Vector control modelling of vehicle to grid charging and discharging converter

In this paper, a space vector based new control strategy and circuit topology structure of electric vehicle charging and discharging converter is proposed. The control strategy uses rotation vector of the directional three-phase active tide reversible PWM converter, and the circuit topology is two-way control DC/DC converter with double buck reversible structure. In order to improve the efficiency of vehicle to grid charging and discharging converter (V2GCDC), main circuit of the converter adopts isolation method, which is suitable for high power direct voltage battery group. The Euler-Lagrange method is used to analyze dynamic process and control method of V2GCDC. The simulation results show that the double buck reversible structure has the function of electric power flowing with two-way, the transmission power factor is 1, and the harmonic is under control within 2%.