming circuit 2.Its equivalent circuit diagram is as schemed
Shown in 8.
According to above-mentioned technical proposal, 1KW model machines have been built.Parameter is as follows：Transformer primary side and the secondary turn ratio 8:12, inductance
L=0.5mH, switching tube S1、S2And S3Working frequency 85KHz, capacitance Cp=4uF, inductance Lr=5uH, capacitance Cs=2.2uF.
When input voltage is positive half period, Fig. 9 is switching tube drive waveforms and voltage stress waveform.Fig. 9 a are main switch
Pipe S2Driving and voltage stress waveform, switching tube S supplemented by Fig. 9 b3Driving and voltage stress waveform, as seen from the figure, power tube is open-minded
When, switching tube drain-source voltage is close to zero, in no-voltage opening state.Due to switching tube S1In positive half period, inverse parallel two
Pole pipe is in the conduction state, so being also at no-voltage opening state.Input voltage is similar for negative half-cycle situation.
When Figure 10 is respectively 220V for input voltage, output power is from zero load to fully loaded（1000W）, the conversion effect of converter
Rate figure, as seen from the figure, peak efficiency reaches 95.2%.
When Figure 11 is respectively 220V for input voltage, output power is from zero load to full load（1000W）When, input current is abnormal
Variability, as shown in Figure 11, input current abnormality rate minimum 3.1%.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of no bridge Sofe Switch resonance isolated form circuit of power factor correction, including no bridge input terminal, which is characterized in that described
No bridge input terminal includes input inductance, first switch pipe, second switch pipe, the first parasitic capacitance, the second parasitic capacitance, first whole
Flow diode, the second rectifier diode, the first anti-paralleled diode, the second anti-paralleled diode, the no bridge Sofe Switch resonance
Isolated form circuit of power factor correction further includes third switching tube, clamp capacitor, third anti-paralleled diode, resonant inductance, original
Side capacitance, isolating transformer, secondary capacitance, secondary rectifier bridge, output capacitance；
Input inductance one end connection input terminal positive pole, the input inductance other end is connected to the emitter and the of first switch pipe
Between the collector of two switching tubes, input terminal power cathode is connected to the anode and the second rectifier diode of the first rectifier diode
Cathode between, the collector of first switch pipe is sequentially connected the emitter of the cathode of the first rectifier diode, third switching tube
With primary side capacitance, resonant inductance is connected between primary side capacitance and isolating transformer, and the emitter of second switch pipe is sequentially connected
The anode of second rectifier diode, clamp capacitor cathode, isolating transformer primary side the other end, the collector of third switching tube connects
The anode of clamp capacitor is connect, the first parasitic capacitance, the first anti-paralleled diode are connected in parallel on the collector and hair of first switch pipe
Between emitter-base bandgap grading, the second parasitic capacitance, the second anti-paralleled diode are connected in parallel between the collector and emitter of second switch pipe,
Third anti-paralleled diode is connected in parallel between the collector and emitter of third switching tube, and secondary rectifier bridge one end passes through secondary electricity
Hold connection transformer secondary, secondary rectifier bridge other end connection output capacitance.
A kind of 2. no bridge Sofe Switch resonance isolated form circuit of power factor correction as described in claim 1, which is characterized in that institute
State the full bridge rectifier that secondary rectifier bridge includes four input rectifying diode compositions.
3. it is a kind of based on described in claims 1 or 2 without the soft without bridge of bridge Sofe Switch resonance isolated form circuit of power factor correction
Switched resonance isolated form circuit of power factor correction control method, which is characterized in that the control method passed through in the work period
Interior that switching tube turn-on and turn-off is controlled to realize, the work period specifically includes：
First stage：
First switch pipe and the conducting of the second main switch, the shutdown of third switching tube, input inductive current is linearly increasing, resonant inductance
Electric current increases, but its direction is negative, and resonant capacitor voltage increases, and isolating transformer secondary current is negative, and secondary capacitance voltage subtracts
It is small, and resonant inductance electric current progressively increases to zero by negative value, charges to output capacitance, output voltage increases；
Second stage：
First switch pipe and main switch are held on, and third switching tube is held off, and input inductive current keeps linear and increases
Add, resonant inductance electric current is become just by negative, and primary side capacitance starts to discharge, and primary side capacitance voltage starts to reduce, isolating transformer secondary
Electric current is become just by negative, and secondary capacitance starts to charge up, the raising of secondary capacitance voltage, the raising of output capacitance voltage；
Phase III：
First switch pipe and second switch pipe are begun to turn off, and third switching tube is held off, and input inductive current starts linearly to subtract
Small, resonant inductance electric current also begins to reduce, but is still positive value；
The second parasitic capacitance that inductive current is inputted to second switch pipe charges, and the second parasitic capacitor voltage starts to increase；
Secondary current remains positive value, and to secondary capacitor charging, and secondary capacitance voltage increases, and the third of third switching tube is instead simultaneously
Union II pole pipe is begun to turn on, and starts to charge to clamp capacitor；
Fourth stage：
First switch pipe and second switch pipe are held off, and third switching tube is open-minded, and input inductive current keeps linear and reduces, humorous
The inductive current that shakes starts to reduce, but direction is that just, until being reduced to zero, secondary current holding positive value simultaneously gives secondary capacitor charging,
Secondary capacitance voltage increases, and output capacitance voltage increases, until resonant inductance electric current is reduced to zero；
5th stage：
First switch pipe and the shutdown of second switch pipe, third switching tube is open-minded, and resonant inductance electric current starts reversely to be increased by zero, pincers
Position capacitance starts to discharge；
Secondary current starts reversely to become negative value, and secondary capacitance voltage reduces, and input inductive current keeps linear and reduces；
6th stage：
Third switching tube turns off, and resonant inductance electric current starts to reduce, and direction is negative, and the energy stored in resonant inductance at this time is more than
The energy of second parasitic capacitance storage, the second parasitic capacitor voltage will be discharged to zero, at this time first switch pipe, second switch pipe
Anti-paralleled diode conducting, if opening first switch pipe, second switch pipe at this time, at first switch pipe, second switch pipe
In no-voltage opening state, another period starts.
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| CN201711100466.9A CN108183603B (en) | 2017-11-09 | 2017-11-09 | A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction |
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Cited By (5)
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| CN108667318A (en) * | 2018-07-03 | 2018-10-16 | 深圳市英可瑞科技股份有限公司 | A kind of rectification circuit and its control method |
| CN111487514A (en) * | 2020-04-20 | 2020-08-04 | 全球能源互联网研究院有限公司 | Method and system for extracting stray capacitance of IGBT dynamic parameter test circuit |
| CN112398330A (en) * | 2020-12-25 | 2021-02-23 | 重庆宏一电气有限公司 | Bridgeless PFC converter and control method thereof |
| CN113541466A (en) * | 2021-05-31 | 2021-10-22 | 广州金升阳科技有限公司 | Circuit and method for prolonging power-down retention time |
| CN114039482A (en) * | 2021-11-05 | 2022-02-11 | 广东恒翼能科技有限公司 | Single-stage resonant power factor correction circuit with bridgeless structure |
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| MAHDI GHASEMI等: "Analyzing a bridgeless single stage LLC resonant PFC converter controlled by frequency and pulse width modulations techniques", 《DRIVE SYSTEMS & TECHNOLOGIES CONFERENCE 》 * |
| MUNTASIR ALAM等: "A Soft-Switching Bridgeless AC–DC Power Factor Correction Converter", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》 * |
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| CN108667318A (en) * | 2018-07-03 | 2018-10-16 | 深圳市英可瑞科技股份有限公司 | A kind of rectification circuit and its control method |
| CN111487514A (en) * | 2020-04-20 | 2020-08-04 | 全球能源互联网研究院有限公司 | Method and system for extracting stray capacitance of IGBT dynamic parameter test circuit |
| CN112398330A (en) * | 2020-12-25 | 2021-02-23 | 重庆宏一电气有限公司 | Bridgeless PFC converter and control method thereof |
| CN113541466A (en) * | 2021-05-31 | 2021-10-22 | 广州金升阳科技有限公司 | Circuit and method for prolonging power-down retention time |
| CN114039482A (en) * | 2021-11-05 | 2022-02-11 | 广东恒翼能科技有限公司 | Single-stage resonant power factor correction circuit with bridgeless structure |
| CN114039482B (en) * | 2021-11-05 | 2024-01-30 | 广东恒翼能科技股份有限公司 | Single-stage resonance type power factor correction circuit with bridgeless structure |
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