CN110350781B - Non-resonance soft switching circuit based on capacitance branch circuit - Google Patents

Non-resonance soft switching circuit based on capacitance branch circuit Download PDF

Info

Publication number
CN110350781B
CN110350781B CN201910482892.6A CN201910482892A CN110350781B CN 110350781 B CN110350781 B CN 110350781B CN 201910482892 A CN201910482892 A CN 201910482892A CN 110350781 B CN110350781 B CN 110350781B
Authority
CN
China
Prior art keywords
capacitor
inductor
electrode
circuit
switching circuit
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.)
Active
Application number
CN201910482892.6A
Other languages
Chinese (zh)
Other versions
CN110350781A (en
Inventor
李虹
曾洋斌
王文财
张波
郑琼林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Jiaotong University
Original Assignee
Beijing Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Jiaotong University filed Critical Beijing Jiaotong University
Priority to CN201910482892.6A priority Critical patent/CN110350781B/en
Publication of CN110350781A publication Critical patent/CN110350781A/en
Application granted granted Critical
Publication of CN110350781B publication Critical patent/CN110350781B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • 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
    • 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 non-resonance soft switching circuit based on a capacitance branch circuit, which comprises: the inductor, the auxiliary inductor, the switching tube, the capacitor and the shunt branch circuit are connected, wherein one end of the inductor, one end of the first electrode of the switching tube and one end of the auxiliary inductor are connected with one end of the shunt branch circuit, the other end of the inductor is connected with a first external circuit, a second electrode of the switching tube is connected with a second external circuit, the other end of the shunt branch circuit is connected with a third external circuit, the other end of the auxiliary inductor is connected with one end of the capacitor, and the other end of the capacitor is connected with a fourth external circuit; and when the inductor meets a first preset condition, the capacitor meets a second preset condition and the auxiliary inductor meets a third preset condition, controlling the ZCS of a switching tube and the ZCS of a diode in the power electronic converter to be switched on. The soft switching circuit realizes ZCS switching-on of a switching tube and ZCS switching-off of a diode by using a resonance-free technology, and does not increase voltage stress and current stress.

Description

Non-resonance soft switching circuit based on capacitance branch circuit
Technical Field
The invention relates to the technical field of power electronics, in particular to a non-resonance soft switching circuit based on a capacitor branch circuit.
Background
With the development of power electronic conversion technology, high frequency, high power density and high efficiency become the future power electronic and technical direction. However, when the conventional power electronic converter works in a hard switching state, the switching loss of the converter is large, and the efficiency of the converter is influenced. Meanwhile, the switching loss is proportional to the switching frequency, so that the development of high frequency and high power density of the converter is limited. The soft switching technology is concerned with because it can realize ZVS (Zero Voltage Switch) switching on, ZCS (Zero Current Switch) switching off of a switching tube and ZCS switching off of a diode, reducing switching loss, and making a converter have higher efficiency, higher switching frequency and higher power density.
Conventional soft switching techniques include a quasi-resonant circuit, a zero-switching PWM (Pulse Width Modulation) circuit, and a zero-switching PWM circuit. The quasi-resonance soft switching circuit enables voltage and current in the converter to work in a resonance state, so that the converter has higher current peak value and voltage peak value, and the stress of devices is increased. Meanwhile, the circuit works in a frequency modulation state, and the converter is not easy to control. Both the zero-switch PWM circuit and the zero-conversion PWM circuit can realize soft switching, but the voltage stress and the current stress are increased due to the existence of resonance. In addition, the two circuits need more devices to realize soft switching, and the complexity and the cost of the circuit are increased.
Therefore, the soft switching conversion circuit applied to the power electronic converter still needs to be further researched and developed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, the present invention proposes a soft resonant switching circuit based on a capacitive branch, which uses a non-resonant technique to achieve ZCS switching on of the switching tube and ZCS switching off of the diode without increasing voltage stress and current stress.
In order to achieve the above object, an embodiment of an aspect of the present invention provides a non-resonant soft switching circuit based on a capacitive branch, including: inductor L1Auxiliary inductor La1Switch tube S1Capacitor C1And a shunt branch, wherein the inductor L1One end of the switch tube S1The auxiliary inductor L, and a first electrode ofa1One end of each of the first and second inductors is connected to one end of the shunt branch, and the inductor L1Is connected with a first external circuit, the switching tube S1The second electrode of the shunt branch is connected with a second external circuit, the other end of the shunt branch is connected with a third external circuit, and the auxiliary inductor La1And the other end of the capacitor C1Is connected to one end of the capacitor C1The other end of the first and second external circuits is connected with a fourth external circuit; at the inductance L1The capacitor C satisfies a first preset condition1Satisfies a second predetermined condition and the auxiliary inductor La1And when a third preset condition is met, the ZCS of the switching tube and the ZCS of the diode in the power electronic converter are controlled to be switched on.
The resonance-free soft switching circuit based on the capacitor branch circuit can realize the ZCS switching-on of the switching tube and the ZCS switching-off of the diode in the power electronic converter under the condition of not generating resonance, and can effectively reduce the switching loss and inhibit the reverse recovery current of the diode; meanwhile, the voltage and current stress of a semiconductor device in the converter can not be increased, so that the device stress can be reduced, the switching loss can be reduced, the high frequency of the converter can be realized, the converter is suitable for high-efficiency power conversion occasions, and the converter can be well applied to a power electronic converter, so that the efficiency of the power electronic converter is higher, and the power density is lower.
In addition, the resonance-free soft switching circuit based on the capacitive branch circuit according to the above embodiment of the present invention may further have the following additional technical features:
further, in an embodiment of the present invention, the switch tube S is disposed in the switch tube1During the turn-off period, the shunt branch and the auxiliary inductor La1Share the flow through the inductance L1Current of (I)L1。
Further, in one embodiment of the present invention, the first to fourth external circuits are circuits other than the soft switching circuit in the power electronic converter.
Further, in an embodiment of the present invention, the auxiliary inductor L is disposed in the auxiliary inductor La1When a third preset condition is met, the auxiliary inductor La1And the capacitor C1No resonance occurs.
Further, in an embodiment of the present invention, the switch tube S1And may be an N-type MOSFET or an IGBT.
Further, in an embodiment of the present invention, the switch tube S1And when the MOSFET is an N-type MOSFET, the first electrode is a drain electrode, and the second electrode is a source electrode.
Further, in an embodiment of the present invention, the switch tube S1In the case of an IGBT, the first electrode is a collector, and the second electrode is an emitter.
Further, in an embodiment of the present invention, the power electronic converter is a switched capacitor type high gain converter, a clamped capacitor type high gain converter, a voltage doubler based high gain converter, a quadratic type high gain converter, or a voltage boosting unit based high gain converter.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a topology diagram of a non-resonant soft-switching circuit based on capacitive branches according to one embodiment of the present invention;
FIG. 2 is a topology diagram of an interleaved clamped capacitive high-gain DC converter employing a non-resonant soft-switching circuit based on capacitive branches, according to one embodiment of the present invention;
FIG. 3 is a diagram illustrating the simulation result of the turn-on of the switching tube ZCS in the interleaved clamped capacitive high-gain DC converter using the non-resonant soft switching circuit based on the capacitive branch according to an embodiment of the present invention;
fig. 4 is a diagram illustrating the simulation result of turning off the diode ZCS in the interleaved clamped capacitor-type high-gain dc converter using the non-resonant soft switching circuit based on the capacitor branch according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The proposed non-resonant soft-switching circuit based on capacitive branches according to embodiments of the present invention is described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a non-resonant soft switching circuit based on a capacitive branch according to an embodiment of the present invention.
As shown in fig. 1, the non-resonant soft switching circuit 10 based on capacitive branch comprises: inductor L1Auxiliary inductor La1Switch tube S1Capacitor C1And a shunt branch.
Wherein, the inductance L1One end of (1), a switch tube S1First electrode of (1), auxiliary inductor La1One end of each of the first and second branches is connected to one end of a shunt branch, and an inductor L1Is connected with a first external circuit, a switching tube S1The second electrode of the shunt branch is connected with a second external circuit, the other end of the shunt branch is connected with a third external circuit, and an auxiliary inductor La1Another terminal of (1) and a capacitor C1Is connected to one terminal of a capacitor C1The other end of the first and second external circuits is connected with a fourth external circuit; at the inductor L1A capacitor C satisfying a first predetermined condition1Satisfies the second preset condition and the auxiliary inductor La1And when a third preset condition is met, the ZCS of the switching tube and the ZCS of the diode in the power electronic converter are controlled to be switched on. The soft switching circuit 10 of the embodiment of the invention can realize zero current switching-on of a switching tube and zero current switching-off of a diode, is beneficial to reducing device stress, reducing switching loss and realizing high frequency of a converter, and is suitable for being applied to high-efficiency power conversion occasions.
The soft switching circuit 10 of the embodiment of the present invention applies a non-resonant soft switching technique based on a capacitive branch. The first predetermined condition may be understood as the inductance L1Is large enough to be considered as a constant current source, and the second predetermined condition is understood to be a capacitance C1Is large enough to be regarded as a constant voltage source, and the third predetermined condition can be understood as the auxiliary inductor La1Is small enough not to contact the first capacitor C1Resonance occurs. Therefore, the ZCS switching-on of the switching tube and the ZCS switching-off of the diode in the converter are realized under the condition of no inductance and capacitance resonance, and the current stress and the voltage stress of the switching tube and the diode are not increased.
Further, in one embodiment of the present invention, the switching tube S1Can be N-type MOSFET or IGBT, switch tube S1When the MOSFET is an N-type MOSFET, the first electrode is a drain electrode, and the second electrode is a source electrode; switch tube S1In the case of an IGBT, the first electrode is a collector and the second electrode is an emitter.
Further, in one embodiment of the present invention, the first to fourth external circuits are power electronic converters other than the power electronic converterThe other circuit outside the resonance-free soft switching circuit based on the capacitor branch is arranged in the switching tube S1During the turn-off period, the shunt branch and the auxiliary inductor La1Sharing the current-through inductance L1Current of (I)L1。
The power electronic converter in the embodiment of the present invention operates in the PWM mode, and the soft switching circuit 10 in the embodiment of the present invention can be widely applied to the power electronic converter to realize the soft switching operation thereof. Wherein power electronic converters include, but are not limited to: (1) a switched capacitor high gain converter; (2) a clamp capacitance type high gain converter; (3) a high gain converter based on a voltage doubling unit; (4) a quadratic high gain converter; (5) high gain converters based on voltage boosting units.
The soft switching circuit 10 of the embodiment of the present invention is subjected to functional verification and circuit simulation verification in combination with a specific embodiment.
FIG. 2 is a topology diagram of an interleaved clamped capacitive high-gain DC converter to which soft-switching circuit 10 of an embodiment of the present invention is applied, according to an embodiment of the present invention, wherein the thickened portion is the proposed non-resonant soft-switching circuit based on capacitive branches; in addition, the non-thickened part is an external circuit in the embodiment of the invention, a diode D3The branch is a shunt branch in the embodiment of the invention.
In order to verify the soft switching circuit 10 according to the embodiment of the present invention, a simulation platform is set up according to the simulation parameters in table 1, and fig. 3 and 4 are simulation results. From the simulation results shown in fig. 3 and fig. 4, it can be found that the soft switching circuit 10 according to the embodiment of the present invention is applied to the interleaved parallel clamp capacitor high gain middle switch tube S1、S2All realize ZCS on and diode D1、D2、D3ZCS turn-off is achieved; and no resonance occurs in the circuit, and the current stress of the switching tube and the diode is not increased. Wherein, table 1 is a simulation parameter table.
TABLE 1
Parameter name Parameter value
Input source Vin 40V
Switching frequency fs 200kHz
Duty cycle D 0.77
Inductor L1 300μH
Inductor L2 300μH
Auxiliary inductor La1 2μH
Capacitor C1 10μF
Capacitor C2 200μF
Capacitor C3 200μF
Output load RL 160Ω
In summary, simulations built according to table 1 and fig. 2 verify that the soft switching circuit 10 according to the embodiment of the present invention can be applied to a power electronic converter, to implement soft switching of a switching tube and a diode of the converter, to further reduce switching loss, to improve switching frequency, and to improve power density of the converter. In addition, the soft switching circuit 10 of the embodiment of the invention uses the resonance-free technology, so that the voltage and current stress of the switching tube and the diode can not be increased.
According to the resonance-free soft switching circuit based on the capacitor branch circuit, the switching-on of a switching tube ZCS and the switching-off of a diode in a power electronic converter can be realized under the condition of no resonance, the switching loss can be effectively reduced, and the reverse recovery current of the diode can be inhibited; meanwhile, the voltage and current stress of a semiconductor device in the converter can not be increased, so that the device stress can be reduced, the switching loss can be reduced, the high frequency of the converter can be realized, the converter is suitable for high-efficiency power conversion occasions, and the converter can be well applied to a power electronic converter, so that the efficiency of the power electronic converter is higher, and the power density is lower.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (7)

1. A non-resonant soft switching circuit based on a capacitive branch, comprising: inductor L1Auxiliary inductor La1Switch tube S1Capacitor C1And a branch line, wherein,
the inductance L1One end of the switch tube S1The auxiliary inductor L, and a first electrode ofa1One end of each of the first and second inductors is connected to one end of the shunt branch, and the inductor L1Is connected with a first external circuit, the switching tube S1The second electrode of the shunt branch is connected with a second external circuit, the other end of the shunt branch is connected with a third external circuit, and the auxiliary inductor La1And the other end of the capacitor C1Is connected to one end of the capacitor C1The other end of the first and second external circuits is connected with a fourth external circuit;
at the inductance L1The capacitor C satisfies a first preset condition1Satisfies a second predetermined condition and the auxiliary inductor La1When a third preset condition is met, the ZCS of a switching tube and the ZCS of a diode in the power electronic converter are controlled to be turned on and turned off, wherein the first preset condition is that the inductor L is connected with the diode1Is large enough in the inductance L1When a first preset condition is met, the inductor L1Is regarded as a constant current source; the second preset condition is that the capacitor C is1Sufficiently large at said capacitance C1When a second preset condition is met, the capacitor C1As a constant voltage source; the third preset condition is that the auxiliary inductor La1Sufficiently small that the auxiliary inductance La1When a third preset condition is met, the auxiliary inductor La1And the capacitor C1No resonance occurs.
2. The soft switching circuit of claim 1, wherein the switch transistor S is arranged in the switch tube S1During the turn-off period, the shunt branch and the auxiliary inductor La1Share the flow through the inductance L1Current of (I)L1。
3. The soft-switching circuit of claim 1, wherein the first through fourth external circuits are circuits other than the soft-switching circuit in the power electronic converter.
4. The soft switching circuit of claim 1, wherein the switching tube S1Is an N-type MOSFET or IGBT.
5. The soft switching circuit of claim 4, wherein the switch tube S1And when the MOSFET is an N-type MOSFET, the first electrode is a drain electrode, and the second electrode is a source electrode.
6. The soft switching circuit of claim 4, wherein the switch tube S1In the case of an IGBT, the first electrode is a collector electrode, and the second electrode is a collector electrodeThe electrode is an emitter.
7. The soft switching circuit of any one of claims 1 to 6, wherein the power electronic converter is a switched capacitor type high gain converter, a clamped capacitor type high gain converter, a voltage doubler based high gain converter, a quadratic type high gain converter, or a voltage booster based high gain converter.
CN201910482892.6A 2019-06-04 2019-06-04 Non-resonance soft switching circuit based on capacitance branch circuit Active CN110350781B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910482892.6A CN110350781B (en) 2019-06-04 2019-06-04 Non-resonance soft switching circuit based on capacitance branch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910482892.6A CN110350781B (en) 2019-06-04 2019-06-04 Non-resonance soft switching circuit based on capacitance branch circuit

Publications (2)

Publication Number Publication Date
CN110350781A CN110350781A (en) 2019-10-18
CN110350781B true CN110350781B (en) 2020-06-26

Family

ID=68181503

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910482892.6A Active CN110350781B (en) 2019-06-04 2019-06-04 Non-resonance soft switching circuit based on capacitance branch circuit

Country Status (1)

Country Link
CN (1) CN110350781B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6483724B1 (en) * 2002-02-15 2002-11-19 Valere Power, Inc. DC/DC ZVS full bridge converter power supply method and apparatus
CN103259343B (en) * 2013-05-07 2015-09-16 南京邮电大学 Utilize the magnetic coupling resonance wireless power supply of first-harmonic energy in high frequency square wave
KR102087283B1 (en) * 2013-09-10 2020-03-11 이피션트 파워 컨버젼 코퍼레이션 High efficiency voltage mode class d topology
CN105991017A (en) * 2015-02-12 2016-10-05 广东易事特电源股份有限公司 Control method and control device for BOOST soft switch
CN107852001A (en) * 2015-05-15 2018-03-27 鲍尔拜普罗克西有限公司 Induction type power transmitter
US10170940B2 (en) * 2016-05-04 2019-01-01 Imperial Innovations Limited Wireless power transfer system
CN107395011B (en) * 2017-07-27 2019-06-18 北京交通大学 Single inductance single switch high-gain capacitor-clamped formula DC booster converter

Also Published As

Publication number Publication date
CN110350781A (en) 2019-10-18

Similar Documents

Publication Publication Date Title
US10027237B2 (en) Self-oscillating resonant power converter
US8837173B2 (en) DC to DC power converting device
WO2014155604A1 (en) Dc-dc converter
CN101018015A (en) DC-DC converter
US6906931B1 (en) Zero-voltage switching half-bridge DC-DC converter topology by utilizing the transformer leakage inductance trapped energy
JP6452226B2 (en) DC-DC converter auxiliary circuit and bidirectional buck-boost DC-DC converter using the auxiliary circuit
Moradisizkoohi et al. A quasi-resonant bi-directional buck-boost converter for Electric Vehicle applications
CN110350781B (en) Non-resonance soft switching circuit based on capacitance branch circuit
JP2008206283A (en) Snubber circuit
TWI501527B (en) High voltage ratio interleaved converter with soft-switching using single auxiliary switch
CN110311552B (en) Current linear resonance-free soft switching circuit based on diode branch
JP4806325B2 (en) DC-DC converter
JP6458235B2 (en) Switching power supply
JP4806324B2 (en) DC-DC converter
JP3124921B2 (en) DC-DC converter
US10250249B1 (en) Recuperative gate drive circuit and method
KR101704189B1 (en) Ozone Generation Power Supply
JP4806323B2 (en) DC-DC converter
CN216414182U (en) Staggered parallel control circuit, maximum power point tracking controller and photovoltaic optimizer
Mishima et al. A ZCS lossless snubber cells-applied half-bridge bidirectional DC-DC converter for automotive electric power systems
CN112803785B (en) Novel RCC circuit based on MOS device
CN112350598B (en) Resonance zero current circuit
JP2018148725A (en) DC voltage converter
TW202241032A (en) Switching regulator achieveing soft switching by double switching and control circuit thereof
Delshad et al. A new soft switching current-fed converter with high voltage gain

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
GR01 Patent grant
GR01 Patent grant