Wind Energy based EV Charging Station along with Power Quality Enhancement

Currently electric vehicle (EV) charging is done mostly using the grid. As the number of EVs will increase it can have various harmful impact on the grid. To reduce dependency on grid, a wind energy based EV charging station has been proposed in this paper. A 2.5 kW self-excited squirrel cage induction generator (SCIG) based wind system is proposed for the EV charging. The output of the SCIG is rectified using diode bridge rectifier and then fed into a boost DC-DC converter. The dc link capacitor across the boost converter is connected to a bidirectional DC-DC converter for charging the EV battery. The bidirectional converter supports both charging/discharging of the battery. In addition a three phase voltage source converter (VSC) is connected to the grid. This VSC acts as a shunt power active filter used for compensating the harmonic components present in the current waveform due to the non-linear loads connected to the grid. The performance of the proposed system is tested through the simulations carried out in MATLAB for various wind speeds and also in the absence of the wind.