This paper proposes a new short-circuit protection method for an IGBT. The proposed method is characterized by detecting not only gate charge but also gate voltage of the IGBT. This results in a shorter protection time, compared to the previous method that detects only the gate charge. A real-time monitoring system using an FPGA, A/D converters, and a D/A converter is used for the proposed prot...

Abstract With the continuous growth of load and enhancement grid structure, problem excessive short circuit current has become a key factor affecting safe operation China Southern Power Grid. The comparison measured data shows that calculation results Grid are optimistic based on existing method. It brings difficulties to arrangement power mode. This paper first briefly introduces principle IEC...