In order to achieve energy-saving operation of three-phase bridge rectifier

the topology of an energy-saving three-phase bridge zero-current switching rectifier is proposed. The switching devices of the rectifier can achieve zero-current turn off when the auxiliary resonant circuit on the bridge arm of each phase is in the working state. Three-phase bridge rectifier usually uses insulated gate bipolar transistor (IGBT) as switching devices and the realization of zero-current turn off can eliminate the switching loss caused by tail current of IGBT. The working process of the circuit is analyzed. The experimental results on a three-phase 3kW prototype show that the switching devices achieve zero-current soft-switching. Therefore

this topology can achieve the energy-saving operation of three-phase bridge rectifier which uses IGBT as switching devices.