Photovoltaic Integrated Electric Vehicles Charging stations for isolated locations

Abstract

Future mobility plans of global countries focus on replacement of IC engines operated mechanism by electrically powered systems. It aims to reduce carbon footprints, improve fuel efficiency and make vehicle systems smarter. A typical electric vehicle is an integration of battery banks, charge management systems, electric motors, power electronic converters, and control mechanisms. The battery bank maintains the supply of energy for the operation of the motor which in turn drives the transmission system of the vehicle. The vehicle battery discharges during operation and needs to be charged. In urban areas where grid supply is available, battery charging is done at utility grid connected charging stations. The interfacing charging converter causes peak demand and power quality issues of the utility grid. Charging electric vehicles in roadside locations where grid is not supplied is a rather challenging issue. Electricity generation using freely and abundantly available renewable energy sources to charge e- vehicle batteries appears to be cost-effective. In this study, photovoltaic integrated electric vehicle charging station is proposed for isolated locations. The system can supply clean, free, long-lasting pollution-free battery charging options to isolated locations. A dynamic model of 30 kW system has been developed integrating solar PV, battery storage, charge and load controller, local load of charging station. The proposed system is simulated in Matlab/Power-System Blockset and the performance of the system during steady state and load varying conditions is evaluated by the obtained simulation results. The results validate the effectiveness of the proposed system and meet the charging requirements of electric vehicle in remote locations by solar photovoltaic.