ZVT Interleaved Boost Converter for Fuel Cell Electric Vehicles using Single Resonant Inductor of Soft Switching Cell for High Power Density

This paper proposes ZVT interleaved boost converter using single resonant inductor of soft switching cell for high power density. By applying a proposed structure to the interleaved boost converter, the power density of the fuel cell dc-dc converter (FDC) could be improved. To verify the feasibility of the proposed converter, the 5 kW prototype FDC is implemented, and the volume of passive components that significantly affect power density can be reduced by up to 35.5% compared to the conventional boost converter. Moreover, when the proposed converter is applied, it is confirmed that it is advantageous in terms of the system efficiency through loss analysis and experimental results.