A Modular Single-Phase Bidirectional EV Charger with Current Sharing Optimization

Developing electric vehicle (EV) technologies puts EV chargers in scope for successful integration into the smart grid. The energy and power need for grid charging of EV batteries may have an adverse impact on the distribution grid depending on the architecture of the distribution system and charging control structure employed. This effect can be minimized utilizing on-board EV battery chargers. For the wide-scale adoption of EV, an improvement in the charging operation of the batteries will have a large cumulative impact on the grid. Therefore, this paper presents a bidirectional modular single-phase on-board charger with optimized current sharing for more efficient smart grid integration. The results of the implementation have been presented to verify the proposed idea in simulation and experimental test environments.