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A simplified technique for detecting mechanical faults using stator current in small induction motors
Conference proceeding

A simplified technique for detecting mechanical faults using stator current in small induction motors

R.R. Obaid, T.G. Habetler, D.J. Gritter and IEEE
Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), Vol.1, pp.479-483 vol.1
2000
DOI: https://doi.org/10.1109/IAS.2000.881153

Abstract

Digital filters Electrical fault detection Fault detection Frequency Induction machines Induction motors Power harmonic filters Shafts Spectral analysis Stators
This paper shows that mechanical faults in small induction machines can be detected with adequate sensitivity by merely monitoring the RMS value of the stator current over a certain frequency range. Furthermore, a simple technique for mechanical fault detection using stator current is presented for the case wherein spectral monitoring is necessary. Experimental results for different types of mechanical faults, namely, rotor unbalances and shaft misalignments, are shown.

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