Condition monitoring of stator windings in induction motors: Part I - Experimental investigation of the effective negative-sequence impedance detector

Jeffery L. Kohler, Joseph Sottile, Frederick C. Trutt

Research output: Contribution to journalArticle

88 Scopus citations


Twenty-five years ago, the former U.S. Bureau of Mines funded a research project aimed at developing the enabling technology for incipient failure prediction in electric power system components as a means of reducing the injuries and fatalities that sometimes occur when equipment malfunctions. Over the ensuing years, interest in this has waxed and waned, but recently interest has been growing for both civilian and military applications. This paper addresses the level of turn-to-turn insulation deterioration that can be resolved using an online monitoring technique based upon an effective negative-sequence impedance detector. The detection of turn-to-turn defects is especially important because they are believed to represent the beginning stage of most motor winding failures.

Original languageEnglish (US)
Pages (from-to)1447-1453
Number of pages7
JournalIEEE Transactions on Industry Applications
Issue number5
StatePublished - Sep 1 2002


All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Engineering (miscellaneous)

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