Highly integrated bidirectional vehicle-to-grid (V2G) for electric vehicles based on open winding permanent magnet synchronous motor

This paper proposes a novel integrated control system including PMSM drive and vehicle-to-grid (V2G) technology based on open winding PMSM. It realizes motor drive mode and bidirectional energy flow for Electric Vehicles in V2G control mode. These modes can be switched easily and smoothly according to commands from integrated controller. Compared with the traditional EVs control system which controls motor drive and V2G technology using independent main circuit topology, the proposed control system uses motor stator winding as filtering inductor, eliminating the additional filtering inductor, and decreasing the quantity of IGBTs, which greatly reduce the volume of the Electric Vehicles control system and the cost of the product. It also increases the power density of electric vehicle control system. At last, the correctness and feasibility of the proposed integrated control system are verified by theoretical analysis and simulation.