Power electronic converter, resonance balance circuit and control method thereof

A technology of balancing circuit and control method, applied in the direction of high-efficiency power electronic conversion, regulating electrical variables, control/regulating system, etc., can solve the problems of high cost, large loss of balancing circuit, multi-power devices, etc., to reduce losses and avoid costs high effect

Pending Publication Date: 2022-07-08
阳光电源(南京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the whole, some balanced circuits use hard switching technology, which has the problem of large loss of balanced circuits; some balanced circuits, although using resonant technology, require more power devices and have problems such as high cost

Method used

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  • Power electronic converter, resonance balance circuit and control method thereof
  • Power electronic converter, resonance balance circuit and control method thereof
  • Power electronic converter, resonance balance circuit and control method thereof

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Embodiment Construction

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] In this application, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also no Other elements expressly listed, or which are also inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the ph...

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PUM

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Abstract

The invention provides a power electronic converter, a resonance balance circuit and a control method thereof.According to the resonance balance circuit, a resonance assembly is arranged between the midpoints of switching tubes connected with half-bus capacitors, and the resonance assembly can conduct energy transfer on the two half-bus capacitors by controlling on-off of the switching tubes, so that the power electronic converter is achieved. Voltage balance between the two half-bus capacitors is realized; moreover, the on-off state of each switch tube is set to be switched when the resonance current of the resonance assembly is zero, so that the soft switching control of each switch tube can be realized, and the loss is reduced. In addition, only four power devices, namely the first to fourth switch tubes, are needed in the resonance balance circuit, so that the problem of high cost caused by a large number of power devices is avoided.

Description

technical field [0001] The present application relates to the technical field of power electronics, and in particular, to a power electronic converter, a resonant balance circuit and a control method thereof. Background technique [0002] With the development of power electronic technology, the application of multi-level technology is becoming more and more common; however, due to the complicated circuit application conditions, in order to ensure the balanced voltage division of capacitors, balanced circuits have been studied. [0003] At present, conventional balanced circuits include two-level balanced bridges and three-level balanced bridges, which can also be divided into resonant balanced bridges, non-resonant balanced bridges, and the like. On the whole, some balanced circuits use hard switching technology, which has the problem of large loss of balanced circuits; some balanced circuits, although using resonance technology, require more power devices, and there are pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/088H02M1/14
CPCH02M3/335H02M1/088H02M1/14Y02B70/10
Inventor 何安然陈鹏孙帅王志成林磊明高道伟
Owner 阳光电源(南京)有限公司
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