CN109450242A - Single-phase interpolar inductance crisscross parallel circuit of power factor correction - Google Patents
Single-phase interpolar inductance crisscross parallel circuit of power factor correction Download PDFInfo
- Publication number
- CN109450242A CN109450242A CN201811067499.2A CN201811067499A CN109450242A CN 109450242 A CN109450242 A CN 109450242A CN 201811067499 A CN201811067499 A CN 201811067499A CN 109450242 A CN109450242 A CN 109450242A
- Authority
- CN
- China
- Prior art keywords
- inductance
- circuit
- boost
- branch circuit
- rectifier diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
-
- 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 present invention relates to a kind of single-phase interpolar inductance crisscross parallel circuit of power factor correction, including rectification circuit, main inductance, the first boost branch circuit and the 2nd boost branch circuit, output capacitance connecting with input power, the circuit end of the other end of the output capacitance, the circuit end of the first boost branch circuit and the 2nd boost branch circuit is connect with another output end of the rectification circuit；The first boost branch circuit is in parallel with the 2nd boost branch circuit, the first boost branch circuit includes the first inductance, the 2nd boost branch circuit includes the second inductance, and first inductance and second inductance form reverse coupled transformer.It can be realized the current uniform of two branches by the way of coupling transformer, to solve two Boost circuits uneven flow problem directly in parallel, keep the power device thermal stress of two-way in parallel identical, increase stabilization of equipment performance.
Description
Technical field
The present invention relates to power transmission field, in particular to a kind of single-phase interpolar inductance crisscross parallel PFC electricity
Road.
Background technique
With the development of power electronics, power grid is also higher and higher to the harmonic requirement of power electronic equipment, power factor school
Positive circuit is widely used.Single Boost circuit (booster circuit) is directlyed adopt in traditional single-phase medium and small power occasions to realize
PFC, as shown in Figure 1.Pass through control switch pipe S1Driving pulse realize PFC.
Single switching transistor described in Fig. 1 realizes that the scheme of PFC is only applicable to middle low power grade, with
Electrical equipment power grade is continuously improved at present, and there are single switching transistor current stress is excessive, inductive current ripple is big, magnetic member
The problems such as device difficult design, heat dissipation design difficulty is big, low efficiency, current harmonic content is high.
Summary of the invention
In view of this, the embodiment provides a kind of single-phase interpolar inductance crisscross parallel PFC electricity
Road can effectively reduce switching loss, improve efficiency comprising the rectification circuit that is connect with input power, with rectification circuit
The main inductance of one output end connection, the first boost branch circuit being connect with the main inductance other end and the 2nd boost points
The output capacitance that branch circuit, one end are connect with the first boost branch circuit and the 2nd boost branch circuit, it is described
The circuit end of the other end of output capacitance, the circuit end of the first boost circuit and the 2nd boost circuit with it is described whole
Another output end of current circuit connects；The first boost circuit and the 2nd boost circuit in parallel, the first boost
Circuit includes the first inductance, and the 2nd boost circuit includes the second inductance, first inductance and second inductance composition
Reverse coupled transformer.
Further, the first boost branch circuit further includes first switch tube, first diode, first electricity
Sense one end is connect with the main inductance, and the first inductance other end and the first switch tube and the first diode connect
It connects, the first diode other end is connect with the output capacitance, the other end of the first switch tube and the rectified current
Another output end connection on road；
The 2nd boost branch circuit further includes second switch, the second diode, second inductance one end and institute
Main inductance connection is stated, the second inductance other end is connect with the second switch and second diode, and described second
The diode other end is connect with the output capacitance, and the other end of the second switch is described another with the rectification circuit
Output end connection.
Further, it is input to the control signal of the control terminal of the first switch tube and is input to the second switch
Control terminal control signal waveform it is identical, phase difference is 180 degree.
Further, the rectification circuit includes the first rectifier diode, the second rectifier diode, third rectifier diode
With the 4th rectifier diode, the cathode and main inductance of the cathode of first rectifier diode and second rectifier diode
One end connection, the cathode of the third rectifier diode are connect with the anode of first rectifier diode, the 4th rectification
The cathode of diode is connect with the anode of second rectifier diode, the anode of the third rectifier diode and the described 4th
The anode of rectifier diode, the circuit end of the first boost branch circuit, the 2nd boost branch circuit circuit end
It is connected with the other end of the output capacitance；The anode of first rectifier diode and second rectifier diode
Anode with the input power for connecting.
Further, it is input to the control signal of the control terminal of the first switch tube and is input to the second switch
Control terminal control signal be PWM wave.
In the present invention in scheme, by way of driving phase shift 180 degree, the switch that the ripple of inductive current is twice is frequently
Rate can effectively reduce the volume and ripple current of inductance.It can be reached under same inductance with the switching frequency of half
To identical performance requirement, to reduce equipment volume and reduce switching loss, improve efficiency.
Since parallel branch is by the way of coupling transformer, make the maximum voltage amplitude output voltage at main inductance both ends
Half, and the voltage across the inductor of Fig. 1 scheme is that input voltage amplitude or output voltage subtract input voltage.Comparing can
, the ripple current of main inductance can be further decreased using the solution of the present invention, can reduce the sensibility reciprocal and volume of inductance.
It can be realized the current uniform of two branches by the way of coupling transformer, to solve two Boost circuits
Directly uneven flow problem in parallel, keeps the power device thermal stress of two-way in parallel identical, increases stabilization of equipment performance.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 is present invention single switching transistor Boost circuit structure chart in the prior art；
Fig. 2 is double Boost parallel circuit structure schematic diagrames in some embodiments of the invention；
Fig. 3 is the single-phase interpolar inductance crisscross parallel circuit of power factor correction structural representation in some embodiments of the invention
Figure；
Fig. 4 shows for signal in the single-phase interpolar inductance crisscross parallel circuit of power factor correction in some embodiments of the invention
It is intended to；
Fig. 5 is the single-phase interpolar inductance crisscross parallel circuit of power factor correction signal hint in some embodiments of the invention
Figure；
Fig. 6 is double Boost parallel circuit signal schematic representations in some embodiments of the invention；
Fig. 7 is the single-phase interpolar inductance crisscross parallel circuit of power factor correction structural representation in some embodiments of the invention
Figure.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
In implementation process, inventor has found that it is straight that two Boost circuits can be used in single-phase middle large-power occasions the present invention
Realization PFC in parallel is connect, as shown in Figure 2.Using double switch pipe (S1And S2) driving pulse phase shift 180 degree come it is real
Existing crisscross parallel control reduces the current stress of one-way switch pipe so that total input and output electric current ripple be made to reduce.
Using the scheme that two Boost circuits are directly in parallel described in Fig. 2, though two can be passed through to a certain extent
The mode of Boost parallel connection realizes shunting, reduces the current stress of single switching transistor, and Interleaved control can reduce input and output electric current
Ripple.But due to the polydispersity of different branch component, the electric current distribution that will lead to two branches is uneven, so as to cause power device
Part thermal stress is different, influences the service life and safety of equipment.In addition, two direct crisscross parallels of circuit, only reduce total
Input and output electric current ripple, for the current ripples on single shunt inductance there is no reducing, the high-frequency loss of inductance is still right
The efficiency of equipment has a major impact.
The embodiment of the present invention uses a main filter inductance, and the mode of a reverse coupled transformer crisscross parallel is realized
PFC, specifically, as shown in figure 3, circuit of the embodiment of the present invention forms: input power VinIt is inputted for mains,
Diode D1、D2、D3、D4Form rectification circuit, main inductance L1, reverse coupled transformer LM points are LMAAnd LMBTwo coils, two
Parallel branch switching tube S1, S2, diode D5, D6, output filter capacitor Co and load Rload.Wherein L1, LMA, D5, S2, Co group
At the first branch, L1, LMB, D6, S1, Co form second branch, two branches share main inductance L1, output capacitance Co.In addition,
The voltage for defining the both ends output capacitance Co is VO, main inductance L1The voltage at both ends is VL1, the diode D1Cathode and diode
D2Cathode and the inductance L1One end connection, the inductance L1The other end and the inductance LMAWith inductance LMBConnection, it is described
Inductance LMAThe other end and the switching tube S2With diode D5Connection, the inductance LMBThe other end and the switching tube S1With
Diode D6Connection, the diode D5With diode D6It is connect with the output capacitance Co, the other end of the output capacitance Co
With the switching tube S1With switching tube S2The other end connection, and with the diode D3、D4Anode connection, the output is electric
Hold both ends and the load R of ColoadConnection, the diode D3Cathode and the diode D1Anode connection, the diode
D4Cathode and the diode D2Anode connection, the diode D1Anode and the diode D2Anode and input
Power supply VinConnection, the inductance LMAWith inductance LMBForm reverse coupled transformer.
Circuit working method in the embodiment of the present invention:
As shown in figure 4, in a switch periods, it, can according to the relationship of the amplitude of input voltage and output voltage half
To be divided into two main operational phases:
First, as input voltage (V12) it is greater than the half of output voltageWhen work wave it is as shown in Figure 4.Wave
Shape is successively switching tube S from top to bottom1Driving pulse, switching tube S2Driving pulse, main inductance L1Current waveform, input electricity
Press V12(diode D1Cathode and diode D3Between voltage) and main inductance both end voltage VL1Waveform.
At this point, since two-way driving duty ratio is less than 50%, and using the control mode of crisscross parallel, so being not present
At the time of double switch pipe simultaneously turns on.For example, working as switching tube S1When opening, S2Switching tube closure, the current potential of C point is 0V at this time,
The current potential of B point is output voltage Vo.Due to using coupling transformer, so coupling transformer and main inductance L1Junction A point
Current potential is the output voltage of half.At this point, voltage across the inductor VL1For input voltage V12Subtract the half of output voltage
Main inductance stores energy, and electric current rises.When two switching tubes simultaneously turn off, the current potential of B, C two o'clock is simultaneously output voltage VO,
Then the current potential of A point is also VO, being added in voltage across the inductor is output voltage VOInput voltage is subtracted, inductance is provided to load at this time
Energy, inductive current reduce.In addition work as S2It is open-minded, S1Working condition when closure can be analyzed similarly.
The second, as input voltage (V12) it is less than the half of output voltageWhen waveform it is as shown in Figure 5.Waveform is from upper
It is successively switching tube S down1Driving pulse, switching tube S2Driving pulse, main inductance current waveform, input voltage and main electricity
Feel both end voltage waveform.
At this point, two-way driving duty ratio is greater than 50%, due to the Interleaved control mode of use, it will there are double switch pipes
At the time of simultaneously turning on.Circuit working state is as follows: as switching tube S1When opening, S2Switching tube closure, the current potential of C point is at this time
The current potential of 0V, B point is VO, due to using coupling transformer, so coupling transformer and main inductance L1The current potential of junction A point is
The half of output voltage.At this point, voltage across the inductor VL1The half that output voltage is subtracted for input voltage, due to inputting electricity at this time
Press (V12) it is less than the half of output voltageThe decline of main inductance electric current.When two switching tubes are opened simultaneously, B, C two
The current potential of point is simultaneously 0, then the current potential of A point is also 0, and being added in voltage across the inductor is input voltage, and inductive current increases at this time.
In addition work as S2It is open-minded, S1Working condition when closure can be analyzed similarly.
Technical effect of the invention:
The present invention realizes PFC using main inductance and coupling transformer, has a switch in two branch circuits
In the case that pipe is closed the shutdown of another switching tube, due to the effect of coupling transformer, keep the current potential of A point on the right side of main inductance defeated
Voltage half out effectively reduces the voltage for being added in voltage both ends, reduces ripple current.In addition, since two branches drive
Dynamic staggeredly 180 degree, makes twice of the current ripples frequency switching frequency on main inductance, further reduce the volume of inductance with
Current ripples.
The current work waveform of Fig. 2 scheme is as shown in fig. 6, waveform is successively from top to bottom, switching tube S1Driving pulse,
The driving pulse of switching tube S2, single shunt inductance current waveform, input voltage and single shunt inductance both end voltage waveform.
Compared with Fig. 4 and Fig. 5, it can be seen that current ripples of the invention close to Fig. 2 scheme half, for reduce
Inductance volume and increase efficiency have positive meaning.
The use of coupling transformer solves the uneven flow problem of two branches of Fig. 2 scheme, makes the main function of two branches
The fever of rate device is uniform, increases equipment dependability.
As shown in fig. 7, providing a kind of single-phase interpolar inductance crisscross parallel power factor in another embodiment of the present invention
Correcting circuit 100, including connect with input power 200 rectification circuit 110, connect with an output end of rectification circuit 110
Main inductance 130, the first boost branch circuit 140 that is connect with 130 other end of main inductance and the 2nd boost branch electricity
The output capacitance that road 150, one end are connect with the first boost branch circuit 140 and the 2nd boost branch circuit 150
160, the other end of the output capacitance 160, the circuit end of the first boost branch circuit 140 and the 2nd boost points
The circuit end of branch circuit 150 is connect with another output end of the rectification circuit 110；The first boost branch circuit 140 with
The 2nd boost branch circuit 150 is in parallel, and the first boost branch circuit 140 includes the first inductance 141, and described second
Boost branch circuit 150 includes the second inductance 151, and first inductance and second inductance form reverse coupled transformer.
The reverse coupled transformer makes the electric current of two branches uniform, so that device heating is uniform, increases equipment dependability.
Further, the first boost branch circuit 140 further includes first switch tube 142, first diode 143, institute
It states 141 one end of the first inductance to connect with the main inductance 130,141 other end of the first inductance and the first switch tube 142
It being connected with the first diode 143,143 other end of first diode is connect with the output capacitance 160, and described first
The other end of switching tube 142 is connect with another output end of the rectification circuit 110；
The 2nd boost branch circuit 150 further includes second switch 152, the second diode 153, second electricity
Feel 151 one end to connect with the main inductance 130,151 other end of the second inductance and the second switch 152 and described the
The connection of two diodes 153,153 other end of the second diode are connect with the output capacitance 160, the second switch
152 other end is connect with another output end of the rectification circuit 110.It is opened by tapping mode switching tube 142,152
It is disconnected, so that the voltage at 160 both ends of the output capacitance boosts.The output capacitance 160 can also filter output voltage
Wave.
Certainly, in order to adjust the ripple of output voltage, in the present invention, the quantity of switching tube, which be can according to need, is configured,
Two switching tubes are set such as on each road.
In order to reduce the ripple of output, so that ripple frequency increases, it is input to the control terminal of the first switch tube 141
Control signal is identical with the control signal waveform of control terminal for being input to the second switch 152, and phase difference is 180 degree, is adopted
It is controlled with crisscross parallel.
The rectification circuit 110 includes the first rectifier diode 111, the second rectifier diode 112, third rectifier diode
113 and the 4th rectifier diode 114, the yin of the cathode of first rectifier diode 111 and second rectifier diode 112
Pole is connected with one end of main inductance 130, the cathode of the third rectifier diode 113 and first rectifier diode 111
Anode connection, the cathode of the 4th rectifier diode 114 connect with the anode of second rectifier diode 112, and described the
The anode of the anode of three rectifier diodes 113 and the 4th rectifier diode 114, the first boost branch circuit 140
Circuit end, the 2nd boost branch circuit 150 circuit end connected with the other end of the output capacitance 160；It is described
112 anodes of the anode of the first rectifier diode 111 and second rectifier diode with the input power for connecting.
It is input to the control signal of the control terminal of the first switch tube 142 and is input to the second switch 152
The control signal of control terminal is PWM wave, and e.g., settable duty ratio is greater than 50% or less than 50%.
By way of driving phase shift 180 degree, the switching frequency that the ripple of inductive current is twice can effectively reduce
The volume and ripple current of inductance.Identical performance requirement can be reached under same inductance with the switching frequency of half,
To reduce equipment volume and reduce switching loss, improve efficiency.
Since parallel branch is by the way of coupling transformer, make the maximum voltage amplitude output voltage at inductance both ends
Half, and the voltage across the inductor of Fig. 1 and Fig. 2 scheme is that input voltage amplitude or output voltage subtract input voltage.Compare
It can obtain, the ripple current of main inductance can be further decreased using the solution of the present invention, can reduce the sensibility reciprocal and volume of inductance.
It can be realized the current uniform of two branches by the way of coupling transformer, to solve two Boost circuits
Directly uneven flow problem in parallel, keeps the power device thermal stress of two-way in parallel identical, increases stabilization of equipment performance.
In the present invention, term " first ", " second ", " third " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of single-phase interpolar inductance crisscross parallel circuit of power factor correction, which is characterized in that including being connect with input power
Rectification circuit, connect with an output end of rectification circuit main inductance, connect with the main inductance other end first
Boost branch circuit and the 2nd boost branch circuit, one end and the first boost branch circuit and the 2nd boost divide
The output capacitance of branch circuit connection, the other end of the output capacitance, the circuit end of the first boost branch circuit and described
The circuit end of 2nd boost branch circuit is connect with another output end of the rectification circuit；The first boost branch circuit
In parallel with the 2nd boost branch circuit, the first boost branch circuit includes the first inductance, and the 2nd boost divides
Branch circuit includes the second inductance, and first inductance and second inductance form reverse coupled transformer.
2. single-phase interpolar inductance crisscross parallel circuit of power factor correction according to claim 1, which is characterized in that described
First boost branch circuit further includes first switch tube, first diode, and first inductance one end and the main inductance connect
It connects, the first inductance other end is connect with the first switch tube and the first diode, and the first diode is another
End is connect with the output capacitance, and another output end of the other end of the first switch tube and the rectification circuit connects
It connects；
The 2nd boost branch circuit further includes second switch, the second diode, second inductance one end and the master
Inductance connection, the second inductance other end are connect with the second switch and second diode, the two or two pole
The pipe other end is connect with the output capacitance, another output of the other end of the second switch and the rectification circuit
End connection.
3. single-phase interpolar inductance crisscross parallel circuit of power factor correction according to claim 1 or 2, which is characterized in that
It is input to the control signal of the control terminal of the first switch tube and is input to the control letter of the control terminal of the second switch
Number waveform is identical, and phase difference is 180 degree.
4. single-phase interpolar inductance crisscross parallel circuit of power factor correction according to claim 1 or 2, which is characterized in that
The rectification circuit includes the first rectifier diode, the second rectifier diode, third rectifier diode and the 4th rectifier diode,
The cathode of first rectifier diode is connect with one end of the cathode of second rectifier diode and main inductance, the third
The cathode of rectifier diode is connect with the anode of first rectifier diode, the cathode of the 4th rectifier diode with it is described
The anode of second rectifier diode connects, the anode of the anode of the third rectifier diode and the 4th rectifier diode,
Circuit end, the circuit end of the 2nd boost branch circuit and the institute of the output capacitance of the first boost branch circuit
State other end connection；The anode of the anode of first rectifier diode and second rectifier diode is used for and the input
Power supply connection.
5. single-phase interpolar inductance crisscross parallel circuit of power factor correction according to claim 1 or 2, which is characterized in that
It is input to the control signal of the control terminal of the first switch tube and is input to the control letter of the control terminal of the second switch
Number be PWM wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811067499.2A CN109450242A (en) | 2018-09-13 | 2018-09-13 | Single-phase interpolar inductance crisscross parallel circuit of power factor correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811067499.2A CN109450242A (en) | 2018-09-13 | 2018-09-13 | Single-phase interpolar inductance crisscross parallel circuit of power factor correction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109450242A true CN109450242A (en) | 2019-03-08 |
Family
ID=65530584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811067499.2A Pending CN109450242A (en) | 2018-09-13 | 2018-09-13 | Single-phase interpolar inductance crisscross parallel circuit of power factor correction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109450242A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301574A (en) * | 2011-07-01 | 2011-12-28 | 华为技术有限公司 | PFC convertor and pfc conversion device |
| CN106936306A (en) * | 2015-12-30 | 2017-07-07 | 华为技术有限公司 | Polymorphic totem pfc circuit |
-
2018
- 2018-09-13 CN CN201811067499.2A patent/CN109450242A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301574A (en) * | 2011-07-01 | 2011-12-28 | 华为技术有限公司 | PFC convertor and pfc conversion device |
| CN106936306A (en) * | 2015-12-30 | 2017-07-07 | 华为技术有限公司 | Polymorphic totem pfc circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hu et al. | A control strategy and design method for interleaved LLC converters operating at variable switching frequency | |
| CN105720840B (en) | Power conversion unit and its setting method | |
| Narimani et al. | A new interleaved three-phase single-stage PFC AC–DC converter | |
| CN107959432B (en) | A kind of clamp circuit and with promoting step-up ratio and inhibit the Y source inventer of DC bus-bar voltage spike | |
| CN105932880A (en) | Magnetizing Current Based Control Of Resonant Converters | |
| CN106981990B (en) | Unidirectional isolation type multistage direct current-direct current electric energy conversion device and method thereof | |
| CN102594152B (en) | Series-type half-bridge DC-DC (direct current) converter | |
| CN102723880A (en) | Alternating current-to-direct current circuit | |
| CN103795237A (en) | Bridge-free voltage reduction APFC circuit | |
| CN109889048A (en) | A kind of isolation bidirectional DC-DC converter | |
| CN110768552A (en) | Double-coil coupling inductance type impedance source inverter for inhibiting DC link voltage peak | |
| CN201690360U (en) | Shunting type active power factor correcting circuit | |
| CN104022632B (en) | Input zero ripple converter | |
| CN205407613U (en) | Monopole high power factor recommends two circuit that are just swashing | |
| CN107222096A (en) | Isolated CUK push-pull topologies in parallel | |
| CN102611318A (en) | Continuous adjustable power supply with variable structure and constant power | |
| CN202444423U (en) | Serial semi-bridge DC (Direct Current)-DC converter | |
| CN112350583A (en) | Current type push-pull bridge type soft switching bidirectional direct current converter | |
| CN209134309U (en) | A kind of three-phase alternating current-direct current buck translation circuit | |
| CN109245547B (en) | A kind of mixed-rectification formula Zero-voltage switch full-bridge direct current converter | |
| CN100391091C (en) | Power supply circuit and electronic device | |
| CN109194144A (en) | A kind of double positive activation type booster circuits of crisscross parallel | |
| CN109450242A (en) | Single-phase interpolar inductance crisscross parallel circuit of power factor correction | |
| CN115441757A (en) | Five-level PWM rectifier and power supply equipment | |
| CN108683330A (en) | A kind of three switching tube three-phase pfc circuit control methods and serial topological structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |
|
| RJ01 | Rejection of invention patent application after publication |