An advanced stator winding insulation quality assessment technique for inverter-fed machines

Jinkyu Yang, Jintae Cho, Sang Bin Lee, Jiyoon Yoo

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

2 Citations (Scopus)

Abstract

Increased thermal and electrical stresses on the motor for inverter-fed machines has accelerated insulation degradation resulting in reduced insulation lifetime. This paper focuses on a new approach for monitoring the condition of the stator insulation for failure-prone inverter-fed machines. The main concept of the proposed technique is to apply a DC and/or variable frequency AC test voltage to the stator insulation using the inverter, to perform standard off-line insulation tests whenever the motor is not operating. Two approaches for testing the insulation with minimal modifications to the inverter circuit are proposed and verified experimentally. The results show that the proposed technique provides a simple low cost solution for detecting stator insulation degradation at an early stage for reliable operation of inverter-fed machine systems, since the insulation condition can be monitored frequently. This not only helps prevent forced outages and safety risks due to insulation breakdown, but also helps perform maintenance in an efficient manner since individual motor maintenance can be prioritized and scheduled based on its present condition.

Original languageEnglish
Title of host publicationConference Record of the 2006 IEEE Industry Applications Conference - Forty-First IAS Annual Meeting
Pages1562-1569
Number of pages8
DOIs
Publication statusPublished - 2006
Event2006 IEEE Industry Applications Conference - Forty-First IAS Annual Meeting - Tampa, FL, United States
Duration: 2006 Oct 82006 Oct 12

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Volume3
ISSN (Print)0197-2618

Other

Other2006 IEEE Industry Applications Conference - Forty-First IAS Annual Meeting
CountryUnited States
CityTampa, FL
Period06/10/806/10/12

Keywords

  • AC electric machines
  • Capacitance test
  • Condition monitoring
  • Diagnostics
  • Dissipation factor
  • Insulation resistance
  • Inverters
  • Predictive maintenance
  • Stator insulation

ASJC Scopus subject areas

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

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  • Cite this

    Yang, J., Cho, J., Lee, S. B., & Yoo, J. (2006). An advanced stator winding insulation quality assessment technique for inverter-fed machines. In Conference Record of the 2006 IEEE Industry Applications Conference - Forty-First IAS Annual Meeting (pp. 1562-1569). [4025424] (Conference Record - IAS Annual Meeting (IEEE Industry Applications Society); Vol. 3). https://doi.org/10.1109/IAS.2006.256737