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Detent force analysis in permanent magnet linear synchronous motor considering longitudinal end effects

  • A. Liyi Li*
  • , B. Mingna Ma
  • , C. Qingquan Chen
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a uniform analytical model by energy method and Fourier series expansion to analyze detent force in uneven magnetic field for permanent magnet linear synchronous motor (PMLSM). The model reveals that detent force in long-primary type is mainly influenced by non-ideal distribution of permanent magnet magnetic motive force, while nounified air-gap permeance makes a great impact on detent force of short-primary type. Hence, magnetic field similarity of motor design techniques referring rotary counterpart are adopted. For long-primary type novel method of splitting edge magnets is proposed to reduce end effects force, and optimal widths of edge tooth in short-primary type also verify the effectiveness of magnetic field similarity. The experimental results validate finite element analysis results.

Original languageEnglish
Title of host publicationICEMS 2012 - Proceedings
Subtitle of host publication15th International Conference on Electrical Machines and Systems
StatePublished - 2012
Event15th International Conference on Electrical Machines and Systems, ICEMS 2012 - Sapporo, Japan
Duration: 21 Oct 201224 Oct 2012

Publication series

NameICEMS 2012 - Proceedings: 15th International Conference on Electrical Machines and Systems

Conference

Conference15th International Conference on Electrical Machines and Systems, ICEMS 2012
Country/TerritoryJapan
CitySapporo
Period21/10/1224/10/12

Keywords

  • End effects
  • energy method
  • harmonics
  • magnet shape

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