Current-Fed Bidirectional Isolated DC/DC Converters for Hybrid Energy System

High-frequency isolated transformer DC/DC topologies are usually preferred in high current low voltage input application, such as energy storage system and voltage generation through PV cell or fuel cell. Current-fed converter topology is more suitable for such applications that require high conversion gain especially in fuel-cell system. This paper presents the comparison of selected four current-fed converter topologies. The comparison is carried out based on the components rating, components selection, losses and efficiency.