A Novel Single-Driver Series-Parallel IGBTs Solid State Circuit Breaker Component

Solid-state dc circuit breaker (SSCB) has become a key component for fast fault isolation in high-voltage dc systems. However, their effectiveness often relies on complex series and parallel connections of numerous switches. To address the low flexibility and redundancies problems inherent in conventional circuit breakers, this article proposes a single-drive series–parallel insulated gate bipolar transistors (IGBTs) all-solid-state dc circuit breaker component (SCBC). The innovative approach can precisely control multiple series and parallel IGBTs by using only one gate driver and a small number of passive components. In this novel configuration, a shutdown signal triggers the first-stage IGBTs. Once activated, the energy storage capacitor causes the subsequent IGBTs to shut down continuously. In SCBC, the main switches are connected in series and parallel, the breaking current capability is improved. In particular, the componentized design concept makes the topology is extensible and enhances the flexibility of SSCBs. Finally, the operating principle and design guidelines of SCBC are illustrated in detail through the creation of a mathematical model and topology, and their effectiveness is demonstrated through simulation and experimentation.