A Fault Tolerant Strategy Based on Model Predictive Control for Full Bidirectional Switches Indirect Matrix Converter

Abstract

This paper proposes an open-switch fault tolerant strategy based on the model predictive control for a full bidirectional switches indirect matrix converter (FBS-IMC). Compared to the conventional IMC, the FBS-IMC can provide healthy current path when the open-switch fault is occurred. To keep the continuous operation, the fault tolerant strategy is developed by means of reversing the DC link voltage polarity regardless of the faulty switch location in the rectifier or inverter stages. Therefore, the proposed fault tolerant strategy can maintain the same input and output performances during the faulty condition as the normal condition. The simulation results are given to verify the effectiveness of the proposed strategy.