PV fed Electric Vehicle Charging Station with Power Backup

Abstract

This paper puts forth a solar fed Level II electric vehicle charging station with power backup. It consists of three single phase ac outlets to charge EVs. It supports the growing EV charging station market in the context of global warming concerns caused by the conventional IC engines. Solar energy is used to power the charging station as it is a promising pollution-free renewable energy solution. Maximum power is extracted from the PV array using MPPT technique. In order to overcome the issue of intermittency of solar power, a backup battery is also incorporated in the system. A bidirectional converter is used to allow the bidirectional power flow for the charging and discharging of the backup battery. The complete design of the charging station is also described in this paper. The proposed system has been validated by extensive simulation studies in the MATLAB/Simulink environment.