Research on Control Strategy of Reversible Charger for Electric Vehicles

With the rapid increase in the number of electric vehicles, a large number of electric vehicles have the function of reducing the pressure on the grid as a mobile energy storage source. However, the reversible charger of electric vehicles is extremely unstable and will affect the grid. The reversible charger for the electric vehicle is modeled and the corresponding control strategy is given in order to improve the robustness of the reversible charger. The control strategy of reversible charger is double closed-loop control that the voltage is controlled by fuzzy sliding mode variable structure control scheme and the current is controlled by the inner loop PI. Simulation results and analysis verify the feasibility of this method.