RESEARCH ON CONTROL STRATEGY OF ELECTRIC VEHICLE CHARGING AND DISCHARGING IN MICROGRID

In order to achieve a clean, efficient energy utilize, effectively alleviate the increasingly serious energy crisis and environmental pollution. The paper builds a typical microgrid composed of inverters-based on multi-micro-generators and adopts the master/slaver control strategy, that is, electric vehicle charging and discharging system acts the master control source, while wind turbines, photovoltaic and storage system act as slaver control source. Using PSCAD software to establish its dynamic simulation model and study the control strategy and dynamic operating characteristics of the electric vehicle charging and discharging and the microgrid under grid-connected mode, isolated mode and their transition mode to achieve smooth operation and ensure grid security, stability. Finally, it has been demonstrated that the feasibility of the control strategy.