Reliable Flux based Detection of Rotor Cage Faults in Induction Motors

Sang Bin Lee, Jaehoon Shin, Yonghyun Park, Heonyoung Kim, Jongwan Kim

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

Abstract

Although MCSA is widely applied in the field for remote, on-line detection of rotor cage faults in induction motors, many cases of false positive or negative indications leading to unnecessary inspection or forced outages are common. It was shown that alternative off-line or starting transient tests are immune to some of the false indications; however, a "reliable"method capable of detecting the fault "on-line"is needed. In this paper, a new fault indicator that can be extracted from the stray or airgap flux that can provide reliable, on-line detection is proposed. The 5th harmonic sideband of the rotor speed frequency is proposed as a reliable indicator of rotor faults that is immune to the most common false MCSA indications due to axial ducts, load torque oscillations, and non-adjacent broken bars. Test results are given to verify that the proposed fault indicator in the stray or airgap flux provides reliable detection of rotor faults for cases where MCSA fails. The proposed fault indicator is also shown to be immune to common mechanical faults such as airgap eccentricity, unbalance, or misalignment.

Original languageEnglish
Title of host publication2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages160-166
Number of pages7
ISBN (Electronic)9781728192970
DOIs
Publication statusPublished - 2021
Event13th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021 - Dallas, United States
Duration: 2021 Aug 222021 Aug 25

Publication series

Name2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021

Conference

Conference13th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021
Country/TerritoryUnited States
CityDallas
Period21/8/2221/8/25

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

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