Optimization considerations for interleaved DC-DC converters for EV battery charging applications, in terms of partial load efficiency and power density

This paper proposes a novel control strategy for multiphase interleaved dc-dc converters for EV battery charging applications. The proposed control strategy allows to adapt the number of active phases and the switching frequency according to the output power. This strategy results to an increased partial load efficiency and current handling capability of the semiconductors while the size of the semiconductor, the magnetic components and the cooling system size is reduced. An experimental validation of the proposed method is presented.