Detection and Classification of Damper Bar and Field Winding Faults in Salient Pole Synchronous Motors

Y. Park, S. B. Lee, J. Yun, M. Sasic, G. C. Stone

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

Abstract

Recent cases of broken damper bars and shorted field winding turns in synchronous motors (SM) have shown that rotor faults can degrade motor performance and lead to a forced outage of the motor and driven process. However, detection of SM rotor faults has not received much attention since SMs are not as common as induction motors. Detection of SM rotor faults is difficult, as the damper bar is active only under the starting or load transients, and shorted field winding turns result only in a slight increase in rotating asymmetry. SM rotor fault testing in the field mainly relies on visual inspection or off-line tests, and new test methods that can provide reliable detection of the faults without motor disassembly is highly desirable. In this paper, new test methods for not only detecting, but also classifying the two types of SM rotor faults under motor standstill and starting are proposed. An experimental study on a 30 kW salient pole SM is provided to verify the proposed methods. It is shown that damper and field winding faults can be detected and classified with high sensitivity and reliability compared to conventional tests.

Original languageEnglish
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4491-4498
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
  • Damper Bar
  • Fault Diagnostics
  • Field Winding
  • Off-line Testing
  • Salient Pole Synchronous Motor
  • Search Coil
  • Spectral Analysis
  • Starting Transient

ASJC Scopus subject areas

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

Cite this

Park, Y., Lee, S. B., Yun, J., Sasic, M., & Stone, G. C. (2019). Detection and Classification of Damper Bar and Field Winding Faults in Salient Pole Synchronous Motors. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 4491-4498). [8911843] (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8911843