A New Configuration of Switch and Source Fault-Tolerant Dual-Input Single-Output DC-DC Converter

Enhancing the reliability of Multi-input converters (MICs) with fault tolerance plays an important role while integrating with independent energy sources with any significant loads. In literature, many MICs are proposed and operated on the time-multiplexing concept. Only one energy source contributes to the loads, and others are idle during a particular duty interval. This leads to the underutilization of the converter as well as the input energy sources. A new configuration of Dual-Input and Single Output (DISO) DC-DC converter with switch and source fault tolerance has been proposed in the proposed work. The fault tolerance is the open-circuit condition due to the power switch fault and against one input short-circuit. The designed converter can deliver the buck, boost, and buck-boost operations. The feasibility of the proposed scheme, a 200W prototype is designed, and experimental results are used for validation.