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Crowbar circuit

A circuit and generator technology, applied in the field of Crowbar circuits, can solve problems such as easy damage of components, and achieve the effect of increasing the withstand voltage and solving easy damage.

Inactive Publication Date: 2017-07-28
XJ ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a crowbar circuit, which is used to solve the problem that the components and parts in the crowbar circuit in the prior art are easily damaged

Method used

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Embodiment Construction

[0018] The purpose of the present invention is to provide a crowbar circuit, which is used to solve the problem that components in the crowbar circuit in the prior art are easily damaged, and is not only suitable for wind power generation systems, but also suitable for other power generation systems.

[0019] To achieve the above object, the technical solution provided by the invention is:

[0020] A Crowbar circuit, comprising a rectification part and a discharge part; the DC side of the rectification part is connected to the discharge part, and the AC side is used to connect a generator; the discharge part includes a series switch unit and a discharge element; the The switch unit includes at least one series module, and the series module is formed by connecting at least two power switch tubes in series.

[0021] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] This embodiment provides a Crowbar circ...

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Abstract

The invention provides a Crowbar circuit. The Crowbar circuit comprises a rectification part and a discharging part. The direct current side of the rectification part is connected with the discharging part and the alternating current part is connected with a generator. The discharging part comprises a switch unit and a discharging element which are serially connected. The switch unit comprises at least one serially connected module. Each serially-connected module consists of at least two serially connected power switch tubes. According to the invention, the switch unit of the Crowbar circuit consists of the serially connected modules consisting of multiple serially connected power switch tubes, so the voltage resisting ability of the Crowbar circuit is improved and a problem that devices are easy to damage is solved.

Description

technical field [0001] The invention belongs to the technical field of electric power transmission, and in particular relates to a crowbar circuit. Background technique [0002] Wind power has become one of the world's recognized green energies, and all countries are vigorously building wind power projects. my country's "13th Five-Year Plan" has an annual installed capacity of more than 10GW, and the market capacity is huge. In the wind power generation system, the converter plays the role of energy conversion of the wind power generation system, and its performance directly affects the power generation of the wind power generation system and the friendliness of the wind power generation system to the grid. [0003] With the increasing installed capacity of wind power generation systems year by year, wind power generation systems are gradually developing toward large-capacity levels. At the same time, the country has higher and higher requirements for the reliability of wind...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/386Y02E10/76
Inventor 孙健刘刚翟超王青龙汪海涛王晓端朱元勋
Owner XJ ELECTRIC