Reliability evaluation of a novel fault tolerant multilevel inverter with reduced components

Abstract Safety–critical applications rely heavily on multilevel inverters. This article introduces a fault tolerant (FT) inverter sustaining an uninterrupted operation with open switch occurred in single and multiple power switches. Power semiconductor devices used dc-ac converters increased numbers to obtain high-quality voltage waveform which makes them vulnerable failure. As result, reliability is one of the biggest challenges utilization inverters (MLIs) many industrial applications. At same time, reduced component can achieve highest resolution output by compromising significant features (such as tolerance ability, charge balance control, etc.) but it required be preserved. For effective MLIs, redundant switching states have given priority terms level failures. A study being undertaken develop novel fault-tolerant MLI, event circuit Therefore, proposed FT-MLI structure fulfill operational requirement for time claimed components. valid technique along appropriate clearance employed desirable waveforms. In order determine feasibility FT-MLI, performance evaluations are carried out based results obtained under normal abnormal operating conditions through use laboratory prototype.