Integration of Solar PV-WECS and DG Set for EV Charging Station

Abstract

Renewable energy sources powered charging station (CS) is necessary for the sustainability of electric vehicle (EV). Therefore, this paper uses photovoltaic (PV) array and wind energy conversion system (WECS) as main energy sources for the EV charging station. Moreover, diesel generator (DG) set and grid power are also used as back-up power providing the continuous power to the EV. The charging station, has the provision to power the local house hold loads using PV array and WECS energy in islanded and grid or DG set connected modes. While charging EV and feeding household loads, the charging station compensates for the local reactive power and harmonics current demand for achieving unity power factor (UPF) operation of the grid or a DG set. In addition, various other complementary features of the charging station such as a vehicle to home, vehicle to grid, harmonics elimination, vehicle to grid reactive power compensation, and synchronization capability are considered in this work. Prototype of the proposed charging station is developed in the laboratory and steady state as well as dynamic test results are discussed in detail.