Due to the robust structure, low price, and supply maturity, induction machine (IM) drive systems are widely used in industrial applications, e.g., electric aircraft, railways, wind turbines, etc. Accordingly, safety is a crucial problem and the reliability of the IM drive system is in high demand. In this presentation, two techniques that can enhance the operational reliability of the power converters in the IM drives will be presented. Firstly, the “fault diagnosis + fault tolerance” scheme will be introduced, which can ensure continuous operation after the catastrophic failure of the power converter. Then, the “lifetime prediction” scheme that can prevent degradation failure will be discussed.

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