A high power semiconductor circuit breaker

Abstract

This invention provides a high-power semiconductor shutdown switch. A main switch selects a reverse switching dynistor RSD, and the RSD is a novel high-power semiconductor closed switch. Compared with a common thyristor, the RSD is strong in through-current capacity and small in current changing rate and time delay jittering. A fast-recovery thyristor is selected as a primary switch, therefore, energy loss in the current conversion process is reduced, and output efficiency is improved. The high-power semiconductor shutdown switch on the basis of switch current conversion of the RSD has the advantages of being capable improving the peak value current, the current changing rate and the output efficiency of an output pulse and reducing output time delay and jittering and particularly applicable to the field of application of the long-pulse large current.

Description

technical field [0001] The invention relates to a high-power semiconductor circuit breaker, which is mainly used in an inductive energy storage type pulse power supply system. Background technique [0002] In the pulse power system, the commonly used circuit breakers are: mechanical switch, plasma erosion switch or electric explosion wire switch, thyristor circuit breaker switch and SOS (Semiconductor Opening Switch), etc., mechanical switch, plasma erosion switch or electric explosion wire switch in There are certain problems in terms of life, maintenance, and repetitive frequency work. The thyristor disconnect switch and SOS are mainly limited by the device's disconnection capability. At present, the breaking current capacity of the commercialized semiconductor circuit breaker is about 4kA. In recent years, with the development of the new semiconductor RSD switch, it provides a new way to improve the commutation capacity of the new semiconductor circuit breaker. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] In order to avoid the deficiencies of the prior art, the present invention proposes a high-power semiconductor circuit breaker, aiming at the problems of low circuit breakability, large turn-on loss and low output efficiency of the existing fast thyristors based on reverse forced commutation. Reverse forced commutation circuit based on RSD switch reduces system delay and jitter, improves flow capacity, reduces turn-on loss, and improves output efficiency

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