Abstract
An effective DC solid state circuit breaker (SSCB) based on cathode-short MOS-controlled thyristor (CS-MCT) is evaluated in this paper. Firstly, the low on-state resistance and high surge current capability of the CS-MCT are proved through experimental results, thus indicating that the CS-MCT is a competitive device in SSCB applications. Moreover, an effective SSCB based on CS-MCT is designed. Both the behaviors of the CS-MCT and the SSCB topology is studied via simulations and prototype experiments. According to the research, the proposed SSCB can achieve a reliable fault interruption capability once the mis-triggering of the CS-MCT is effectively suppressed.
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