New single-stage EV charger for V2H applications

Recently, electric vehicle (EV) chargers with their batteries have been developed for vehicle-to-home (V2H) applications, acting as a backup generation to supply emergency power directly to a home. Traditional EV charger in V2H applications mainly consists of DC/DC and DC/AC stages, which complicate the control algorithm and result in low conversion efficiency. In order to solve the problem, a novel EV charger is proposed for V2H applications. It can boost the battery voltage and output AC voltage with only one-stage power conversion. Also, the DC, 1-phase and 3-phase loads can be fed with the proposed single-stage EV charger. The system control strategy is also provided to deal with versatile load variations. Finally, the performance evaluation results verify the effectiveness of the proposed solution.