Proposed Open-Circuit Faults Detection Using Control Charts Technique

This manuscript introduces a real-time fault detection technique based on statistical exponentially weighted moving average (EWMA) control charts for detecting power switch open circuit faults in inverter feeding induction motor drives. The proposed algorithm is able to detect simultaneously double and triple switches open circuit faults, besides single open circuit faults. The proposed technique is suitable for open/closed loop control systems and sensor/sensorless control configurations. Several Digital Signal Processor-based experimental works are conducted to evaluate the accuracy of the introduced detection technique concerning different operating conditions. The results provide evidence of the effectiveness and fast detection with no false alarms of the proposed technique.