CN111404381A - Power electronic transformer sub-module topology based on DAB and control method thereof - Google Patents

Power electronic transformer sub-module topology based on DAB and control method thereof Download PDF

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Publication number
CN111404381A
CN111404381A CN201910003921.6A CN201910003921A CN111404381A CN 111404381 A CN111404381 A CN 111404381A CN 201910003921 A CN201910003921 A CN 201910003921A CN 111404381 A CN111404381 A CN 111404381A
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China
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bridge arm
bridge
power electronic
dab
bridge circuit
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CN201910003921.6A
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Chinese (zh)
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CN111404381B (en
Inventor
魏星
吴小丹
杨晨
陈武
马大俊
舒良才
郁正纲
伏祥运
孙海霞
朱立位
岳付昌
袁晓冬
史明明
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State Grid Jiangsu Electric Power Co Ltd
NR Electric Co Ltd
NR Engineering Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
Lianyungang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Original Assignee
State Grid Jiangsu Electric Power Co Ltd
NR Electric Co Ltd
NR Engineering Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
Lianyungang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
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Priority to CN201910003921.6A priority Critical patent/CN111404381B/en
Publication of CN111404381A publication Critical patent/CN111404381A/en
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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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
    • H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a DAB-based power electronic transformer submodule topology and a control method thereof, which can form a power electronic transformer with a CHB structure and realize electric energy conversion from medium-high voltage alternating current to medium-high voltage direct current and low-voltage direct current. On the basis of a DAB converter structure, the topology can realize zero-voltage switching-on of a multiplexing switch tube in the sub-module topology by multiplexing a half-bridge structure and combining a corresponding control strategy, is favorable for reducing the loss of a switch device and improving the efficiency of the converter, and has the advantages of few switch devices and compact structure.

Description

Power electronic transformer sub-module topology based on DAB and control method thereof
Technical Field
The invention relates to a power electronic transformer submodule topology based on a DAB (dual active bridge power converter) converter and a control method thereof, belonging to the technical field of power electronics.
Background
With the rapid development of renewable energy power generation and the increase of direct-current loads, the traditional power frequency transformer is not enough to meet the requirements and challenges of modern power systems due to the lack of an intelligent control link and a direct-current conversion port. And the power frequency transformer is huge in size and heavy, and requires a large floor area. With the rapid development of semiconductor devices, a novel intelligent transformer based on a high-power electronic converter technology is provided, the weight and the volume of the transformer can be reduced, various alternating current/direct current ports can be provided, the controllability is flexible and changeable, flexible access of various distributed energy sources, energy storage and loads is facilitated, and the possibility is provided for efficiently solving various problems faced by the current power grid.
At present, many researchers have proposed various power electronic transformer topologies, but generally, a modular multilevel converter or a cascaded full-bridge topology is used to rectify a high-voltage alternating current into a high-voltage direct current, and then a structure in which a plurality of DC-DC converters are connected in series and in parallel is used to step down the high-voltage direct current into a low-voltage direct current. The power electronic transformer topologies use more power devices, and the AC side switch tube is difficult to realize soft switching, which results in larger loss and low efficiency, and hinders the further development of the power electronic transformer.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a power electronic transformer submodule topology based on a DAB converter and a control method thereof, and solves the problems that soft switching cannot be realized by a switching device of a high-voltage alternating-current side submodule of the power electronic transformer topology, so that the loss is large and the overall efficiency is low.
The invention specifically adopts the following technical scheme to solve the technical problems:
a DAB-based power electronic transformer submodule topology is composed of a primary side bridge circuit, a high-frequency transformer and a secondary side bridge circuit, wherein the primary side bridge circuit is composed of three groups of bridge arms, a first energy storage capacitor and an inductor, and the three groups of bridge arms comprise switching tubesQ 1/Q 2The first bridge arm is composed of a switch tubeQ 3/Q 4The second bridge arm is composed of a switch tubeS 1/S 2A fifth bridge arm; a middle point of a fifth bridge arm on the primary side and a second bridge arm forms an alternating current port; the intermediate point of the second bridge arm and the first bridge arm on the primary side is connected with the primary side of the high-frequency transformer through an inductorThe three groups of bridge arms are connected with the first energy storage capacitor in parallel; the secondary bridge circuit is formed by connecting a full-bridge circuit and a second energy storage capacitor in parallel, the middle point of the full-bridge circuit is connected with a secondary winding of the high-frequency transformer, and the secondary full-bridge circuit comprises a switching tubeQ 5/Q 6Third arm and switching tubeQ 7/Q 8And the fourth bridge arm.
The invention correspondingly provides a control method of the sub-module topology of the power electronic transformer based on the DAB, which adopts a control method combining duty ratio control and phase shift control, wherein the duty ratio is determined by the modulation wave at the alternating current side, and the phase shift angle is determined by the actually transmitted power of the power electronic transformer. In the control method, the duty ratio of the bridge arm at the alternating current side is still determined by the control strategy of the traditional cascade H-bridge converter, but the DAB converter control does not adopt single phase-shift control any more, and adopts the combination of duty ratio control and phase-shift control.
Further, the switch tubeQ 1/Q 2A first bridge arm with a duty ratio obtained by comparing an AC side modulation wave with a triangular carrier wave, andQ 1、 Q 2driving complementation; for the switch tubeQ 3/Q 4The duty ratio of the second bridge arm is obtained by comparing the alternating-current side modulation wave with the triangular carrier wave, but the phase difference between the triangular carrier wave in the second bridge arm and the phase difference between the triangular carrier wave in the first bridge arm is 180 degrees; accordingly, forQ 5/Q 6AndQ 7/Q 8the modulation method of the third and the fourth bridge arms is the same as that of the first and the second bridge arms, but the three-angle carrier wave delays a certain phase relative to the first and the second bridge arms, namely a phase shift angle.
Further, the phase shift angle is obtained by adopting direct current side voltage closed loop control.
The invention also provides a second DAB-based power electronic transformer submodule topology which comprises a primary side bridge circuit, a high-frequency transformer and a secondary side bridge circuit, wherein the primary side bridge circuit comprises a full bridge circuit, a first energy storage capacitor and an inductor, and the primary side full bridge circuit comprises a switching tubeQ 1/Q 2First bridge arm and switching tubeQ 3/Q 4The middle point of the first bridge arm and the lower tube emitter of the first bridge arm jointly form an alternating current output port, the middle point of the primary second bridge arm and the first bridge arm is connected with a primary winding of a high-frequency transformer through an inductor, and the two groups of bridge arms are connected with a first energy storage capacitor in parallel; the secondary bridge circuit is formed by connecting a full-bridge circuit and a second energy storage capacitor in parallel, the middle point of the full-bridge circuit is connected with a secondary winding of the high-frequency transformer, and the secondary full-bridge circuit comprises a switching tubeQ 5/Q 6Third arm and switching tubeQ 7/Q 8And the fourth bridge arm.
The invention correspondingly provides the second DAB-based control method of the power electronic transformer submodule topology, which adopts a control method combining duty ratio control and phase shift control, wherein the duty ratio is determined by the modulation wave at the alternating current side, and the phase shift angle is determined by the actually transmitted power of the power electronic transformer. In the control method, the duty ratio of the half-bridge arm at the alternating current side is still determined by the control strategy of the traditional cascade H-bridge converter, but the DAB converter control does not adopt single phase-shift control any more, but adopts the combination of duty ratio control and phase-shift control.
Further, the switch tubeQ 1/Q 2A first bridge arm with a duty ratio obtained by comparing an AC side modulation wave with a triangular carrier wave, andQ 1、 Q 2driving complementation; for the switch tubeQ 3/Q 4The duty ratio of the second bridge arm is obtained by comparing the alternating-current side modulation wave with the triangular carrier wave, but the phase difference between the triangular carrier wave in the second bridge arm and the phase difference between the triangular carrier wave in the first bridge arm is 180 degrees; accordingly, forQ 5/Q 6AndQ 7/Q 8the modulation method of the third and the fourth bridge arms is the same as that of the first and the second bridge arms, but the three-angle carrier wave delays a certain phase relative to the first and the second bridge arms, namely a phase shift angle.
Further, the phase shift angle is obtained by adopting direct current side voltage closed loop control.
The invention has the beneficial effects that: the invention improves the traditional power electronic transformer sub-module topology based on the cascade H-bridge converter and the DAB converter, can realize zero-voltage switching-on of a multiplexing switch tube and a DAB converter switch tube by multiplexing a half-bridge structure and combining a corresponding control strategy, is beneficial to reducing the switching loss of devices, improves the efficiency and reduces the number of sub-module switch devices.
Drawings
Fig. 1 is a full-bridge sub-module topology diagram of a sub-module topology of a power electronic transformer based on DAB in the present invention.
Fig. 2 is a half-bridge sub-module topology diagram of a sub-module topology of a power electronic transformer based on DAB in the present invention.
FIG. 3 is a topological diagram of a sub-module of a conventional DAB-based power electronic transformer.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, a full-bridge sub-module topology diagram of a sub-module topology of a DAB-based power electronic transformer is provided in the present invention. The invention improves the traditional power electronic transformer submodule topology based on a cascade H-bridge converter and a DAB converter, and the novel submodule topology consists of a primary side bridge circuit, a high-frequency transformer and a secondary side bridge circuit, wherein the primary side bridge circuit consists of three groups of bridge arms, a first energy storage capacitor and an inductor, and the three groups of bridge arms consist of switching tubesQ 1/Q 2The first bridge arm is composed of a switch tubeQ 3/Q 4The second bridge arm is composed of a switch tubeS 1/S 2A fifth bridge arm; a middle point of a fifth bridge arm on the primary side and a second bridge arm forms an alternating current port; the middle point of a second bridge arm on the primary side and the middle point of a first bridge arm are connected with a primary winding of a high-frequency transformer through an inductor, and three groups of bridge arms are connected with a first energy storage capacitor in parallel; the secondary bridge circuit is formed by connecting a full-bridge circuit and a second energy storage capacitor in parallel, the middle point of the full-bridge circuit is connected with a secondary winding of the high-frequency transformer, and the secondary winding is fullThe bridge circuit comprises a switching tubeQ 5/Q 6Third arm and switching tubeQ 7/Q 8And the fourth bridge arm. According to the sub-module topology, by multiplexing the half-bridge structure and combining a corresponding control strategy, zero-voltage switching-on of a multiplexing switch tube and a DAB converter switch tube can be realized, the switching loss of devices is reduced, the efficiency is improved, and the number of sub-module switch devices is reduced. The topological structure can also remove a bridge arm formed by the switching tubes S1/S2, only the middle point of the first bridge arm formed by the switching tubes Q1/Q2 and the emitter of the Q2 tube form a new output port, a half-bridge sub-module topological structure can be formed, and the topological structure can be used in a power electronic transformer system with an MMC structure.
According to the power electronic transformer full-bridge submodule topology control method based on DAB, the duty ratio of an alternating current side bridge arm is still determined by a control strategy of a traditional cascade H-bridge converter, but the DAB converter control does not adopt single phase-shift control any more, and the duty ratio control and the phase-shift control are combined, wherein the duty ratio is determined by alternating current side modulation waves, and the phase-shift angle is determined by the power actually transmitted by the DAB converter. Regarding the generation of specific driving waveforms, for the first arm formed by the switching tubes Q1/Q2 of the DAB converter, the duty ratio is obtained by comparing an alternating-current side modulation wave with a triangular carrier wave, and the Q1 and the Q2 are driven and complemented; the duty ratio of the second arm formed by switching tubes Q3/Q4 is also obtained by comparing the ac-side modulated wave with the triangular carrier wave, but the triangular carrier wave in the second arm is 180 degrees out of phase with the triangular carrier wave in the first arm. Correspondingly, for the third arm and the fourth arm of the DAB converter composed of Q5/Q6 and Q7/Q8, the modulation method is the same as that of the first arm and the second arm, but the triangular carrier waves are respectively delayed relative to the first arm and the second arm by certain phases, the phases determine the magnitude and the direction of transmitted power, and the three-phase delay-locked loop control method can be obtained by adopting a direct current side voltage closed loop control method or other methods.
FIG. 2 shows a half-bridge sub-module topology diagram of a sub-module topology of a power electronic transformer based on DAB, which comprises a primary side bridge circuit, a high frequency transformer and a secondary side bridge circuit, wherein the primary side bridge circuit comprises a full-bridge circuit, a first energy storage capacitor and an inductorThe primary side full bridge circuit comprises a switching tubeQ 1/Q 2First bridge arm and switching tubeQ 3/Q 4The middle point of the first bridge arm and the lower tube emitter of the first bridge arm jointly form an alternating current output port, the middle point of the primary second bridge arm and the first bridge arm is connected with a primary winding of a high-frequency transformer through an inductor, and the two groups of bridge arms are connected with a first energy storage capacitor in parallel; the secondary bridge circuit is formed by connecting a full-bridge circuit and a second energy storage capacitor in parallel, the middle point of the full-bridge circuit is connected with a secondary winding of the high-frequency transformer, and the secondary full-bridge circuit comprises a switching tubeQ 5/Q 6Third arm and switching tubeQ 7/Q 8And the fourth bridge arm.
The half-bridge sub-module topology control method of the power electronic transformer sub-module topology based on DAB is as follows, the duty ratio of an alternating current side half-bridge arm is still determined by the control strategy of the traditional cascade H-bridge converter, but the DAB converter control does not adopt single phase-shift control any more, but adopts the combination of duty ratio control and phase-shift control, wherein the duty ratio is determined by an alternating current side modulation wave, and the phase-shift angle is determined by the power actually transmitted by the DAB converter. Regarding the generation of specific driving waveforms, for the first arm formed by the switching tubes Q1/Q2 of the DAB converter, the duty ratio is obtained by comparing an alternating-current side modulation wave with a triangular carrier wave, and the Q1 and the Q2 are driven and complemented; the duty ratio of the second arm formed by switching tubes Q3/Q4 is also obtained by comparing the ac-side modulated wave with the triangular carrier wave, but the triangular carrier wave in the second arm is 180 degrees out of phase with the triangular carrier wave in the first arm. Correspondingly, for the third and the fourth arms formed by Q5/Q6 and Q7/Q8 of the DAB converter, the modulation method is the same as that of the first arm and the second arm, but the triangular carrier waves are delayed by certain phases relative to the first arm and the second arm respectively, and can be obtained by adopting direct current side voltage closed-loop control or other methods.
The invention improves the traditional power electronic transformer sub-module topology based on the cascade H-bridge converter and the DAB converter, can realize zero voltage switching-on of a multiplexing switch tube and a DAB converter switch tube by multiplexing a half-bridge structure and combining a corresponding control strategy, is beneficial to reducing the switching loss of devices and improving the efficiency, and reduces the number of sub-module switching devices compared with the traditional power electronic transformer sub-module topology shown in figure 3.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (8)

1. The utility model provides a power electronic transformer submodule piece topology based on DAB which characterized in that: the high-frequency transformer comprises a primary side bridge circuit, a high-frequency transformer and a secondary side bridge circuit, wherein the primary side bridge circuit comprises three groups of bridge arms, a first energy storage capacitor and an inductor, the three groups of bridge arms comprise a first bridge arm formed by switching tubes Q1/Q2, a second bridge arm formed by switching tubes Q3/Q4 and a fifth bridge arm formed by switching tubes S1/S2; a middle point of a fifth bridge arm on the primary side and a second bridge arm forms an alternating current port; the middle point of a second bridge arm on the primary side and the middle point of a first bridge arm are connected with a primary winding of a high-frequency transformer through an inductor, and three groups of bridge arms are connected with a first energy storage capacitor in parallel; the secondary side bridge circuit is formed by connecting a full bridge circuit and a second energy storage capacitor in parallel, the middle point of the full bridge circuit is connected with a secondary side winding of the high-frequency transformer, and the secondary side full bridge circuit comprises a third bridge arm formed by switching tubes Q5/Q6 and a fourth bridge arm formed by switching tubes Q7/Q8.
2. A method for controlling a DAB-based power electronic transformer sub-module topology according to claim 1, characterized in that: the control method combining duty ratio control and phase shift control is adopted, wherein the duty ratio is determined by alternating current side modulation waves, and the phase shift angle is determined by the power actually transmitted by the power electronic transformer.
3. A method for controlling a DAB-based power electronic transformer sub-module topology as claimed in claim 2, characterized in that: a first bridge arm composed of switching tubes Q1/Q2, wherein the duty ratio of the first bridge arm is obtained by comparing an alternating-current side modulation wave with a triangular carrier wave, and the first bridge arm is driven and complemented by Q1 and Q2; for the second bridge arm formed by the switching tubes Q3/Q4, the duty ratio is obtained by comparing the alternating-current side modulation wave with the triangular carrier wave, but the phase difference between the triangular carrier wave in the second bridge arm and the phase difference between the triangular carrier wave in the first bridge arm is 180 degrees; correspondingly, for the third and the fourth arms composed of Q5/Q6 and Q7/Q8, the modulation method is the same as that of the first and the second arms, but the three-angle carrier waves are delayed by a certain phase, namely phase shift angle, relative to the first and the second arms respectively.
4. A method for controlling a sub-module topology of a DAB-based power electronic transformer as claimed in claim 3, characterized in that: the phase shift angle is obtained by adopting direct current side voltage closed loop control.
5. The utility model provides a power electronic transformer submodule piece topology based on DAB which characterized in that: the high-frequency transformer comprises a primary side bridge circuit, a high-frequency transformer and a secondary side bridge circuit, wherein the primary side bridge circuit comprises a full bridge circuit, a first energy storage capacitor and an inductor, the primary side full bridge circuit comprises a first bridge arm consisting of a switching tube Q1/Q2 and a second bridge arm consisting of a switching tube Q3/Q4, the midpoint of the first bridge arm and the lower tube emitter of the first bridge arm jointly form an alternating current output port, the middle point of the first bridge arm and the middle point of the second bridge arm of the primary side are connected with a primary winding of the high-frequency transformer through the inductor, and the two groups of bridge arms are connected with the first energy storage; the secondary side bridge circuit is formed by connecting a full bridge circuit and a second energy storage capacitor in parallel, the middle point of the full bridge circuit is connected with a secondary side winding of the high-frequency transformer, and the secondary side full bridge circuit comprises a third bridge arm formed by switching tubes Q5/Q6 and a fourth bridge arm formed by switching tubes Q7/Q8.
6. A control method for a DAB based power electronic transformer sub-module topology according to claim 5, characterized in that: the control method combining duty ratio control and phase shift control is adopted, wherein the duty ratio is determined by alternating current side modulation waves, and the phase shift angle is determined by the power actually transmitted by the power electronic transformer.
7. A method for controlling a DAB-based power electronic transformer sub-module topology as claimed in claim 6, characterized in that: a first bridge arm composed of switching tubes Q1/Q2, wherein the duty ratio of the first bridge arm is obtained by comparing an alternating-current side modulation wave with a triangular carrier wave, and the first bridge arm is driven and complemented by Q1 and Q2; for the second bridge arm formed by the switching tubes Q3/Q4, the duty ratio is obtained by comparing the alternating-current side modulation wave with the triangular carrier wave, but the phase difference between the triangular carrier wave in the second bridge arm and the phase difference between the triangular carrier wave in the first bridge arm is 180 degrees; correspondingly, for the third and the fourth arms composed of Q5/Q6 and Q7/Q8, the modulation method is the same as that of the first and the second arms, but the three-angle carrier waves are delayed by a certain phase, namely phase shift angle, relative to the first and the second arms respectively.
8. A control method for a DAB based power electronic transformer sub-module topology according to claim 7, characterized in that: the phase shift angle is obtained by adopting direct current side voltage closed loop control.
CN201910003921.6A 2019-01-03 2019-01-03 DAB-based power electronic transformer submodule topology and control method thereof Active CN111404381B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113258817A (en) * 2021-06-24 2021-08-13 国创移动能源创新中心(江苏)有限公司 Single-stage isolated bidirectional converter and control method thereof

Citations (5)

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Publication number Priority date Publication date Assignee Title
US5355294A (en) * 1992-11-25 1994-10-11 General Electric Company Unity power factor control for dual active bridge converter
CN104201908A (en) * 2014-09-24 2014-12-10 武汉大学 Solid-state transformer based locomotive AC-DC-AC traction system and method
CN105680488A (en) * 2016-01-27 2016-06-15 东南大学 MMC (modular multiple converter) type multi-port power electronic transformer applied to alternating current/direct current hybrid power distribution network
CN107493015A (en) * 2017-09-14 2017-12-19 北京理工大学 A kind of two-way DC DC converters and its Poewr control method based on dual transformer structure
CN207706055U (en) * 2017-12-29 2018-08-07 华中科技大学 A kind of DC-DC converter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355294A (en) * 1992-11-25 1994-10-11 General Electric Company Unity power factor control for dual active bridge converter
CN104201908A (en) * 2014-09-24 2014-12-10 武汉大学 Solid-state transformer based locomotive AC-DC-AC traction system and method
CN105680488A (en) * 2016-01-27 2016-06-15 东南大学 MMC (modular multiple converter) type multi-port power electronic transformer applied to alternating current/direct current hybrid power distribution network
CN107493015A (en) * 2017-09-14 2017-12-19 北京理工大学 A kind of two-way DC DC converters and its Poewr control method based on dual transformer structure
CN207706055U (en) * 2017-12-29 2018-08-07 华中科技大学 A kind of DC-DC converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113258817A (en) * 2021-06-24 2021-08-13 国创移动能源创新中心(江苏)有限公司 Single-stage isolated bidirectional converter and control method thereof

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