Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors

Yonghyun Park, Hanchun Choi, Sang Bin Lee, Konstantinos Gyftakis

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

2 Citations (Scopus)

Abstract

Detection of rotor cage faults in induction motors based on motor current signature analysis (MCSA) is being extensively applied in the field for preventing forced outage of the motor and industrial process. Although MCSA is very effective for detecting broken bars that are adjacent to each other, it can fail if the broken bars are non-adjacent, which is common for applications with frequent starts. If multiple broken bars are spread out at locations where the rotor "electrical" asymmetry is canceled, the presence of broken bars is difficult to detect with MCSA. A false indication can lead to a catastrophic forced outage, but the only known means of detecting this type of fault in the field is through rotor visual inspection. In this paper, the feasibility of detecting non-adjacent broken rotor bars from the rotor rotational frequency sideband components in the internal and external flux measurements during steady state and motor starting is evaluated. Experimental testing on a 7.5 hp induction motor shows that non-adjacent broken bars can be reliably detected from the analysis of flux measurements for cases where MCSA and all other electrical tests fail.

Original languageEnglish
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages7019-7026
Number of pages8
ISBN (Electronic)9781728103952
DOIs
Publication statusPublished - 2019 Sep
Event11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
Duration: 2019 Sep 292019 Oct 3

Publication series

Name2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
CountryUnited States
CityBaltimore
Period19/9/2919/10/3

Keywords

  • Airgap Flux
  • Fault Diagnostics
  • Induction Motor
  • Off-line Testing
  • Search Coil
  • Spectral Analysis
  • Squirrel Cage Rotor
  • Starting Transient
  • Stray Flux

ASJC Scopus subject areas

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

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  • Cite this

    Park, Y., Choi, H., Lee, S. B., & Gyftakis, K. (2019). Flux-based detection of non-adjacent rotor bar damage in squirrel cage induction motors. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 7019-7026). [8912859] (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912859