CN206850670U - A kind of high-freedom degree DC/DC converters of automatic current equalizing - Google Patents

A kind of high-freedom degree DC/DC converters of automatic current equalizing Download PDF

Info

Publication number
CN206850670U
CN206850670U CN201720628475.4U CN201720628475U CN206850670U CN 206850670 U CN206850670 U CN 206850670U CN 201720628475 U CN201720628475 U CN 201720628475U CN 206850670 U CN206850670 U CN 206850670U
Authority
CN
China
Prior art keywords
electric capacity
inductance
diode
input
power switch
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.)
Expired - Fee Related
Application number
CN201720628475.4U
Other languages
Chinese (zh)
Inventor
邾玢鑫
刘崧
黄悦华
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.)
China Three Gorges University CTGU
Original Assignee
China Three Gorges University CTGU
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 China Three Gorges University CTGU filed Critical China Three Gorges University CTGU
Priority to CN201720628475.4U priority Critical patent/CN206850670U/en
Application granted granted Critical
Publication of CN206850670U publication Critical patent/CN206850670U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

The utility model provides a kind of high-freedom degree DC/DC converters of automatic current equalizing, compared to existing converter, it inputs the number of phases and gain unit number is adjustable, and automatic current equalizing can be realized after the conversion input number of phases and gain unit number, eliminate the control strategy design of control and the complication of big quantity sensor.During applied to different occasions, can the flexible modulation input number of phases and gain unit number, several times gain can be improved by often increasing an input number of phases or a gain unit number, and the ratio of its output voltage and input voltage is m n, whereinDFor dutycycle, m, n are respectively to input the number of phases and gain unit number.Large-scale high-power high-gain occasion can be met.Compared with existing high-gain technology, the utility model is not present coupling inductance, also reduced in the absence of isolating transformer, the current stress and voltage stress of switch and diode, improves the whole work efficiency of converter.

Description

A kind of high-freedom degree DC/DC converters of automatic current equalizing
Technical field
A kind of DC-DC converter is the utility model is related to, the high-freedom degree DC/DC of specifically a kind of automatic current equalizing becomes Parallel operation.
Background technology
In the prior art, the research on the DC/DC converters applied to large-capacity high-power transmission system application scenario It is less, and be mostly isolated converter, the quasi-converter is real typically by the way of intermediate isolating transformer turn ratio is changed The shortcomings of now high-gain, the control strategy that thus can be brought is complicated, and energy transmission efficiency is not high makes it in offshore wind farm etc. It is restricted in application scenario, and high frequency transformer also takes up an area the shortcomings of volume is big, cost of investment is high in the presence of heavy, because This can realize the Large Copacity DC/DC converters of high-gain there is an urgent need to a kind of light simple.At present, ground for this problem The converter studied carefully mainly has three kinds：The first, is to realize high-gain by resonance using switched resonance electric capacity, while reduce power The voltage stress of device, but this method is complicated, and required device is more.Second, be that high increasing is realized using coupling inductance Benefit, but to not only result in switching device voltage stress too high for the use of coupling inductance, and magnetic disturbance can be caused, add conversion The working loss of device.Meanwhile such scheme also has the problem of input number of phases extension difficulty is big when realizing high-gain, particularly It is big that difficulty is flowed between each phase input current.The third, is modular multilevel technology, real by the connection in series-parallel between submodule Existing high-gain, its high modularization structure can realize Redundant Control, and strengthening system reliability is high, but the quasi-converter usually requires Add complicated control strategy.
The content of the invention
For deficiencies of the prior art, the utility model solves existing converter and control strategy complicated difficult be present Flow, the input number of phases is non-adjustable, and device is excessive, power switch and diode voltage stress are excessive, energy conversion efficiency reduces etc. A kind of problem, there is provided the high-freedom degree DC/DC converters of automatic current equalizing.Its high-freedom degree show the converter can according to without Application scenario, adjust the different input numbers of phases and gain unit number, the feature of its automatic current equalizing saves large amount of complex control The design of strategy.
The technical scheme that the utility model is taken is：
A kind of high-freedom degree DC/DC converters of automatic current equalizing, the converter include the m input number of phases, n gain list Member, m power switch S1、S2...Sm, m inductance L1、L2...Lm, mn electric capacity Co、C11、C21、C31...Cmn, mn two Pole pipe Do、D11、D21、D31...Dmn；
In the m input numbers of phases,
First inductance L in first phase1Input termination power positive pole, output termination capacitor C1(n-1)One end, first Inductance L1With electric capacity C1(n-1)Node and input power negative pole indirect first power switch S1, the first power switch S1Source electrode Meet the negative pole of input power, the first power switch S1Drain electrode and the first inductance L1With electric capacity C1(n-1)Node be connected；
Second inductance L in second phase2Input termination power positive pole, output termination capacitor C2nOne end, second electricity Feel L2With electric capacity C2nNode and input power negative pole indirect second power switch S2, the second power switch S2Source electrode connects defeated Enter the negative pole of power supply, the second power switch S2Drain electrode and the second inductance L2With electric capacity C2nNode be connected；
By that analogy to m phases:
M inductance L in m phasesmInput termination power positive pole, output termination capacitor CmnOne end, in m inductance Lm With electric capacity CmnNode and input power negative pole indirect m power switch Sm, m power switch SmSource electrode connects input power Negative pole, m power switch SmDrain electrode and m inductance LmWith electric capacity CmnNode be connected；
In n gain units,
In gain unit n, the first inductance L1Export termination capacitor C1(n-1)One end, the second inductance L2Export termination capacitor C2nOne end, by that analogy to m inductance LmExport termination capacitor CmnOne end.Diode D2nNegative electrode connect electric capacity C2nIt is another One end, anode connect electric capacity C1(n-1)One end；Diode D3nNegative electrode connect electric capacity C3nThe other end, anode connects electric capacity C2nIt is another End, by that analogy to diode DmnNegative electrode connect electric capacity CmnThe other end, anode connects electric capacity C(m-1)nThe other end；
In gain unit n-1, the first inductance L1Export termination capacitor C1(n-1)One end, electric capacity C2nAnother termination capacitor C2(n-1)One end, the C arrived by that analogymnAnother termination capacitor Cm(n-1)One end.Diode D1(n-1)Negative electrode connect electric capacity C1(n-1)The other end, anode connects electric capacity CmnThe other end；Diode D2(n-1)Negative electrode connect electric capacity C2(n-1)The other end, anode Even electric capacity C1(n-1)The other end, by that analogy to diode Dm(n-1)Negative electrode connect electric capacity Cm(n-1)The other end, anode connects electric capacity C(m-1)(n-1)The other end.
Gain unit 1 is arrived by that analogy：
In gain unit 1, electric capacity C12Another termination capacitor C11One end, electric capacity C22Another termination capacitor C21One End, by that analogy to Cm2Another termination capacitor Cm1One end.Diode D11Negative electrode connect electric capacity C11The other end, anode connect Electric capacity Cm2The other end；Diode D12Negative electrode connect electric capacity C12The other end, anode connects electric capacity C11The other end, by that analogy To diode Dm1Negative electrode connect electric capacity Cm1The other end, anode connects electric capacity C(m-1)1The other end.
Finally in electric capacity Cm1The other end draw diode D0Anode, diode D0Negative electrode and electric capacity C0With load RL One end be connected, electric capacity C0With load RLThe other end be connected with the negative pole of input power.
One kind input adjustable high-gain DC/DC inverter control methods of the number of phases, adjacent power use staggeredly between switching Control strategy；Switch drive phase differs 180 ° between i.e. per adjacent two-phase.
A kind of automatic current equalizing high-freedom degree DC/DC converters of the utility model, technique effect are as follows：
1st, the utility model realizes that high-gain exports using the adjustable high-freedom degree DC/DC converters of the number of phases are inputted, and often increases The one input number of phases or a gain unit number, can improve more than several times basic gain, output voltage and input voltages in original basis Ratio be：
Wherein D is dutycycle, and m, n are respectively to input the number of phases and gain unit number.The converter compared with prior art, no Coupling inductance be present, in the absence of transformer, switch and diode voltage stress are greatly reduced, the converter input number of phases and increasing Beneficial unit is adjustable, has wide range of applications, and is more suitable for large-scale high-gain occasion.
2nd, the converter can realize automatic current equalizing, big per phase current compared to uneven stream existing for such other converter It is small uncontrollable, it is necessary to which that the problems such as increasing multiple sensors and control strategy, the converter is when duty cycle of switching is identical, per mutually electricity Stream is all equal.
3rd, on the one hand the high-freedom degree of the converter shows the regulation to the converter current stress, and it can be according to not Application scenario, the different input numbers of phases is adjusted, share high input current by increasing the input number of phases so as to effectively reduce The current stress of component；On the other hand the regulation to the converter voltage stress is shown, by changing gain unit number energy The voltage stress of each component is effectively reduced while high boost is realized.
Brief description of the drawings
Fig. 1 is the utility model circuit theory total figure.
Fig. 2 is circuit topology figure when the utility model circuit contains 4 phases input 2 gain units of the number of phases.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 2 a kind of gain unit DC/DC converters of 4 phase of automatic current equalizing 2, it includes 3 input phases, 3 gains Unit, 3 power switch S1、S2、S3、S4, 4 inductance L1、L2、L3、L4, 8 electric capacity C0、C11、C21、C31、C41、C22、C32、C42 Wherein, 12 diode D0、D11、D21、D31、D41、D22、D23、D24；Wherein：In 4 input numbers of phases,
First inductance L in first phase1Input termination power positive pole, output termination capacitor C11One end, first electricity Feel L1With electric capacity C11Node and input power negative pole indirect first power switch S1, the first power switch S1Source electrode connects defeated Enter the negative pole of power supply, the first power switch S1Drain electrode and the first inductance L1With electric capacity C11Node be connected.
Second inductance L in second phase2Input termination power positive pole, output termination capacitor C22One end, second electricity Feel L2With electric capacity C22Node and input power negative pole indirect second power switch S2, the second power switch S2Source electrode connects defeated Enter the negative pole of power supply, the second power switch S2Drain electrode and the second inductance L2With electric capacity C22Node be connected.
3rd inductance L in third phase3Input termination power positive pole, output termination capacitor C23One end, the 3rd electricity Feel L3With electric capacity C23Node and input power negative pole indirect 3rd power switch S3, the 3rd power switch S3Source electrode connects defeated Enter the negative pole of power supply, the 3rd power switch S3Drain electrode and the 3rd inductance L3With electric capacity C23Node be connected.
4th inductance L in 4th phase4Input termination power positive pole, output termination capacitor C24One end, the 4th electricity Feel L4With electric capacity C24Node and input power negative pole indirect 4th power switch S4, the 4th power switch S4Source electrode connects defeated Enter the negative pole of power supply, the 4th power switch S4Drain electrode and the 4th inductance L4With electric capacity C24Node be connected.
In n gain units,
In gain unit 2, the first inductance L1Export termination capacitor C11One end, the second inductance L2Export termination capacitor C22's One end, the 3rd inductance L3Export termination capacitor C32One end, the 4th inductance L4Export termination capacitor C42One end.Diode D22's Negative electrode connects electric capacity C22The other end, anode connects electric capacity C11One end；Diode D32Negative electrode connect electric capacity C32The other end, anode Even electric capacity C22The other end, diode D42Negative electrode connect electric capacity C42The other end, anode connects electric capacity C32The other end.
In gain unit 1, the first inductance L1Export termination capacitor C11One end, electric capacity C22Another termination capacitor C21's One end, electric capacity C32Another termination capacitor C31One end, electric capacity C42Another termination capacitor C41One end.Diode D11The moon Pole connects electric capacity C11The other end, anode connects electric capacity C42The other end；Diode D21Negative electrode connect electric capacity C21The other end, anode Even electric capacity C11The other end, diode D31Negative electrode connect electric capacity C31The other end, anode connects electric capacity C21The other end, diode D24Negative electrode connect electric capacity C24The other end, anode connects electric capacity C13The other end.
Finally in electric capacity C41The other end draw diode D0Anode, diode D0Negative electrode and electric capacity C0With load RL One end be connected, electric capacity C0With load RLThe other end be connected with the negative pole of input power.
According to the difference of power switch state, circuit can be divided into three kinds of working conditions：
(1), power switch is both turned on, and now input power passes through power switch S1、S2、S3、S4Respectively to inductance L1、L2、 L3、L4Charging；All diodes are turned off.
(2), controller control power switch S1、S3Shut-off, power switch S2、S4Conducting, now low-tension supply passes through inductance L1, diode D22, switch S2To electric capacity C22Charging, passes through electric capacity C11With diode D21To electric capacity C21Charging, to C11Electric discharge；Together When low-tension supply pass through inductance L3, electric capacity C32, diode D42, switch S4To electric capacity C42Charging, to C32Electric discharge, passes through electric capacity C31 With diode D41To electric capacity C41Charging, to C31Electric discharge；Now the second power switch S2With the 4th power switch S4It is both turned on, low pressure Power supply passes through power switch S2、S4To inductance L2、L4Charging；Diode Do、D11、D31、D32It is turned off.
(3), controller control power switch S2、S4Shut-off, power switch S1、S3Conducting, now low-tension supply passes through inductance L2, electric capacity C22, diode D32, switch S3To electric capacity C32Charging, gives electric capacity C22Electric discharge, passes through electric capacity C21With diode D31To electricity Hold C31Charging, to C21Electric discharge；Low-tension supply passes through inductance L simultaneously4, electric capacity C42, diode D11, switch S1To electric capacity C11Charging, To C42Electric discharge, passes through electric capacity C41With diode Do, to C41Electric discharge, to electric capacity CoCharging is simultaneously to load RLPower supply；Now first Power switch S1With the 3rd power switch S3It is both turned on, low-tension supply passes through power switch S1、S3To inductance L1、L3Charging；Two poles Pipe D21、D41、D22、D42It is turned off.
By above-mentioned working condition, by electric capacity C42、C32、C22Ampere-second balance be easy to get：
As available from the above equation：
IL1=IL2=IL3=IL4
Pass through above-mentioned analysis, it can be seen that the converter realizes automatic current equalizing, and the paralleling and interleaving control of 180 ° of phase shifts Mode shares input current by four input inductance, and the electric current that can effectively reduce component while high-gain is realized should Power.
It is to illustrate the utility model example that above-mentioned embodiment of the present utility model, which is only, and is not to this The restriction of the embodiment of utility model.For those of ordinary skill in the field, on the basis of the above description also Other various forms of changes and variation can be made.Here all embodiments can not be exhaustive.It is every to belong to this The technical scheme of utility model, the obvious changes or variations amplified out still in the scope of protection of the utility model it Row.

Claims (1)

  1. A kind of 1. high-freedom degree DC/DC converters of automatic current equalizing, it is characterised in that：The converter includes the m input number of phases, n Individual gain unit, m power switch S1、S2...Sm, m inductanceL 1、L 2...L m, m n electric capacityC o、C 11、C 21、C 31...C mn, M n diodesD o、D 11、D 21、D 31...D mn；
    In the m input numbers of phases,
    First inductance in first phaseL 1Input termination power positive pole, export termination capacitorC 1(n-1)One end, in the first inductanceL 1And electric capacityC 1(n-1)Node and input power negative pole indirect first power switch S1, the first power switch S1Source electrode connects defeated Enter the negative pole of power supply, the first power switch S1Drain electrode and the first inductanceL 1And electric capacityC 1(n-1)Node be connected；
    Second inductance in second phaseL 2Input termination power positive pole, export termination capacitorC 2nOne end, in the second inductanceL 2With Electric capacityC 2nNode and input power negative pole indirect second power switch S2, the second power switch S2Source electrode connects input power Negative pole, the second power switch S2Drain electrode and the second inductanceL 2And electric capacityC 2nNode be connected；
    By that analogy to m phases:
    M inductance in m phasesL mInput termination power positive pole, export termination capacitorC mnOne end, in m inductanceL mAnd electricity HoldC mnNode and input power negative pole indirect m power switch Sm, m power switch SmSource electrode connects the negative of input power Pole, m power switch SmDrain electrode and m inductanceL mAnd electric capacityC mnNode be connected;
    In n gain units,
    In gain unit n, the first inductanceL 1Export termination capacitorC 1(n-1)One end, the second inductanceL 2Export termination capacitorC 2nOne End, by that analogy to m inductanceL mExport termination capacitorC mnOne end；
    DiodeD 2nNegative electrode connect electric capacityC 2nThe other end, anode connects electric capacityC 1(n-1)One end；DiodeD 3nNegative electrode even electricity HoldC 3nThe other end, anode connects electric capacityC 2nThe other end, by that analogy to diodeD mnNegative electrode connect electric capacityC mnThe other end, Anode connects electric capacityC (m-1)nThe other end；
    In gain unit n-1, the first inductanceL 1Export termination capacitorC 1(n-1)One end, electric capacityC 2nAnother termination capacitorC 2(n-1) One end, arrive by that analogyC mnAnother termination capacitorC m(n-1)One end；
    DiodeD 1(n-1)Negative electrode connect electric capacityC 1(n-1)The other end, anode connects electric capacityC mnThe other end；DiodeD 2(n-1)The moon Pole connects electric capacityC 2(n-1)The other end, anode connects electric capacityC 1(n-1)The other end, by that analogy to diodeD m(n-1)Negative electrode even electricity HoldC m(n-1)The other end, anode connects electric capacityC (m-1)(n-1)The other end；
    Gain unit 1 is arrived by that analogy：
    In gain unit 1, electric capacityC 12Another termination capacitorC 11One end, electric capacityC 22Another termination capacitorC 21One end, with This is extrapolated toC m2Another termination capacitorC m1One end；
    DiodeD 11Negative electrode connect electric capacityC 11The other end, anode connects electric capacityC m2The other end；DiodeD 12Negative electrode connect electric capacityC 12The other end, anode connects electric capacityC 11The other end, by that analogy to diodeD m1Negative electrode connect electric capacityC m1The other end, sun Pole connects electric capacityC (m-1)1The other end；
    Finally in electric capacityC m1The other end draw diodeD 0Anode, diodeD 0Negative electrode and electric capacityC 0With load RLOne End is connected, electric capacityC 0With load RLThe other end be connected with the negative pole of input power.
CN201720628475.4U 2017-05-27 2017-05-27 A kind of high-freedom degree DC/DC converters of automatic current equalizing Expired - Fee Related CN206850670U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720628475.4U CN206850670U (en) 2017-05-27 2017-05-27 A kind of high-freedom degree DC/DC converters of automatic current equalizing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720628475.4U CN206850670U (en) 2017-05-27 2017-05-27 A kind of high-freedom degree DC/DC converters of automatic current equalizing

Publications (1)

Publication Number Publication Date
CN206850670U true CN206850670U (en) 2018-01-05

Family

ID=60798555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720628475.4U Expired - Fee Related CN206850670U (en) 2017-05-27 2017-05-27 A kind of high-freedom degree DC/DC converters of automatic current equalizing

Country Status (1)

Country Link
CN (1) CN206850670U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106992676A (en) * 2017-05-27 2017-07-28 三峡大学 A kind of high-freedom degree DC/DC converters of automatic current equalizing
CN108599581A (en) * 2018-06-06 2018-09-28 三峡大学 A kind of large capacity isolated form DC/DC converters based on multiphase three-level inverter
CN108599577A (en) * 2018-06-06 2018-09-28 三峡大学 A kind of adjustable large capacity height boosting isolation type DC-DC converter of bridge arm number
CN108880261A (en) * 2018-06-06 2018-11-23 三峡大学 A kind of modularization soft-switching and high-gain DC/DC converter
CN109274267A (en) * 2018-11-21 2019-01-25 三峡大学 A kind of novel expansible Zeta DC-DC converter
CN111884508A (en) * 2020-07-15 2020-11-03 山东大学 Low-voltage ripple multiphase high-gain bidirectional DC-DC converter and control method thereof
CN113691127A (en) * 2021-08-29 2021-11-23 三峡大学 Single-input high-reliability capacitor current consistent type Boost DC-DC converter

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106992676B (en) * 2017-05-27 2020-06-09 三峡大学 Automatic high-freedom DC/DC converter of flow equalizing
CN106992676A (en) * 2017-05-27 2017-07-28 三峡大学 A kind of high-freedom degree DC/DC converters of automatic current equalizing
CN108599581B (en) * 2018-06-06 2023-10-27 三峡大学 High-capacity isolated DC/DC converter based on multiphase three-level inverter
CN108880261A (en) * 2018-06-06 2018-11-23 三峡大学 A kind of modularization soft-switching and high-gain DC/DC converter
CN108599577A (en) * 2018-06-06 2018-09-28 三峡大学 A kind of adjustable large capacity height boosting isolation type DC-DC converter of bridge arm number
CN108599581A (en) * 2018-06-06 2018-09-28 三峡大学 A kind of large capacity isolated form DC/DC converters based on multiphase three-level inverter
CN108599577B (en) * 2018-06-06 2023-10-27 三峡大学 Bridge arm number adjustable high-capacity high-boost isolation type DC-DC converter
CN108880261B (en) * 2018-06-06 2023-10-27 三峡大学 Modularized soft switch high-gain DC/DC converter
CN109274267A (en) * 2018-11-21 2019-01-25 三峡大学 A kind of novel expansible Zeta DC-DC converter
CN109274267B (en) * 2018-11-21 2024-03-12 三峡大学 Novel extensible Zeta DC-DC converter
CN111884508A (en) * 2020-07-15 2020-11-03 山东大学 Low-voltage ripple multiphase high-gain bidirectional DC-DC converter and control method thereof
CN111884508B (en) * 2020-07-15 2021-09-14 山东大学 Low-voltage ripple multiphase high-gain bidirectional DC-DC converter and control method thereof
CN113691127A (en) * 2021-08-29 2021-11-23 三峡大学 Single-input high-reliability capacitor current consistent type Boost DC-DC converter

Similar Documents

Publication Publication Date Title
CN206850670U (en) A kind of high-freedom degree DC/DC converters of automatic current equalizing
CN106992676A (en) A kind of high-freedom degree DC/DC converters of automatic current equalizing
CN102946194B (en) A kind of high-gain alternation and parallel connection boosting converter
CN102969893B (en) A kind of high gain boost type DC converter
CN106787723A (en) A kind of multi input boosting DC/DC converters high
CN105048490B (en) The photovoltaic micro-inverter and its numerical control device of low current stress
CN103986330B (en) A kind of resonance step-up DC/DC conversion device and its control method suitable for high-power occasion
CN106655775B (en) Two-port input ZVT high-gain Boost converter with soft switch
CN106936319A (en) A kind of two-way DC DC converters in the port of isolated form three
CN107086782A (en) A kind of adjustable high boosting DC/DC converters of number of phases based on voltage doubling unit
CN106533173A (en) High-gain DC/DC converter with adjustable input phase number
CN107070223A (en) A kind of two-way DC/DC converters of the high-power high step-up ratio of non-isolation type and control method
CN206962701U (en) A kind of adjustable high boosting DC/DC converters of number of phases based on voltage doubling unit
CN103066834A (en) Staggered parallel high-gain boost type direct current (DC) converter
CN106505869A (en) A kind of grid-connected combined type resonant full bridge changer of new forms of energy direct current and control method
CN106712523A (en) Boost three-level full-bridge inverter and control method thereof
CN115051572B (en) IIOS converter with series resonance type LC power self-balancing unit and method
CN202145618U (en) Bidirectional DC/DC converter
CN206402104U (en) One kind input adjustable high-gain DC/DC converters of the number of phases
CN206878702U (en) A kind of high boosting DC/DC converters based on voltage doubling unit
CN206294078U (en) A kind of multi input boosting DC/DC converters high
CN106712504B (en) Non-isolated high-gain DC/DC converter with soft switch
CN106655774A (en) Multi-input high-gain DC/DC converter
CN108306507B (en) There are three the intermediate capacitance formula Boost DC converters and method of input source for tool
CN204794700U (en) Boost circuit system and on -vehicle solar airconditioning

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180105

Termination date: 20210527

CF01 Termination of patent right due to non-payment of annual fee