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Bidirectional power converter, circuit and system

A power converter and power technology, which is applied in the direction of conversion of AC power input into DC power output, DC power input into DC power output, output power conversion device, etc., can solve the problem that bidirectional power converters cannot meet the wide operating voltage range Demand, inefficiency, etc.

Inactive Publication Date: 2020-10-16
SHIJIAZHUANG TONHE ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a bidirectional power converter, circuit and system to solve the problem that the bidirectional power converter in the prior art cannot meet the requirements of a wide operating voltage range, and the efficiency near some operating points is not high

Method used

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  • Bidirectional power converter, circuit and system
  • Bidirectional power converter, circuit and system
  • Bidirectional power converter, circuit and system

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Embodiment Construction

[0042] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0043] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0044] refer to figure 1 Now, the bidirectional power converter provided by the embodiment of the present invention will be described. The bidirectional power converter 10 includes: a control module (not shown), a bidirectional power conversion module and a first auxil...

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Abstract

The invention is suitable for the technical field of switching power supplies, and provides a bidirectional power converter, circuit and system, and the bidirectional power converter comprises a control module, a bidirectional power conversion module which comprises a primary side bridge arm, a secondary side bridge arm and a transformer, and a first auxiliary regulation and control module which comprises a first auxiliary bridge arm and a first auxiliary winding. Two ends of the first auxiliary bridge arm are correspondingly connected with two ends of the primary side bridge arm and / or the secondary side bridge arm; a first end of the first auxiliary winding is connected with a target end of the transformer, and a second end of the first auxiliary winding is connected with connecting endsof upper and lower half bridges of the first auxiliary bridge arm; and the control module is connected with the switching tubes on the primary side bridge arm, the secondary side bridge arm and the first auxiliary bridge arm. According to the invention, the control module is used for controlling the on / off of the switching tube in the first auxiliary bridge arm, thereby controlling the first auxiliary winding, enabling the bidirectional power converter to work under different transformer turn ratios, and broadening the voltage application range of the bidirectional power converter.

Description

technical field [0001] The invention belongs to the technical field of switching power supplies, and in particular relates to a bidirectional power converter, a circuit and a system. Background technique [0002] With the popularization of new energy technologies and the development of energy Internet, bidirectional power converters are becoming more and more widely used in application scenarios such as energy storage power stations and electric vehicle to grid (Vehicle to grid, V2G) charging systems. At the same time, the voltage range of electric vehicle power batteries is getting wider and wider, and the requirements for the voltage adaptation range of charging facilities are also getting higher and higher. It has gradually evolved from 200-500V in the past to 200-750V, and has been further expanded to 200-1000V. trend. [0003] At present, most of the bidirectional power converters in the V2G scheme use the Dual Active Bridge-Capacitor Inductor Inductor Capacitor (DAB-C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M7/48
CPCH02M3/3353H02M7/48H02M7/4815Y02B70/10
Inventor 宋波刘志宾李涛永徐艳超张现民杨旭东尚英坤张涛张逾良
Owner SHIJIAZHUANG TONHE ELECTRONICS TECH CO LTD
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