A negative-bus auxiliary resonant circuit (NBARC) and novel mirror symmetrical pair of resonant link modules for soft commutation of two -level and three-level inverters is presented.

• 提出了一个直流负总线辅助谐振电路(NBARC)与新型直流侧谐振电路镜像对称对模块设计；用以实现两电平和三电平逆变器的软换流.