DAB based advanced EV Charging System for V2G Mode Operation

The rising demand for renewable energy and energy storage facilities, driven by the depletion of conventional energy sources, underscores the importance of projects aimed at integrating plug-in electric vehicles (PEVs) as energy storage systems. This project facilitates energy storage by charging PEV batteries during low-demand hours and supplying power back to the grid during peak-demand hours. When connected to an electrical grid, PEVs can operate in two different modes: Grid-to-Vehicle (G2V) mode and Vehicle-to-Grid (V2G) mode. In G2V mode, the vehicle’s battery is charged from the grid, while in V2G mode, the battery supplies power back to the grid. This paper presents the design and analysis of a DAB-based advanced charging system for V2G mode operation. A PEV charging control scheme with bidirectional power flow capability is developed using a proportional-integral (PI) controller. This proposed control strategy is tested in a system model comprising an electrical grid, bidirectional converters, filters, and lithium-ion batteries. The designed system model is simulated in MATLAB/Simulink, and the controller’s performance in both operating modes is evaluated and validated.