Electrical Monitoring of Damper Bar Condition in Salient Pole Synchronous Motors without Motor Disassembly

Jose Antonino-Daviu, Vicente Fuster-Roig, Sangwook Park, Yonghyun Park, Hanchun Choi, Jongsan Park, Sang Bin Lee

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

1 Citation (Scopus)

Abstract

The damper (or amortisseur) winding of synchronous motors (SM) is a critical component required for starting the motor. Several cases of forced outage of industrial processes due to starting failure of salient pole SMs caused by damper bar damage have recently been reported. Detection of damper bar failure is difficult since they are active only during motor starting, and testing in the field currently relies on off-line visual inspection. It was recently shown that broken damper bars can be detected from the airgap flux, but this requires installation of airgap flux sensors inside the motor. In this paper, a method based on analysis of the stator starting current is proposed for detecting broken damper bars. In addition, an electrical detection method based on signal injection from the motor terminals is proposed. The new methods have been devised to provide remote testing from the motor control center without motor disassembly required in existing tests. Experimental testing performed on a 30 kW salient pole SM prototype with emulated broken bars shows that the proposed methods can provide sensitive and reliable detection of damper bar failures.

Original languageEnglish
Title of host publicationProceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages62-68
Number of pages7
ISBN (Electronic)9781728118321
DOIs
Publication statusPublished - 2019 Aug
Event12th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019 - Toulouse, France
Duration: 2019 Aug 272019 Aug 30

Publication series

NameProceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019

Conference

Conference12th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019
CountryFrance
CityToulouse
Period19/8/2719/8/30

Keywords

  • Condition Monitoring
  • Fault Diagnostics
  • Motor Testing
  • Salient Pole Synchronous Motor
  • Spectral Analysis

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Antonino-Daviu, J., Fuster-Roig, V., Park, S., Park, Y., Choi, H., Park, J., & Lee, S. B. (2019). Electrical Monitoring of Damper Bar Condition in Salient Pole Synchronous Motors without Motor Disassembly. In Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019 (pp. 62-68). [8864860] (Proceedings of the 2019 IEEE 12th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/DEMPED.2019.8864860