A family of ZVS positive common rail buck/boost converters for PMSM sensorless driving system

抄録

In this paper, a family of zero voltage switching (ZVS) buck/boost converters with positive common rail (PCRBBC) is proposed for the PMSM sensorless driving system in electric vehicles. The proposed family of PCRBBCs includes more than 12 topologies with coupled LC or LD auxiliary circuits. Their special characteristics are the common positive connection between input and output ports, ZVS conditions, and a variety of different topologies to be chosen. The operation principle, soft-switching realization limit, application conditions, design guidance of proposed ZVS PCRBBCs are analyzed. Finally, an experimental prototype is built to verify the correctness and validity of the proposed soft-switching topologies.