A Novel DC/DC Three Port Converter with Fault-Tolerant Ability

Abstract

This article proposes a novel three-port converter with a fault-tolerant (FT) capability to reconFigure automatically under different switching fault conditions, i.e., open circuit fault (OCF) or short circuit fault (SCF) of the power transistors, and to continue achieving different control objectives such as effective battery charging, maximum power point tracking (MPPT) and output voltage regulation. The proposed fault-tolerant design with a one-level redundancy structure enhances the reliability of traditional three port converters (TPCs), but it also addresses the component failure while different modes of operations using fewer components by incorporating dual-input single-inductor structure into the converter design. Simulation results are presented to explain the performance of the proposed converter during different fault conditions and the reconfiguration mechanism during these conditions.