Fuzzy Controller Based Partial Charging System For Electric Vehicles

In this paper, an EV charging station is implemented using partial charging system for Fast Charging which can charge the multiple electric vehicles (EV) simultaneously. A power electronic transformer is used to connect the DC source with the medium voltage grid and provides galvanic isolation between the source and the load. The partial power DC-DC converters process only a fraction of the total battery charging power. This charging technic help in reducing the power conversion by using partial charging systems which are used for charging the EV's. The EV's battery is charged by a full bridge converter. The EV's battery operation is controlled by a controller called Fuzzy controller for getting optimistic results. A battery energy storage system is connected to the grid which can reduce the voltage stress on the Main Grid and make use of non-conventional energy sources. In BESS, bidirectional converter is used for charging and discharging operation of the battery. Due to power electronic transformer, the capital cost of the proposed charging station increases but the performance of the system is improved and the system size is reduced. PCS will improve the efficiency of the charging station. The simulation work is carried out in MATLAB.