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Control method and system for resonant converter

A technology of resonant converter and control method, which is applied in the field of electric power and can solve problems such as grid damage

Active Publication Date: 2020-11-06
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a control method and system for a resonant converter, so as to at least solve the technical problem that the resonant converter causes damage to the power grid during a large disturbance

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  • Control method and system for resonant converter
  • Control method and system for resonant converter
  • Control method and system for resonant converter

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a control method and system for a resonant converter. Wherein, the method includes: detecting the working state of the resonant converter, wherein the working state includes: a capacitive working state and an inductive working state; when the resonant converter is in the capacitive working state , to restart the resonant converter. The invention solves the technical problem that the resonant converter causes damage to the power grid during a period of large disturbance.

Description

technical field [0001] The present invention relates to the field of electric power, in particular to a control method and system for a resonant converter. Background technique [0002] Electric vehicle DC charging piles generally use DC / DC converters, and pulse width modulation (PWM) and resonance modulation are the two main types of DC / DC converters. With the ability to achieve zero-voltage switching (ZVS) or zero-current switching (ZCS), resonant converters can operate at very high switching frequencies, reducing the size and weight of transformers and filters, and achieving high efficiency. [0003] However, the resonant converter is unstable during a large disturbance, which will cause certain damage to the grid. [0004] No effective solution has been proposed so far for the above-mentioned problem of damage caused by the resonant converter to the grid during periods of large disturbances. Contents of the invention [0005] Embodiments of the present invention prov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/33569H02M1/0003Y02B70/10
Inventor 刘秀兰金渊朱洁陈平李国昌李香龙赵宇彤张宝群陈熙曾爽陈建树焦东升杨冰关宇迟忠君张倩程林
Owner STATE GRID BEIJING ELECTRIC POWER