Detection of demagnetization in permanent magnet synchronous machines using hall-effect sensors

David Reigosa, Daniel Fernández, Yonghyun Park, Alberto B. Diez, Sang Bin Lee, Fernando Briz

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

6 Citations (Scopus)

Abstract

Torque production capability of permanent magnet synchronous machines (PMSMs) depends on the magnetization state of the permanent magnets (PMs). Electrical stress, thermal stress, or the combined effect of both can produce demagnetization of the PMs, which eventually can result in several adverse effects including decrease in the motor torque and efficiency, and increase of the torque ripple and vibration, eventually degrading the performance and reliability of the motor and drive system. A number of approaches have been proposed for detecting PM demagnetization using model-based flux estimation, signal injection, spectrum analysis of current/back-EMF; however, all these methods show limitations in terms of invasiveness, implementation cost and/or reliability of the diagnosis. In this paper, accurate PM demagnetization detection based on measurements from hall-effect sensors is proposed. Such sensors are often mounted in commercial PMSMs, the proposed method can therefore be implemented at practically no cost.

Original languageEnglish
Title of host publication2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4686-4693
Number of pages8
Volume2017-January
ISBN (Electronic)9781509029983
DOIs
Publication statusPublished - 2017 Nov 3
Externally publishedYes
Event9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States
Duration: 2017 Oct 12017 Oct 5

Other

Other9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
CountryUnited States
CityCincinnati
Period17/10/117/10/5

Keywords

  • Demagnetization
  • Hall-effect sensors
  • Magnetization state estimation
  • Permanent magnet synchronous machines

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization

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  • Cite this

    Reigosa, D., Fernández, D., Park, Y., Diez, A. B., Lee, S. B., & Briz, F. (2017). Detection of demagnetization in permanent magnet synchronous machines using hall-effect sensors. In 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 (Vol. 2017-January, pp. 4686-4693). [8096799] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2017.8096799