一种通过VGE作为退饱和前兆的直流断路器浪涌电流应用中更可靠、灵敏的过流检测方法

Desaturation has always been one of the most severe threats to IGBT safety operations. The current mainstream IGBT drivers used in dc breakers primarily choose on-state voltage VCEsat as the monitor parameter of IGBT desaturation. However, this detection method requires the device first to enter the high-loss desaturation region, which may eventually lead to the thermal breakdown of the IGBT devic...