Global fault‐tolerant control approach for vector control of an induction motor.

Summary: In this research article, a global fault‐tolerant control technique (GFTC) for field‐oriented control of asynchronous (or induction) motor is addressed. It aims to present an FTC scheme that deals with the most common failures, which can alter the induction machine. Two classes of failures are treated here, machine failures such as stator winding fault and broken bars fault, and sensor failures such as current and speed sensors faults. Each failure has its own FTC system. To achieve a better design, a diagnosis algorithm based on sliding mode observers and current spectral analysis is set to detect and isolate such fault in a suitable time taking the right action to eliminate or offset the effect of this failure. This is done by providing a new threshold selection technique adopted in this work. Moreover, experimental results based on DSpace 1104 board are provided for the exploration of different scenarios showing the FTC scheme validity. [ABSTRACT FROM AUTHOR]

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