一种在直流断路器应用中使用超高驱动电压的IGBT电流提升方法

High-voltage direct current (HVdc) circuit breakers based on power electronic technology usually require a large number of insulated-gate bipolar transistors (IGBTs) to achieve large-capacity breaking. The insufficient current capacity is an important reason for the excessive cost of dc circuit breakers. However, the single switching condition in the circuit breaker makes it possible for IGBTs to ...