Study on Control Strategy of Harmonic Suppression in a Wide Power Range Based on V2G Bidirectional Onboard Charger

With the development and widespread use of electric vehicle (EV), the vehicle-to-grid technology (V2G) has become increasingly attractive. Considering the case of V2G bidirectional onboard charger has involved in power grid frequency regulation service and the characteristics of frequency regulation signal, this paper propose a control strategy for wide power range bidirectional current harmonic suppression by combining with the quasi proportional resonant (QPR) control and the weighted feedback current (WFC) control and introducing a peak restrained LCL filter. Simulation and experimental results are provided to validate the feasibility and correctness of the proposed control strategy.