CN202034915U - Wide-range input continuously-adjustable active soft switch bridgeless PFC (power factor correction) converter - Google Patents
Wide-range input continuously-adjustable active soft switch bridgeless PFC (power factor correction) converter Download PDFInfo
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- CN202034915U CN202034915U CN2011200912875U CN201120091287U CN202034915U CN 202034915 U CN202034915 U CN 202034915U CN 2011200912875 U CN2011200912875 U CN 2011200912875U CN 201120091287 U CN201120091287 U CN 201120091287U CN 202034915 U CN202034915 U CN 202034915U
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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
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- 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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Abstract
The utility model discloses a wide-range input continuously-adjustable active soft switch bridgeless BOOST PFC (power factor correction) converter, which comprises a zero-voltage converting active soft switch bridgeless power factor correction circuit and a control circuit thereof. The zero-voltage converting active soft switch bridgeless power factor correction circuit comprises a 2nd Dual Boost PFC circuit and an auxiliary switch network. The wide-range input continuously-adjustable active soft switch bridgeless PFC converter has the advantages that the wide-range input continuously-adjustable active soft switch bridgeless PFC converter can acquire continuously-adjustable output voltage values by means of adjusting voltage sampling resistance of the bridgeless Boost PFC circuit, meanwhile, alternating voltage of an input end varies from 85 volts to 265 volts without affecting the output voltage value of the bridgeless PFC converter and load capability, on-state loss of the circuits is reduced, and overall efficiency can be improved.
Description
Technical field
The utility model relates to a kind of active soft switching Bridgeless power factor circuit correcting circuit of Zero voltage transition, the continuously adjustable active soft switching Bridgeless power factor correction of especially a kind of input wide region based on this active soft switching Bridgeless power factor circuit correcting circuit (BOOST PFC) converter.
Background technology
No bridge BOOST pfc circuit owing to omitted the input rectifying bridge, has significantly reduced conduction loss with respect to traditional power factor correction (BOOST PFC) circuit, and efficient is promoted about 1～2%.Particularly do not have bridge BOOST pfc circuit and improve topology---novel pair of inductance Bridgeless power factor correction (2
NdDual Boost PFC) circuit, finely solved this defective of electromagnetic interference that the Power Groud level causes with respect to the earth in the no bridge BOOST pfc circuit common mode current causes, make no bridge BOOST pfc circuit break away from the situation of only carrying out theoretical research in the past, had the prospect of commercial Application in the laboratory.
Fig. 1 is one 2
NdDual Boost pfc circuit, described circuit comprise the first diode D
1, the second diode D
2, the 3rd diode D
aWith the 4th diode D
b, the first master power switch pipe S
1, the second master power switch pipe S
2, the first diode D in the circuit
1Anode meets the first master power switch pipe S altogether
1Drain electrode, the second diode D
2Meet the second master power switch pipe S
2Drain electrode, its common cathode meets filter capacitor C
0One end; Input ac power U
SOne termination, the first boost inductance L
1With the 3rd diode D
aCommon cathode, another termination second boost inductance L
2With the 4th diode D
bCommon cathode; The 3rd diode D
aBe total to anode, the 4th diode D
bBe total to anode, the first master power switch pipe S
1The source electrode and the second master power switch pipe S
2Source electrode be connected to filter capacitor C
0The other end.Load R
0Be connected to filter capacitor C
0Two ends.
Its course of work is: the positive half cycle with input supply voltage is an example, at circuit inductance electric current consecutive hours shown in Figure 1 two kinds of mode of operations is arranged, respectively shown in Fig. 2 (a), Fig. 2 (b), as the first master power switch pipe S
1During conducting, source current is by the first boost inductance L
1, the first master power switch pipe S
1With the 4th diode D
bConstitute the loop, the first boost inductance L
1Energy storage, inductive current i
L1Linear growth is seen Fig. 2 (a); As the first master power switch pipe S
1When ending, source current is by the first boost inductance L
1, the first diode D
1, the 4th diode D
b, filter capacitor C
0With load R
0Constitute the loop, the source current and the first boost inductance L
1The energy storage electric current to filter capacitor C
0With load R
0Discharge.The negative half period mode of operation of input supply voltage is shown in Fig. 2 (c), Fig. 2 (d).
2
NdDual Boost pfc circuit has reduced the electromagnetic interference that circuit of power factor correction conduction loss and common mode current cause, but unresolved switching loss problem, the important measures that reduce switching loss are soft switch techniques, and wherein Zero voltage transition (ZVT) soft switch technique is one of most important method.The utility model is the no bridge BOOST pfc circuit that adopts Zero voltage transition (ZVT) soft switch technique.
Summary of the invention
The purpose of this utility model is to provide the continuously adjustable active soft switching non-bridge PFC of a kind of input wide region converter, and it is big that this converter overcomes in the prior art switching tube and diode on-state loss, the problem that overall efficiency is not high.
The technical solution of the utility model is: the continuously adjustable active soft switching non-bridge PFC of a kind of input wide region converter, this converter comprises the active soft switching Bridgeless power factor circuit correcting circuit and the control circuit composition thereof of Zero voltage transition, the active soft switching Bridgeless power factor circuit correcting circuit circuit of Zero voltage transition comprises 2nd Dual Boost pfc circuit and an auxiliary switch network, described 2
NdDual Boost pfc circuit comprises first diode, second diode, the 7th diode and the 8th diode, the first master power switch pipe, the second master power switch pipe, first diode is total to the drain electrode that anode connects the first master power switch pipe in the circuit, and second diode connects the drain electrode of the second master power switch pipe; Input ac power one termination, first boost inductance and the 7th diode common cathode, another termination second boost inductance and the 4th diode common cathode, first diode, the second diode common cathode are received filter capacitor one end; The source electrode of the 7th diode, the 8th diode, the first master power switch pipe and the second master power switch pipe is connected to the filter capacitor other end; Load is connected to the filter capacitor two ends; Described auxiliary switch network comprises auxiliary switch, resonant inductance, first resonant capacitance, second resonant capacitance, the 3rd resonant capacitance, the 3rd diode, the 4th diode, the 5th diode, the 6th diode, the 9th diode and the tenth diode; The 9th diode, the tenth diode inverse parallel are in two master power switch pipe two ends, and first resonant capacitance, second resonant capacitance are parallel to two master power switch pipe two ends; The 3rd diode, the 4th diode anode altogether are connected to the input ac power two ends, and its common cathode is connected to resonant inductance and the 3rd resonant capacitance one end; The resonant inductance other end is connected to the common anode of auxiliary switch drain electrode and the 5th diode, and the 5th diode common cathode connects the common anode of the 3rd resonant capacitance other end and the 6th diode, and the common cathode of the 6th diode is received filter capacitor one end; The common anode of the source electrode of auxiliary switch, the 9th diode and the tenth diode, first resonant capacitance and second resonant capacitance are connected to the filter capacitor other end together; Load is connected to the filter capacitor two ends; The control circuit of the continuously adjustable active soft switching non-bridge PFC of the input wide region converter that the present invention proposes comprises Cycle Control chip, voltage detecting circuit, current detection circuit, voltage feedback circuit and gate drive circuit; The voltage detecting circuit input is connected to the input ac power two ends by transformer and rectifier bridge; The current detection circuit input is connected to an end of input ac power by current sensor; The voltage feedback circuit input is connected to the load anode by voltage divider; Gate drive circuit adopts the RC delay circuit and makes the service time of auxiliary switch be ahead of the service time of the first master power switch pipe and the second master power switch pipe with gate circuit that door, XOR gate are formed, and auxiliary switch and the first master power switch pipe, the second master power switch pipe are staggered open-minded.
The 9th diode and the tenth diode can be the body diodes of the described first master power switch pipe and the second master power switch pipe.
First resonant capacitance, second resonant capacitance can be the parasitic capacitances of the described first master power switch pipe and the second master power switch pipe.
All the other diodes described in the circuit are quick revovery diode.
Cycle Control chip described in the circuit can be IR1150S.
Advantage of the present utility model is: the continuously adjustable active soft switching non-bridge PFC of input wide region converter can obtain continuously adjustable output voltage values by regulating no bridge Boost pfc circuit voltage sampling resistor value, and the input alternating voltage changes between 85V～265V does not simultaneously influence non-bridge PFC converter output voltage and carrying load ability.Because main open pipe realized that ZVT is open-minded, booster diode is a zero-current switching, and the voltage of two master power switch pipes and current stress be increase not, so the on-state loss of circuit reduces, and overall efficiency is improved.
Description of drawings
Fig. 1 is one 2
NdDual Boost pfc circuit schematic diagram;
Fig. 2 is 2
NdFive kinds of working mode figures of Dual Boost pfc circuit;
Fig. 3 is the utility model inverter main circuit schematic diagram;
Fig. 4 is the utility model converter circuit schematic diagram;
Fig. 5 is the fundamental diagram of the utility model converter in one-period;
Fig. 6 is the seven kind operation modes of the utility model converter in one-period;
With input ac power U
SPositive half wave is an example, the work schedule of the soft switch Bridgeless power factor circuit correcting circuit of described Zero voltage transition in a switch periods as shown in Figure 5, Fig. 5 (a) is master power switch pipe S
1Gate drive voltage, Fig. 5 (b) is auxiliary switch S
rGate drive voltage, Fig. 5 (c) is master power switch pipe S
1Drain-source and the voltage between the source electrode, Fig. 5 (d) is master power switch pipe S
1Current waveform, Fig. 5 (e) is booster diode D
1The both end voltage oscillogram, Fig. 5 (f) is booster diode D
1Current waveform figure, Fig. 5 (g) is auxiliary switch S
rCurrent waveform figure, Fig. 5 (h) is resonant inductance L
rCurrent waveform figure, Fig. 5 (i) is resonant capacitance C
rThe voltage waveform at two ends, Fig. 5 (g) is for flowing through the 6th diode D
6Current waveform.
Fig. 6 (a)---Fig. 6 (g) has seven kinds of operation modes in a switch periods.
Embodiment
The main circuit of the continuously adjustable active soft switching non-bridge PFC of input wide region converter comprises 2
NdDual Boost pfc circuit and an auxiliary switch network, as shown in Figure 3.Described 2
NdDual Boost pfc circuit comprises the first diode D
1, the second diode D
2, the 7th diode D
aWith the 8th diode D
b, the first master power switch pipe S
1, the second master power switch pipe S
2, the first diode D in the circuit
1Anode meets the first master power switch pipe S altogether
1Drain electrode, the second diode D
2Meet the second master power switch pipe S
2Drain electrode; Input ac power U
SOne termination, the first boost inductance L
1With the 7th diode common cathode D
a, another termination second boost inductance L
2With the 4th diode D
bCommon cathode.Described auxiliary switch network comprises auxiliary switch S
r, resonant inductance L
r, the first resonant capacitance C
S1, the second resonant capacitance C
S2, the 3rd resonant capacitance C
r, the 3rd diode D
3, the 4th diode D
4, the 5th diode D
5, the 6th diode D
6, the 9th diode D
S1With the tenth diode D
S2The 9th diode D
S1, the tenth diode D
S2Inverse parallel is in two master power switch pipe two ends, the first resonant capacitance C
S1, the second resonant capacitance C
S2Be parallel to two master power switch pipe two ends; The 3rd diode D
3, the 4th diode D
4Anode is connected to input ac power U altogether
STwo ends, the 3rd diode D
3, the 4th diode D
4Common cathode is connected to resonant inductance L
rWith the 3rd resonant capacitance C
rOne end; Resonant inductance L
rThe other end is connected to auxiliary switch S
rDrain electrode and the 5th diode D
5Common anode, the 5th diode D
5Common cathode meet the 3rd resonant capacitance C
rThe other end and the 6th diode D
6Common anode, the 6th diode D
6Common cathode receive filter capacitor C
0One end; Auxiliary switch S
rSource electrode, the 9th diode D
S1With the tenth diode D
S2Common anode, the first resonant capacitance C
S1With the second resonant capacitance C
S2One end is connected to filter capacitor C together
0The other end; Load R
0Be connected to filter capacitor C
0Two ends.
The control circuit of the continuously adjustable active soft switching non-bridge PFC of the input wide region converter that the present invention proposes comprises Cycle Control chip, voltage detecting circuit, current detection circuit, voltage feedback circuit and gate drive circuit.The voltage detecting circuit input is by transformer T
rWith rectifier bridge D
rBe connected to input ac power U
STwo ends; The current detection circuit input is connected to input ac power U by current sensor
SAn end; The voltage feedback circuit input is by voltage divider K
PBe connected to load R
0Anode; Gate drive circuit adopts the RC delay circuit and makes auxiliary switch S with gate circuit that door, XOR gate are formed
rService time be ahead of the first master power switch pipe S
1With the second master power switch pipe S
2Service time, and auxiliary switch S
rWith the first master power switch pipe S
1, the second master power switch pipe S
2Staggered open-minded.
The described first resonant capacitance C of non-bridge PFC converter of the present invention
S1, the second resonant capacitance C
S2Can be the described first master power switch pipe S
1With the second master power switch pipe S
2Parasitic capacitance;
The 9th diode D described in the non-bridge PFC converter of the present invention
S1With the tenth diode D
S2Can be the described first master power switch pipe S
1With the second master power switch pipe S
2Body diode;
All the other diodes described in the non-bridge PFC converter of the present invention are quick revovery diode;
Cycle Control chip described in the non-bridge PFC converter of the present invention can be IR1150S.
Mode 1 (t
6～t
0), as Fig. 6 (a):
At t
0Constantly, soft switch is not worked, S
1, S
2, S
rAll turn-off, because L
1Existence, I
L1Can think constant.Under this mode, i
D1=I
L1, v
S1=V
0
Mode 2 (t
1～t
2), as Fig. 6 (b):
At t
1Constantly, S
rConducting is because L
rExistence, so S
rElectric current can not suddenly change S
rIt is zero current turning-on.Under this mode, along with i
LrContinuous increase, i
D1Constantly reduce, up to i
LrReach I
L1, D
1Zero-current switching.
Mode 3 (t
2～t
3), as Fig. 6 (c):
At t
2Constantly, i
D1=0, D
1Zero-current switching.Under this mode, C
S1Begin discharge, v
CS1(t
1)=V
0, this moment C
S1Discharge, L
rElectric current increases.
Mode 4 (t
3～t
4), as Fig. 6 (d):
At t
3Constantly, v
S1=0, this moment main switch S
1Body diode D
S1Open-minded, under this mode, i
LrThe beginning linearity reduces i
S1Beginning is linear to increase main switch S
1Under this mode, reached the condition that ZVS opens.
Mode 5 (t
4～t
5), as Fig. 6 (e):
At t
4Constantly, S
rTurn-off, simultaneously S
1No-voltage is open-minded, because C
rExistence, S
rVoltage can not suddenly change, its turn-off characteristic is good, is similar to no-voltage and turn-offs.In this mode, L
rWith C
2Beginning resonance.
Mode 6 (t
5～t
6), as Fig. 6 (f):
At t
5Constantly, L
rDischarge finishes, and ZVT does not work in the loop.In this mode, i
Lr=0, if v
Cr〉=U
0, v then
CrBe clamped at V
0
Mode 7 (t
6～t
7), as Fig. 6 (g):
At t
6Constantly, C
S1Begin charging, simultaneously C
rBegin discharge.In this mode, because C
S1Existence, main switch S
1Soft shutoff is to t
7Constantly, v
CS1=V
0, v
Cr=0.To i
Cr=0 o'clock, this mode finished.C
S1Charging is finished, v
CS1=V
0, this moment booster diode D
1Realize that ZVS is open-minded; While C
2Discharge finishes, i
C2=0, the ZVT auxiliary branch is not worked.At this moment, i
Lr=0, v
Cr=0, circuit is got back to next turn-on cycle, S
rConducting again begins the work of following one-period.
By analysis to novel Zero voltage transition active soft switching Bridgeless power factor circuit correcting circuit, the voltage and current stress of two master power switch pipes does not increase, simultaneously the master power switch pipe has been realized that zero-voltage zero-current is opened with no-voltage and has been turn-offed, booster diode has also been realized soft break-make, reduce the on-state loss of circuit, improved overall efficiency.
Claims (5)
1. the continuously adjustable active soft switching of input wide region does not have bridge BOOST pfc converter, it is characterized in that: this converter comprises the active soft switching Bridgeless power factor circuit correcting circuit and the control circuit composition thereof of Zero voltage transition; The active soft switching Bridgeless power factor circuit correcting circuit circuit of Zero voltage transition comprises 2
NdDual Boost pfc circuit and an auxiliary switch network, described 2
NdDual Boost pfc circuit comprises the first diode (D
1), the second diode (D
2), the 7th diode (D
a) and the 8th diode (D
b), the first master power switch pipe (S
1), the second master power switch pipe (S
2), the first diode (D in the circuit
1) altogether anode meet the first master power switch pipe (S
1) drain electrode, the second diode (D
2) meet the second master power switch pipe (S
2) drain electrode; Input ac power (U
S) the termination first boost inductance (L
1) and the 7th diode (D
a) common cathode, another termination second boost inductance (L
2) and the 4th diode (D
b) common cathode, the first diode (D
1), the second diode (D
2) common cathode receives filter capacitor one end; The 7th diode (D
a), the 8th diode (D
b), the first master power switch pipe (S
1) and the second master power switch pipe (S
2) source electrode be connected to filter capacitor (C
0) other end; Load (R
0) be connected to filter capacitor (C
0) two ends; Described auxiliary switch network comprises auxiliary switch (S
r), resonant inductance (L
r), the first resonant capacitance (C
S1), the second resonant capacitance (C
S2), the 3rd resonant capacitance (C
r), the 3rd diode (D
3), the 4th diode (D
4), the 5th diode (D
5), the 6th diode (D
6), the 9th diode (D
S1) and the tenth diode (D
S2); The 9th diode (D
S1), the tenth diode (D
S2) inverse parallel is in two master power switch pipe two ends, the first resonant capacitance (C
S1), the second resonant capacitance (C
S2) be parallel to two master power switch pipe two ends; The 3rd diode (D
3), the 4th diode (D
4) altogether anode be connected to input ac power (U
S) two ends, its common cathode is connected to resonant inductance (L
r) and the 3rd resonant capacitance (C
r) end; Resonant inductance (L
r) other end is connected to auxiliary switch (S
r) drain electrode and the 5th diode (D
5) common anode, the 5th diode (D
5) common cathode meets the 3rd resonant capacitance (C
r) other end and the 6th diode (D
6) common anode, the 6th diode (D
6) common cathode receive filter capacitor (C
0) end; Auxiliary switch (S
r) source electrode, the 9th diode (D
S1) and the tenth diode (D
S2) common anode, the first resonant capacitance (C
S1) and the second resonant capacitance (C
S2) be connected to filter capacitor (C together
0) other end; Load (R
0) be connected to filter capacitor (C
0) two ends; The control circuit of the continuously adjustable active soft switching non-bridge PFC of input wide region converter comprises Cycle Control chip, voltage detecting circuit, current detection circuit, voltage feedback circuit and gate drive circuit; The voltage detecting circuit input is by transformer (T
r) and rectifier bridge (D
r) be connected to input ac power (U
S) two ends; The current detection circuit input is connected to input ac power (U by current sensor
S) an end; The voltage feedback circuit input is by voltage divider (K
P) be connected to load (R
0) anode; Gate drive circuit adopts the RC delay circuit and makes auxiliary switch (S with gate circuit that door, XOR gate are formed
r) service time be ahead of the first master power switch pipe (S
1) and the second master power switch pipe (S
2) service time, and auxiliary switch (S
r) and the first master power switch pipe (S
1), the second master power switch pipe (S
2) staggered open-minded.
2. according to the continuously adjustable active soft switching non-bridge PFC of the described input wide region of claim 1 converter, it is characterized in that: the 9th diode (D
S1) and the tenth diode (D
S2) can be the described first master power switch pipe (S
1) and the second master power switch pipe (S
2) body diode.
3. according to the continuously adjustable active soft switching non-bridge PFC of the described input wide region of claim 1 converter, it is characterized in that: the first resonant capacitance (C
S1), the second resonant capacitance (C
S2) can be the described first master power switch pipe (S
1) and the second master power switch pipe (S
2) parasitic capacitance.
4. according to the continuously adjustable active soft switching non-bridge PFC of the described input wide region of claim 1 converter, it is characterized in that: all the other diodes described in the circuit are quick revovery diode.
5. according to the continuously adjustable active soft switching non-bridge PFC of the described input wide region of claim 1 converter, it is characterized in that: the Cycle Control chip described in the circuit can be IR1150S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200912875U CN202034915U (en) | 2011-03-31 | 2011-03-31 | Wide-range input continuously-adjustable active soft switch bridgeless PFC (power factor correction) converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200912875U CN202034915U (en) | 2011-03-31 | 2011-03-31 | Wide-range input continuously-adjustable active soft switch bridgeless PFC (power factor correction) converter |
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| Publication Number | Publication Date |
|---|---|
| CN202034915U true CN202034915U (en) | 2011-11-09 |
Family
ID=44897199
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200912875U Expired - Fee Related CN202034915U (en) | 2011-03-31 | 2011-03-31 | Wide-range input continuously-adjustable active soft switch bridgeless PFC (power factor correction) converter |
Country Status (1)
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| CN (1) | CN202034915U (en) |
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| CN102832802A (en) * | 2012-09-10 | 2012-12-19 | 华为技术有限公司 | PFC (power factor correction) circuit, communication power supply equipment and control method of PFC circuit |
| CN103856037A (en) * | 2012-12-05 | 2014-06-11 | 三星电机株式会社 | Driver device for power factor correction circuit |
| CN103904898A (en) * | 2014-04-18 | 2014-07-02 | 东南大学 | Low-noise efficient isolating converter suitable for power supply for medical detection and control method thereof |
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| CN106165283A (en) * | 2014-01-22 | 2016-11-23 | 香港大学 | Electronic installation and control method for the conversion of high-frequency AC DC |
| CN106165283B (en) * | 2014-01-22 | 2020-02-14 | 香港大学 | Electronic device and control method for high frequency AC-DC conversion |
| CN103904898A (en) * | 2014-04-18 | 2014-07-02 | 东南大学 | Low-noise efficient isolating converter suitable for power supply for medical detection and control method thereof |
| CN103904898B (en) * | 2014-04-18 | 2017-05-03 | 东南大学 | Low-noise efficient isolating converter suitable for power supply for medical detection and control method thereof |
| CN104852567A (en) * | 2015-05-20 | 2015-08-19 | 常州信息职业技术学院 | Totem-pole bridgeless power factor correction circuit of soft switch |
| CN106230240A (en) * | 2016-04-21 | 2016-12-14 | 上海麟荣电子技术有限公司 | Asymmetric formula MOSFET parallel circuit |
| WO2018133605A1 (en) * | 2017-01-20 | 2018-07-26 | 中国科学院地质与地球物理研究所 | Soft switch control circuit for boost pfc converter |
| CN107070195A (en) * | 2017-03-22 | 2017-08-18 | 哈尔滨工业大学深圳研究生院 | The totem circuit of power factor correction of half power frequency period resonant type soft-switch structure |
| CN109687720A (en) * | 2018-11-23 | 2019-04-26 | 南京航空航天大学 | A kind of wide input voltage range resonant type converter apparatus and its control method |
| CN109687720B (en) * | 2018-11-23 | 2021-01-15 | 南京航空航天大学 | Wide-input-voltage-range resonant type conversion device and control method thereof |
| CN110401365A (en) * | 2019-08-12 | 2019-11-01 | 无锡派微科技有限公司 | GaN non-bridge PFC power module for high-power charger |
| CN110401365B (en) * | 2019-08-12 | 2020-12-01 | 无锡英诺赛思科技有限公司 | GaN bridgeless PFC power module for high-power charger |
| CN112311222A (en) * | 2020-09-17 | 2021-02-02 | 江苏大学 | Improved bridgeless DBPFC converter based on composite prediction current control and control method |
| CN113541486A (en) * | 2021-06-23 | 2021-10-22 | 南京军曜科技有限公司 | Interleaved diode capacitor network high-gain ZVT (zero voltage zero volt) direct current converter and auxiliary circuit |
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