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Condition monitoring techniques for induction motors

Induction motors are used in various work environment and critical industrial processes, operating conditions and well-being of these machines need to be monitored to avoid potential failures. In this paper, an extensive literature review is conducted for condition monitoring techniques for induction motors. Various state-of-art techniques are presented and summarized under three categories: 1) signature extraction based approach, 2) model-based approach, and 3) knowledge-based approach. Advantages and drawbacks of several commonly used methods are demonstrated. Although research has been conducted in this area for several decades, condition monitoring and fault diagnosis of induction motors remains an active research area, especially recent emerging transition from traditional techniques to knowledge-based approach using artificial intelligent, which opens a pathway to an exciting new research direction.