DC circuit breaker plays an important role in the reliability of HVdc system, but the large number of expensive press-pack insulated-gate bipolar transistors (IGBTs) is used at present, which is a ...

DC circuit breaker (DCCB) is one of the key equipments to ensure the safe and stable operation of MMC-HVDC power grids. In this paper, we investigate a novel topology of DC circuit breaker based on ...