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Effects of the Slot Harmonics on the Stator Current in an Induction Motor with Bearing Fault

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  • Xiangjin Song
  • Jingtao Hu
  • Hongyu Zhu
  • Jilong Zhang

Abstract

Bearing faults are the most frequent faults of induction motors. The current spectrum analysis is an easy and popular method for the monitoring and detection of bearing faults. After a presentation of the existing fault models, this paper illustrates an analytical approach to evaluate the effects of the slot harmonics on the stator current in an induction motor with bearing fault. Simple and clear theoretical analysis results in some new current characteristic frequencies. Experimental tests with artificial bearing outer raceway fault are carried out by measuring stator current signals. The experimental results by spectral analysis of the stator current agree well with the theoretical inference.

Suggested Citation

  • Xiangjin Song & Jingtao Hu & Hongyu Zhu & Jilong Zhang, 2017. "Effects of the Slot Harmonics on the Stator Current in an Induction Motor with Bearing Fault," Mathematical Problems in Engineering, Hindawi, vol. 2017, pages 1-11, April.
    • Handle: RePEc:hin:jnlmpe:2640796
    DOI: 10.1155/2017/2640796
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