Power sharing strategy of a series-parallel-connected EV charger

In order to meet different requirements of rechargeable batteries in Electric vehicles, a charger with hybrid structure, which designed as module and combined in series and parallel, was proposed in this paper. Each individual module uses ZCS phase-shifted full-bridge converters. And in order to ensure power sharing of each module, the outer loop power control strategy based on average current sharing method has been adopted. A combination prototype was built following the proposed strategy. Experimental results verify the correctness of the proposed scheme and the performance of power sharing system can meet the charging application.