| Summary: | Multilevel inverters are used in a number of high-power applications, including industrial motor drives, flexible power transmission, and, renewable energy systems. Since the MLI design incorporates a large number of devices, the system’s reliability suffers. This has caught the interest of academics all over the world, who are searching for methods to increase the dependability of the MLI design and include fault-tolerant qualities into it, either through software or hardware. Redundancy is a method that has recently gained popularity in solid-state transformer applications where fault tolerance is a highly desired quality. This is because the method provides for greater fault tolerance. The goal of this research is to offer a complete knowledge of the fault tolerance capabilities of MLIs created by the research community over the last few years
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