Impulse Voltage-based Test Method for Identifying the Stator Insulation Component with PD Activity for Low Voltage AC Motors

Sang Bin Lee, Alireza Naeini, Shesha Jayaram, Greg C. Stone, Mladen Sasic

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

Abstract

IEC 60034-18-41 has been developed as a standard acceptance test to ensure partial discharge (PD)-free operation for improving the reliability of low voltage (LV) variable frequency drive (VFD) motors. Although the test can verify whether PD exists in the stator for a voltage surge with predetermined magnitude and risetime, the information on where PD activity is occurring in the stator insulation is not clearly given. In this paper, a method based on variable risetime surge voltage testing is proposed for identifying the component of the stator insulation system where PD occurs in LV random wound motor stators (turn, phase, or ground insulation). This information can be used for increasing the PD inception voltage for improving the reliability of the motor through insulation system design/manufacturing. The test is implemented with a 4.5 kV variable risetime surge generator prototype. 4 LV ac motors are tested to show where PD is likely to occur in commercial LV motors.

Original languageEnglish
Title of host publication2019 IEEE Electrical Insulation Conference, EIC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages392-395
Number of pages4
ISBN (Electronic)9781538676240
DOIs
Publication statusPublished - 2019 Jun
Event2019 IEEE Electrical Insulation Conference, EIC 2019 - Calgary, Canada
Duration: 2019 Jun 162019 Jun 19

Publication series

Name2019 IEEE Electrical Insulation Conference, EIC 2019

Conference

Conference2019 IEEE Electrical Insulation Conference, EIC 2019
CountryCanada
CityCalgary
Period19/6/1619/6/19

Keywords

  • impulse testing
  • partial discharge (PD)
  • surges

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ceramics and Composites
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Polymers and Plastics
  • Surfaces, Coatings and Films

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    Lee, S. B., Naeini, A., Jayaram, S., Stone, G. C., & Sasic, M. (2019). Impulse Voltage-based Test Method for Identifying the Stator Insulation Component with PD Activity for Low Voltage AC Motors. In 2019 IEEE Electrical Insulation Conference, EIC 2019 (pp. 392-395). [9046584] (2019 IEEE Electrical Insulation Conference, EIC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EIC43217.2019.9046584