Abstract
This paper describes a fault-tolerant control system for a high performance induction motor drive.A new fault-tolerant scheme using three microprocessor-based controllers is presented. In the proposed scheme, two of the three processors always compare the results of their computations with each other in order to detect a fault, and when a fault is detected, the third processor is used to locate it. By this, the proposed scheme guarantees high reliability and provides the flexibility for the utilization of redundancies. Through the comparison of the estimated reliability, it is verified that the proposed scheme gives higher reliability than the TMR (Triple Modular Redundancy) to the control system for the induction motor drive.
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