Stator insulation quality assurance testing for appliance motors with aluminum windings

Daewoong Choi, Tae June Kang, Sang Bin Lee, Jaegyu Kim, Jihoon Kim

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

Abstract

A number of appliance manufacturers have recently replaced the motor stator winding material from copper (Cu) to aluminum (At) to reduce the product cost in the competitive global appliance market. Although reduction in the motor cost could be achieved, a noticeable increase in the failure rate due to stator insulation breakdown was observed. In this paper, increased failures in At winding stator insulation is investigated for 230 V, 50 W single phase induction fan motors used in the outdoor unit of air conditioners (A/C). Since the motors with defects or failures could not be screened out with the quality assurance tests (QA) that were applied to Cu winding motors, new QA test methods are evaluated for screening out the units with high risk of failure. The investigation shows that partial discharge (PD) measurement under surge excitation can serve as an effective means of screening out the units that are likely to fail. The claims made in the paper are verified through comparative experimental surge PD testing on At and Cu winding motors before and after accelerated degradation.

Original languageEnglish
Title of host publicationECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509007370
DOIs
Publication statusPublished - 2017 Feb 13
Event2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States
Duration: 2016 Sep 182016 Sep 22

Other

Other2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
CountryUnited States
CityMilwaukee
Period16/9/1816/9/22

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Control and Optimization

Fingerprint Dive into the research topics of 'Stator insulation quality assurance testing for appliance motors with aluminum windings'. Together they form a unique fingerprint.

  • Cite this

    Choi, D., Kang, T. J., Lee, S. B., Kim, J., & Kim, J. (2017). Stator insulation quality assurance testing for appliance motors with aluminum windings. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings [7855465] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2016.7855465