Electric vehicle battery charging method using drive inverter and half-bridge

In general, on-board chargers (OBCs) are used to charge the battery of electric vehicles(EVs). However, the OBC has disadvantages such as cost and increase in weight of EVs which can make worse the driving efficiency. This paper proposes an integrated battery charging module by utilizing a three-phase inverter for driving, inductance of the motor and additional half-bridge circuit. In addition, the switching pattern of the proposed module are derived according to the output voltage during charging the battery. A current control method is proposed which can perform maximum effective power control and position control simultaneously. Finally, the proposed module and current control method are validated through simulations and experiments.