Efficiency Decrease Estimation of a Permanent Magnet Synchronous Machine with Demagnetization Faults

Hongwen He, Nana Zhou, Chao Sun*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

19 Citations (Scopus)

Abstract

Demagnetization in permanent magnet synchronous machine (PMSM) is a special and common fault which greatly reduces the motor's efficiency, and thus an electric vehicle's performance. In this paper, we propose a method to estimate the motor's operating efficiency reduction after a certain flux density degradation. The aim is to reflect the relationship between the PMSM complete demagnetization and the resultant efficiency variation. The demagnetized motor is also introduced into the energy management of a plug-in hybrid electric vehicle (PHEV) based on dynamic programming to investigate its influence on the energy consumption. Simulation results indicate that the fuel economy reduces tremendously when the flux-density degrades by 20% and over.

Original languageEnglish
Pages (from-to)2718-2724
Number of pages7
JournalEnergy Procedia
Volume105
DOIs
Publication statusPublished - 2017
Event8th International Conference on Applied Energy, ICAE 2016 - Beijing, China
Duration: 8 Oct 201611 Oct 2016

Keywords

  • Demagnetizatin Fault
  • Efficiency Estimation
  • Energy Management
  • PHEV
  • PMSM

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