An on-line groundwall and phase to phase insulation quality assessment technique for AC machine stator windings

Sang Bin Lee, Jinkyu Yang, Karim Younsi, Raj Bharadwaj

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An on-line technique for monitoring the condition of groundwall (GW) and phase-to-phase (PP) insulation for 3 phase AC machine stator windings is proposed in this paper. Insulation condition indicators such as capacitance, dissipation factor (tanδ), and AC insulation resistance are calculated on-line based on the differential leakage current measurements for each phase. A model for a 3 phase AC machine insulation system is derived and analyzed for both off-line and on-line testing. Guidelines for interpreting the measured indicators for determining the 1) overall condition and 2) significant degradation for the individual GW and PP insulation for each phase of the stator are given based on the analysis. Experimental results on a 15hp induction motor under intentional GW and PP insulation degradation conditions show that incipient insulation degradation can be detected and classified with high sensitivity.

Original languageEnglish
Title of host publicationConference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
Pages10-19
Number of pages10
DOIs
Publication statusPublished - 2005
Event2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting - Kowloon, Hong Kong, China
Duration: 2005 Oct 22005 Oct 6

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Volume1
ISSN (Print)0197-2618

Other

Other2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
CountryChina
CityKowloon, Hong Kong
Period05/10/205/10/6

Keywords

  • AC machines
  • Capacitance
  • Dissipation factor
  • Fault diagnosis
  • Groundwall insulation
  • Insulation resistance
  • Insulation testing
  • On-line condition monitoring
  • Phase to phase insulation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Lee, S. B., Yang, J., Younsi, K., & Bharadwaj, R. (2005). An on-line groundwall and phase to phase insulation quality assessment technique for AC machine stator windings. In Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting (pp. 10-19). [1518285] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society); Vol. 1). https://doi.org/10.1109/IAS.2005.1518285