Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors

Jongman Hong, Doosoo Hyun, Tae June Kang, Sang Bin Lee, Christian Kral, Anton Haumer

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

7 Citations (Scopus)

Abstract

Condition monitoring of rotor problems such as demagnetization and eccentricity in permanent magnet synchronous motors (PMSM) is essential for guaranteeing high motor performance, efficiency, and reliability. However, there are many limitations to the off-line and on-line methods currently used for PMSM rotor quality assessment. In this paper, an inverter-embedded technique for automated detection and classification of PMSM rotor faults is proposed as an alternative. The main concept is to use the inverter to perform a test whenever the motor is stopped, to detect rotor faults independent of operating conditions or load torque oscillations, which is not possible with motor current signature analysis (MCSA). The d-axis is excited with a dc+ac signal, and the variation in the inductance pattern due to the change in the degree of magnetic saturation caused by demagnetization or eccentricity is observed for fault detection. An experimental study on a 7.5kW PMSM verifies that demagnetization and eccentricity can be detected and classified independent of the load with high sensitivity.

Original languageEnglish
Title of host publicationIEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings
Pages2512-2519
Number of pages8
DOIs
Publication statusPublished - 2011 Nov 28
Event3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011 - Phoenix, AZ, United States
Duration: 2011 Sep 172011 Sep 22

Other

Other3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
CountryUnited States
CityPhoenix, AZ
Period11/9/1711/9/22

Keywords

  • AC Machine
  • Condition Monitoring
  • d-axis Inductance
  • Demagnetization
  • Eccentricity
  • Magnetic Saturation
  • Permanent Magnet (PM)
  • Synchronous Motor (SM)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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  • Cite this

    Hong, J., Hyun, D., Kang, T. J., Lee, S. B., Kral, C., & Haumer, A. (2011). Detection and classification of rotor demagnetization and eccentricity faults for PM synchronous motors. In IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings (pp. 2512-2519). [6064103] https://doi.org/10.1109/ECCE.2011.6064103