Design and Simulation of a Bidirectional On-board Charger for V2G Application

A design of on-board V2G charger was designed to meet the requirements of the V2G application. Firstly, the functions of on-board V2G charger were analyzed. Then a two-stage structure including a bidirectional AC-DC converter and a bidirectional DC-DC converter was proposed. Traditional charging mode and V2G mode were been discussed for the proposed charging system. The Dual Active Bridge topology was selected as the DC-DC converter. Moreover, the soft-switching operation over a wide output voltage range was analyzed. In the end, a 3.3 kW on-board V2G charger experimental platform was built. The experimental results demonstrated the feasibility of the proposed design and control methods.