Modeling of Off-Board Solar Powered High Efficient Charging Station For Electric Vehicles

Now a days Electric Vehicles (EVs) plays a very vital role for sustaining a clean environment and also have the tremendous potential to wipe off the fossil fuel based engine from the recent market. The most challenging part is to provide the reliable charging solutions. Charging solutions must evolve to be grid-less in order to enable EVs global acceptance. This will boost the confidence of end-users to accept EVs. In addition to urban areas, the need for gridless charging solutions is more significant in remote areas. The ultimate goal of this paper is to illustrate the design and simulation of an optimized solar-powered off-grid charging station. In this design, a traditional P&O based MPPT algorithm is used for tracking the maximum power of the Photo voltaic (PV) system. A buck converter topology is used for a charge controller that regulates the voltage as per the requirement to charge the EVs battery of 48 V, 150 Ah. A three-stage charging methodology has been used for improving the overall charging efficiency up to 98.28% with a state of charge (SOC) 80.04% for continuous charging of the proposed system and also minimizes the charging time of 1 hr.