Implementation of Solar PV-Battery and Diesel Generator Based Electric Vehicle Charging Station

The proposed charging station is primarily designed to use the solar photovoltaic (PV) array and a storage battery energy to charge the electric vehicle (EV) battery. However, in case of exhaust of storage battery and unavailable solar PV generation, the charging station intelligently takes power from the grid and DG (Diesel Generator) set. However, the power from DG set is drawn in a manner that, it always operates at 80-85% loading to achieve maximum fuel efficiency under all loading conditions. However, in coordination with the storage battery, the charging station regulates the generator voltage and frequency without a mechanical speed governor. It also ensures that the power drawn from the grid or the DG set is at unity power factor (UPF) even at nonlinear loading. Moreover, the PCC (Point of Common Coupling) voltage is synchronized to the grid/generator voltage to obtain the ceaseless charging.