Interleaved Boost Converter with Coupled Inductor - Theory and Application

Miriam Jarabicova, Slavomir Kascak, Michal Prazenica

This paper describe the analysis of interleaved boost DC-DC converter with a coupled inductor on the same magnetic core. The advantage of the coupled inductor over the non-coupled case is investigated. The current ripple equations as an input current for the boost operation mode and the ripple current in individual phase of the interleaved converter using coupled inductor are explained analytically, supported by simulation and experimental results. The novelty of the paper is an investigation of current ripples of interleaved boost converter operated over 50 % of duty ratio and utilization of the converter in the application of electric drive vehicle.