CN106026657A - Non-isolated high-gain DC-DC boost converter - Google Patents
Non-isolated high-gain DC-DC boost converter Download PDFInfo
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- CN106026657A CN106026657A CN201610537360.4A CN201610537360A CN106026657A CN 106026657 A CN106026657 A CN 106026657A CN 201610537360 A CN201610537360 A CN 201610537360A CN 106026657 A CN106026657 A CN 106026657A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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
- H02M3/155—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 using semiconductor devices only
- H02M3/156—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 using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—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 using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—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 using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention belongs to the technical field of electric power and electronics, and in particularly relates to a non-isolated high-gain DC-DC boost converter. A topological unit of the converter comprises an active network, a voltage doubler rectification network, a voltage stabilizing capacitor. The active network is formed by the mutually parallel connection of two modules formed by serial connection of full control switch tubes and inductors. In the voltage doubler rectification network, two diodes are connected in series and in such a manner as a capacitor is arranged between the two diodes to form a three-terminal network. And the positive pole of the voltage stabilizing capacitor is connected with the negative poles of the diodes in the three-terminal network. The negative pole of the voltage stabilizing capacitor is connected to the negative pole of inputted voltage from the active network. The non-isolated high gain DC-DC boost converter provided in the invention can be used in a photovoltaic power generation system so as to make the voltage gain of the DC boost circuit high. With a simple control strategy and small size, small voltage stress of switch tubes in the boost topology and small current attraction can be achieved.
Description
Technical field
The invention belongs to electric and electronic technical field, particularly relate to non-isolated high-gain DC-DC boost converter.
Background technology
After burning with it along with fossil energy day by day exhausted to the pollution problem of environment etc. increasingly by international community concern it
After.Find the energy novel, renewable, free of contamination and become the major issue that pendulum is extremely urgent in face of the mankind.Photovoltaic electric energy is because of it
The advantages such as inexhaustible, cleanliness without any pollution, become people's emphasis problem to future source of energy demand behaviors, potentiality
Huge.
The DC voltage directly exported due to photovoltaic panel in photovoltaic generating system is relatively low, generally 33-43V, and for AC220V
Civil power, even with full-bridge grid-connected inverter, its direct current inlet highway voltage the most also wants 380V, how to realize high-gain
DC-DC boosting is to realize one of problem in urgent need to solve in grid-connected photovoltaic system.
Isolation type DC-DC converter improves voltage by the turn ratio increasing topological structure medium/high frequency transformer.But too high circle
Number ratio can affect the linearity of changer, and the leakage inductance of changer is also to be badly in need of problem to be considered, in system bulk and conversion simultaneously
There is also many deficiencies compared to non-isolation type DC-DC converter in efficiency, therefore non-isolation type changer is only and studies at present
Emphasis.
Although Boost is when dutycycle is close to 1, its voltage gain in theory can be with approach infinity, but along with switch
The shortening of turn-off time: its inductive current ripple, power device peak point current and output current ripple all will become larger；It has
The voltage stress of source switch pipe and passive switch pipe is equal to output voltage, and excessive voltage stress can be greatly increased the power of changer
Loss reduces the efficiency of transmission of changer.So basic Boost is in actual applications in order to ensure certain conversion efficiency,
It is typically only applicable to the occasion that voltage gain is not more than 6.
In order to improve voltage gain and changer energy transmission efficiency, it has been proposed that a lot of non-isolation type high-gain DC-DC boostings
Changer.Some documents, by the way of insertion switch inductance in Boost circuit, give this topology under ideal conditions
Steady-state analysis, has simple control strategy, but the voltage stress of this converter topology breaker in middle pipe is the highest, and its voltage
Gain is the most relatively low.Some document uses the mode of Boost circuit many level output to realize voltage high-gain, but height to be realized
The premise of gain is to increase the level number of output, i.e. electric capacity quantity also this considerably increases topological structure along with increase
Complexity.Part document uses the mode of two Boost circuit cascade to realize voltage high-gain, but its front and back stages Boost
It is poor to there is control beat in circuit, and the voltage stress of following stage Boost circuit breaker in middle pipe is equal to output voltage.Other documents
By the way of insertion switch electric capacity in Boost circuit, it is achieved voltage high-gain, but along with the lifting of step-up ratio, in circuit
Diode, electric capacity quantity will roll up, and its inductive current stress is the biggest.
Summary of the invention
For above-mentioned technical problem, it is an object of the invention to provide a kind of control strategy non-isolated height simple, small volume and increase
Benefit DC-DC boost converter.
Concrete technical scheme is:
Non-isolated high-gain DC-DC boost converter, this converter topology unit includes: active electric network, voltage multiplying rectifier network,
Electric capacity of voltage regulation；
Described active electric network, uses the module of two full control switching tubes and inductance series connection parallel with one another to form；
Described voltage multiplying rectifier network, uses two Diode series, accesses electric capacity one end and form three-terminal network between two diodes；
In described electric capacity of voltage regulation, its positive pole and voltage multiplying rectifier three-terminal network, diode cathode is connected, its negative pole and active electric network defeated
Enter voltage negative pole to connect.
Concrete: the upper end of switching tube S2 is connected with the upper end of inductance L2, directly connects the positive pole of direct-current input power supplying；Inductance L1
Upper end is connected with switching tube S2 lower end；Switching tube S1 upper end is connected with inductance L2 lower end；The lower end of inductance L1 and switching tube S1
Lower end be connected, be directly accessed the negative pole of direct-current input power supplying；The positive pole of diode D1 is connected with the lower end of inductance L2, negative pole
It is connected with positive pole, the positive pole of diode D2 of electric capacity C1 respectively；The negative pole of electric capacity C1 is connected with the lower end of switching tube S2, just
Pole is connected with the positive pole of diode D2；The positive pole of electric capacity of voltage regulation C2 is connected with the negative pole of diode D2, negative pole and input direct-current
The negative pole of power supply is connected；Load Rd and electric capacity of voltage regulation C2 is in parallel.
Described non-isolated high-gain DC-DC boost converter, three corresponding operation modes are respectively as follows:
First operation mode: switching tube S1, switching tube S2 and diode D2 conducting, diode D1 ends；
Second operation mode: switching tube S1, switching tube S2 and diode D2 cut-off, diode D1 turns on；
3rd operation mode: switching tube S1, switching tube S2, diode D1, diode D2 are turned off.
This new converter, it is characterised in that include topology unit as claimed in claim 1, wherein:
Switching tube S2 and switching tube S1 uses same PWM wave control signal, carries out Synchronization Control.
First operation mode: now direct current power source voltage is carried on inductance L1 and inductance L2 the most respectively, gives inductance L1 respectively
Charge with inductance L2, inductance L1 and the voltage U at inductance L2 two ends this momentL1、UL2It is equal to supply voltage, inductance L1, electricity
The electric current I of sense L2L1、IL2The most linear growth；Supply voltage U simultaneouslyDCWith electric capacity C1 both end voltage UC1Series connection is to voltage stabilizing
Electric capacity C2 and load Rd powers.
Second operation mode: now inductance L1, the induction electromotive force U at inductance L2 two endsL1、UL2, additional power source voltage UDC
It is serially connected and charges to electric capacity C1；Load Rd is individually powered by electric capacity of voltage regulation C2.
3rd operation mode: the now electric current I of inductance L1, inductance L2L1、IL2It is discontinuously zero.In whole topological structure, by surely
Voltage capacitance C2 powers to load Rd.
The non-isolated high-gain DC-DC boost converter that the present invention provides, topological structure is by an additional multiplication of voltage of active electric network
Rectification circuit combined deformation designs.This invention has a characteristic that, under conditions of same duty cycle, changer has 2
The voltage gain of times traditional B oost topological structure；The half that voltage stress is output voltage of two active switch pipes in changer,
It is the half of active switch tube voltage stress in traditional B oost circuit；In changer two inductive currents the most equal and without any
Sharing control, and its two active switch pipe employing Synchronization Control, control strategy is simple.Industrial applicability have practical well
It is worth.
The non-isolated high-gain DC-DC boost converter that the present invention provides, in photovoltaic generating system so that DC boosting electricity
The voltage gain on road is high, and control strategy is simple, and device volume is less, and Boost topology breaker in middle tube voltage stress, electric current gravitation are relatively
Little.
Accompanying drawing explanation
In order to more clearly illustrate operation principle and the mode of operation of this non-isolated high-gain DC-DC boost converter, existing each to it
The conducting of individual switching tube, cut-off combination, to the various voltage and current signals of main components in its topology, in its topological structure
Equivalent topologies structure under various operation modes does accompanying drawing introduction:
Fig. 1 is the topology diagram of the present invention.
Fig. 2 is electric current, the waveshape signal figure of voltage of loading flow through on electronic devices and components in embodiment.
Fig. 3 is embodiment equivalent circuit diagram when working at the first mode of operation.
Fig. 4 is embodiment equivalent circuit diagram when working at the second mode of operation.
Fig. 5 is embodiment equivalent circuit diagram when being operated under the 3rd operation mode.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the present invention, below in conjunction with in the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, all should belong to the scope of protection of the invention.
Embodiment one
Such as Fig. 1, it illustrates the connected mode of this non-isolated high-gain DC-DC boost converter topological structure.Wherein switching tube
The upper end of S2 is connected with the upper end of inductance L2, directly connects the positive pole of direct-current input power supplying；Under inductance L1 upper end and switching tube S2
End is connected；Switching tube S1 upper end is connected with inductance L2 lower end；The lower end of inductance L1 is connected with the lower end of switching tube S1, directly
Access the negative pole of direct-current input power supplying；The positive pole of diode D1 is connected with the lower end of inductance L2, the positive pole of negative pole and electric capacity C1,
The positive pole of diode D2 is connected；The negative pole of electric capacity C1 is connected with the lower end of switching tube S2, positive pole and the positive pole of diode D2
It is connected；The positive pole of electric capacity of voltage regulation C2 is connected with the negative pole of diode D2, and negative pole is connected with the negative pole of input DC power；Load
Rd and electric capacity of voltage regulation C2 is in parallel.Wherein switching tube S2 and switching tube S1 uses same PWM ripple as control signal, i.e. opens
Close pipe S2 and switching tube S1 and carry out Synchronization Control.
Such as table 1, its operation mode sequence number 1,2 shows that this non-isolated high-gain DC-DC boost converter is at continuous current mode
(CCM) conducting of the switching tube under pattern, cut-off state table figure.
Switching tube conducting when table 1 is under three kinds of operation modes, cut-off state table figure
Two kinds of switching tube operation modes that this new converter is corresponding in ccm mode are:
Operation mode sequence number 1: switching tube S1, switching tube S2 and diode D2 conducting, diode D1 ends；
Operation mode sequence number 2: switching tube S1, switching tube S2 and diode D2 cut-off, diode D1 turns on；
Such as Fig. 2 a, it illustrates this non-isolated high-gain DC-DC boost converter when working in ccm mode, in circuit one
The a little voltage of primary electron components and parts, current signal waveform.Wherein Ugs is switching tube S2 and the control signal of switching tube S1,
IL1 and IL2 respectively flows through inductance L1 and the electric current of inductance L2, UL1 and UL2 is respectively inductance L1 and inductance L2 two ends
Voltage, UC1 and UD1 is respectively carried in electric capacity C1 and the voltage at diode D2 two ends, and ID1 is to flow through diode D1
Electric current.
Such as Fig. 3, now direct current power source voltage is carried on inductance L1 and inductance L2 the most respectively, gives inductance L1 and inductance respectively
L2 charges, inductance L1 and the voltage U at inductance L2 two ends this momentL1、UL2It is equal to supply voltage, inductance L1, inductance L2
Electric current IL1、IL2The most linear growth；Supply voltage U simultaneouslyDCWith electric capacity C1 both end voltage UC1Series connection is to electric capacity of voltage regulation C2
Power with load Rd.
Such as Fig. 4, now inductance L1, the induction electromotive force U at inductance L2 two endsL1、UL2, additional power source voltage UDCMutually string
Join and charge to electric capacity C1；Load Rd is individually powered by electric capacity of voltage regulation C2.
Embodiment two
Such as Fig. 1, it illustrates the connected mode of this non-isolated high-gain DC-DC boost converter topological structure.Wherein switching tube
The upper end of S2 is connected with the upper end of inductance L2, directly connects the positive pole of direct-current input power supplying；Under inductance L1 upper end and switching tube S2
End is connected；Switching tube S1 upper end is connected with inductance L2 lower end；The lower end of inductance L1 is connected with the lower end of switching tube S1, directly
Access the negative pole of direct-current input power supplying；The positive pole of diode D1 is connected with the lower end of inductance L2, the positive pole of negative pole and electric capacity C1,
The positive pole of diode D2 is connected；The negative pole of electric capacity C1 is connected with the lower end of switching tube S2, positive pole and the positive pole of diode D2
It is connected；The positive pole of electric capacity of voltage regulation C2 is connected with the negative pole of diode D2, and negative pole is connected with the negative pole of input DC power；Load
Rd and electric capacity of voltage regulation C2 is in parallel.Wherein the same PWM ripple of switching tube S2 and switching tube S1 employing is as control signal, i.e. S2
Synchronization Control is carried out with S1.
Such as table 1, its operation mode sequence number 1,2,3 shows that this non-isolated high-gain DC-DC boost converter is at inductive current
The discontinuously conducting of the switching tube under (DCM) pattern, cut-off state table figure.Corresponding three kinds of this new converter in dcm mode
Switching tube operation mode is:
Operation mode sequence number 1: switching tube S1, switching tube S2 and diode D2 conducting, diode D1 ends；
Operation mode sequence number 2: switching tube S1, switching tube S2 and diode D2 cut-off, diode D1 turns on；
Operation mode sequence number 3: switching tube S1, switching tube S2, diode D1, diode D2 are turned off.
Such as Fig. 2 b, it illustrates this non-isolated high-gain DC-DC boost converter and work in dcm mode that some are main in circuit
Want the voltage of components and parts, current signal waveform.Wherein Ugs is the PWM wave control signal of switching tube S2 and switching tube S1,
IL1 and IL2 respectively flows through inducer L1 and the electric current of inductance L2, UL1 and UL2 is respectively carried in inductance L1 and electricity
The voltage at sense L2 two ends, UC1 and UD1 is respectively carried in capacitor C1 and the voltage at diode D2 two ends, and ID1 is stream
Cross the electric current of diode D1.
Such as Fig. 3, now direct current power source voltage is carried on inductance L1 and inductance L2 the most respectively, gives inductance L1 and inductance respectively
L2 charges, inductance L1 and the voltage U at inductance L2 two ends this momentL1、UL2It is equal to supply voltage, inductance L1, inductance L2
Electric current IL1、IL2The most linear growth；Supply voltage U simultaneouslyDCWith electric capacity C1 both end voltage UC1Series connection is to electric capacity of voltage regulation C2
Power with load Rd.
Such as Fig. 4, now inductance L1, the induction electromotive force U at inductance L2 two endsL1、UL2, additional power source voltage UDCMutually string
Join and charge to electric capacity C1；Load Rd is individually powered by electric capacity of voltage regulation C2.
Such as Fig. 5, now the electric current I of inductance L1, inductance L2L1、IL2It is discontinuously zero.In whole topological structure, by electric capacity of voltage regulation
C2 powers to load Rd.
It should be noted that each case study on implementation is all to use the mode gone forward one by one to be described in this specification, it is above this
Bright proposed a kind of non-isolated high-gain DC-DC boost converter is described in detail, and application specific case is to this herein
Bright principle and embodiment thereof are set forth, the explanation of above case study on implementation be only intended to help to understand the method for the present invention and
Its core concept.
Claims (7)
1. non-isolated high-gain DC-DC boost converter, it is characterised in that this converter topology unit includes, active electric network, times
Repoussage flow network and electric capacity of voltage regulation；
Described active electric network, parallel with one another including two modules, each module is composed in series by switching tube and inductance；
Described voltage multiplying rectifier network, including the diode of two series connection, accesses one end of electric capacity, forms three between two diodes
End network；
Described electric capacity of voltage regulation, its positive pole is connected with diode cathode in the three-terminal network of voltage multiplying rectifier, its negative pole and active electric network
Input voltage negative pole connects.
Non-isolated high-gain DC-DC boost converter the most according to claim 1, it is characterised in that described is active
Network includes switching tube S1, switching tube S2, inductance L1, inductance L2；
Described voltage multiplying rectifier network includes diode D1, diode D2, electric capacity C1；
The upper end of switching tube S2 is connected with the upper end of inductance L2, directly connects the positive pole of direct-current input power supplying；Inductance L1 upper end and
Switching tube S2 lower end is connected；Switching tube S1 upper end is connected with inductance L2 lower end；Under the lower end of inductance L1 and switching tube S1
End is connected, and is directly accessed the negative pole of direct-current input power supplying；The positive pole of diode D1 is connected with the lower end of inductance L2, and negative pole is respectively
It is connected with positive pole, the positive pole of diode D2 of electric capacity C1；The negative pole of electric capacity C1 is connected with the lower end of switching tube S2, positive pole and
The positive pole of diode D2 is connected；The positive pole of electric capacity of voltage regulation C2 is connected with the negative pole of diode D2, negative pole and input DC power
Negative pole be connected；Load Rd and electric capacity of voltage regulation C2 is in parallel.
Non-isolated high-gain DC-DC boost converter the most according to claim 1, it is characterised in that include three works
It is respectively as follows: as mode
First operation mode: switching tube S1, switching tube S2 and diode D2 conducting, diode D1 ends；
Second operation mode: switching tube S1, switching tube S2 and diode D2 cut-off, diode D1 turns on；
3rd operation mode: switching tube S1, switching tube S2, diode D1, diode D2 are turned off.
Non-isolated high-gain DC-DC boost converter the most according to claim 3, it is characterised in that described switch
Pipe S2 and switching tube S1 uses same PWM wave control signal, carries out Synchronization Control.
Non-isolated high-gain DC-DC boost converter the most according to claim 3, it is characterised in that described first
Operation mode:
Direct current power source voltage is carried on inductance L1 and inductance L2 the most respectively, gives inductance L1 and inductance L2 charging respectively, this
Carve inductance L1 and the voltage U at inductance L2 two endsL1、UL2It is equal to supply voltage, inductance L1, the electric current I of inductance L2L1、IL2
The most linear growth；Supply voltage U simultaneouslyDCWith electric capacity C1 both end voltage UC1Connect and supply to electric capacity of voltage regulation C2 and load Rd
Electricity.
Non-isolated high-gain DC-DC boost converter the most according to claim 3, it is characterised in that two described works
Make mode:
Inductance L1, the induction electromotive force U at inductance L2 two endsL1、UL2, additional power source voltage UDCIt is serially connected to electric capacity C1
Charging；Load Rd is individually powered by electric capacity of voltage regulation C2.
Non-isolated high-gain DC-DC boost converter the most according to claim 3, it is characterised in that described first
Operation mode: three operation modes:
Inductance L1, the electric current I of inductance L2L1、IL2It is discontinuously zero.In whole topological structure, electric capacity of voltage regulation C2 give load Rd
Power supply.
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| CN106452077A (en) * | 2016-11-21 | 2017-02-22 | 天津大学 | High-boosting direct-current converter with switch inductance-capacitance |
| CN107947590A (en) * | 2017-12-12 | 2018-04-20 | 西安交通大学 | A kind of switching capacity two-way DC converter single supply integrated driving and control method |
| CN110299836A (en) * | 2019-04-29 | 2019-10-01 | 广东电网有限责任公司 | A kind of synchronously control booster converter based on gain unit |
| CN110611425A (en) * | 2019-08-30 | 2019-12-24 | 电子科技大学 | Current sharing method based on series-parallel Boost converter |
| CN110611425B (en) * | 2019-08-30 | 2021-08-06 | 电子科技大学 | Current sharing method based on series-parallel Boost converter |
| CN110620502A (en) * | 2019-09-29 | 2019-12-27 | 哈尔滨理工大学 | DC/DC converter for high-power charging device of electric automobile |
| CN110932544A (en) * | 2019-12-18 | 2020-03-27 | 广东电网有限责任公司 | Multi-input modular DC/DC converter |
| CN112234821A (en) * | 2020-11-13 | 2021-01-15 | 燕山大学 | High-gain direct-current converter topological structure based on active network |
| CN112737328A (en) * | 2020-12-18 | 2021-04-30 | 福州大学 | Non-isolated high-gain three-port converter |
| WO2023245743A1 (en) * | 2022-06-21 | 2023-12-28 | 国网江苏省电力有限公司电力科学研究院 | Zero-switching-loss non-isolated direct-current boost topology circuit and control method therefor |
| CN115664211A (en) * | 2022-12-14 | 2023-01-31 | 惠州市乐亿通科技有限公司 | DC/DC converter and power supply device |
| CN116111844A (en) * | 2023-04-13 | 2023-05-12 | 深圳市恒运昌真空技术有限公司 | Dual-switch converter and control method thereof |
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