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January 1, 1994

On-line current monitoring to detect electrical and mechanical faults in three-phase induction motor drives

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Authors

WTWilliam T. ThomsonWesleyan University

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Implication

Diagnostic evaluation demonstrates electrical and mechanical fault detection via online current spectrum analysis in induction drives, highlighting opportunities for preventive maintenance.

Key Points

  • Determine whether online spectrum analysis of stator current can detect incipient electrical and mechanical faults in operating three-phase induction motor drive systems.
  • Applied online spectrum analysis to monitor the electrical current of three-phase induction motor drives during service.
  • Tracked spectral signatures associated with common electrical faults and mechanical drive-train degradation.
  • Detected electrical failure mechanisms in operating motors, specifically broken rotor bars and dynamic eccentricity.
  • Identified purely mechanical faults from current signatures alone, including rotor misalignment and worn pump components.

Cite This Study

William T. Thomson (1994) studied this question.

synapsesocial.com/papers/6a10cc4149545a83bbee649dhttps://doi.org/10.1049/cp:19941096
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Also Consider

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  1. 1On-line current monitoring to diagnose airgap eccentricity in large three-phase induction motors-industrial case histories verify the predictions1999 · 147 citations
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