Electric Vehicle is being used more widely. Aiming at the demands of the high- power DC/DC convertor for fuel cell electric vehicle. In this paper, a novel three-level forward-flyback DC/DC converter is proposed for wide input voltage range and high transform power. With the development of high-tech, the performances of the switching devices are also gradually improved because of the high frequency. Zero-voltage-switching performance of the lagging-legs at a wide load range condition can be provided because of the soft-switching auxiliary circuit. Switching losses, transformation efficiency and the costs of Electric Vehicle are greatly improved.
