Bidirectional Electric Vehicle Charger for G2V and V2G Mode of Operation

This work describes an enhanced bidirectional electric vehicle (EV) charging system that functions in grid-to-vehicle (G2V) and vehicle-to-grid (V2G) modes. The system, implemented using MATLAB/Simulink, combines power electronic devices, DC-DC converters, and controllers, and the prototype is integrated using rectifiers, inverters, and a Battery Management System (BMS) with relay-controlled operation for avoiding deep discharge of the battery. Simulation outcomes prove successful operation in G2V and V2G modes, indicating battery charging and discharging with controlled current and voltage parameters and grid and inverter voltage. The hardware prototype confirms the system's ability to charge and discharge the battery to a load efficiently. This research helps make EVs more eco-friendly by lessening the grid demand for peak hours, with prospects for revenues from V2G operations. The designed system provides a viable solution to increase EV infrastructure, decrease costs, and facilitate sustainable energy habits. Index Terms – Electric vehicle charging, Vehicle-Grid, Grid-Vehicle, Buck-Boost Converter, and IDC-IAC/IAC-IDC Converter