Malfunction analysis of SiC-SIT DC circuit breaker in 400V-DC power supply system

In DC power supply system, a fast response circuit breaker is required. Semiconductor DC circuit breaker is an important key technology in DC power supply system. This paper considers the malfunction issue of Silicon Carbide-Static Induction Transistor (SiC-SIT) based DC circuit breaker in DC power supply system. The malfunction mechanism is explained, and a solution methodology proposed. Investigations are achieved by MATLAB/Simulink and experimented work.

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