Detection of Inter-Turn Stator Faults in Induction Motors Using Short-Term Averaging of Forward and Backward Rotating Stator Current Phasors for Fast Prognostics
- Publication Type:
- Journal Article
- IEEE Transactions on Magnetics, 2017, 53 (11)
- Issue Date:
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© 2017 IEEE. Stator-related failures in induction machines are often encountered in industrial applications due to the unforeseen insulation damage. This paper addresses the fast prognosis of inter-turn faults. It presents simulation and measurement of the stator winding short circuit faults of a three-phase induction motor. A 50 Hz four-pole 2 hp induction motor was operated under healthy and faulty conditions and the increase in backward sequence current component assessed. It was found that the negative sequence component is a powerful component for the detection of inter-turn faults and simple algorithms allow it to be monitored and faults detected.
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