A Soft-Switched Wide-Ratio Bidirectional Hybrid Switched-Inductor Converter using Auxiliary Resonant Commutated Poles

This paper presents a Bidirectional Hybrid Switched Inductor DC-DC converter improved with Auxiliary Resonant Commutated Poles (ARCP-BHSI). The classical hard switched BHSI converter achieves better overall performances compared to other state-of-the-art converters in terms of wide voltage conversion ratio, stress on the switching devices, and passive components size. Because it can be constructed with half bridges, the ARCP can be easily implemented into BHSI in order to help achieve soft switching and reduce dv/dt on the switching nodes. The BHSI is initially compared to other topologies made with half-bridge modules highlighting its performances. The operation of the ARCP-BHSI is presented, analyzed and simulated, showing the efficiency improvements in comparison to the hard switched BHSI.