Design and Simulate an Off-Grid PV System with a Battery Bank for EV Charging

This paper presents the control and design of a stand-alone photovoltaic (PV) system with a battery bank for an electric vehicle (EV) battery charging. It also describes the necessary requirements and power electronic converters design for the EV battery charging station. The design of a bidirectional converter to allow for bidirectional power flow control to regulate the charging and discharging of the battery bank is presented. The PV system connected to the battery bank system is used to enhance the power output of renewable energy sources, regulate electrical power to effectively charge batteries, draw maximum power from solar panels, and provide a high-quality DC output for electric vehicle charging. The PV is the primary power source of the system, and a battery bank is used as a backup storage system. A comparison between the performance both of lithium-ion batteries and lead-acid batteries based on using it as a backup storage system for the off-grid PV system is presented. The proposed system has been designed and simulated in the MATLAB-Simulink environment. The effective performance of the proposed station for EV battery charging is achieved through the simulation results. A proposed charging station cost estimation is performed to present a powerful index of the proposed charging station's effectiveness.