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Diode bridge low-inductance module for circuit breaker

A diode bridge and diode technology, which is applied in the field of diode bridge low-sensitivity modules, can solve the problems of large parasitic inductance, complex electrical connection of diodes, and excessive loop area, etc., and achieve the effects of fast assembly, convenient maintenance, and compact overall structure

Active Publication Date: 2019-02-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a diode bridge low inductance module for circuit breakers to solve the problems of complex electrical connection, excessive loop area and large parasitic inductance in the existing diode low inductance

Method used

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  • Diode bridge low-inductance module for circuit breaker
  • Diode bridge low-inductance module for circuit breaker
  • Diode bridge low-inductance module for circuit breaker

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] The object of the present invention is to provide a diode bridge low-inductance module for a circuit breaker to solve the problems of complicated electrical connection, excessive loop area and large parasitic inductance in the existing diode low-inductance.

[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with t...

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Abstract

The invention discloses a diode bridge low-inductance module for a circuit breaker. The diode bridge low-inductance module comprises an IEGT press-fitting structure, a diode press-fitting structure, adamping capacitor, a damping resistor and a connecting busbar set; a C-pole conducting plate is shared by C poles of two IEGTs welded in a pressed mode in the IEGT press-fitting structure, and an E-pole arched connecting bar is shared by E poles; a negative electrode conducting plate is shared by diodes welded in a pressed mode in the diode press-fitting structure share, so that electrical connecting lines in most units are removed, the number of the electrical connecting lines is reduced, the loop area is reduced, the structure of the diode bridge low-inductance module is more compact, the space occupation is small, and the cost is reduced; and the branch inductance and the loop inductance of the diode bridge low-inductance module used for a transfer branch of the circuit breaker are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a diode bridge low-inductance module used for a circuit breaker. Background technique [0002] The circuit breaker is the core component for breaking the short-circuit current in the flexible direct current transmission system. It is composed of three branches, the transfer branch, the main branch and the energy absorption branch, which are connected in parallel. The main branch is composed of ultra-high-speed mechanical switches and a small number of bridge low-sensitivity modules in series; the transfer branch is composed of multi-pole diode bridge low-sensitivity modules connected in series, which is used to carry and break the fault current of the DC system for a short time; the energy consumption branch It is composed of multiple arrester groups connected in parallel to suppress breaking overvoltage and absorb energy. [0003] When the circuit breaker receives the...

Claims

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Application Information

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IPC IPC(8): H02H7/26
Inventor 齐磊刘珂鑫东野忠昊张晓青马江江沈弘
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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