Characteristics analysis of double-sided permanent magnet linear synchronous motor with three-phase toroidal windings

Xiaobao Chai, Jikai Si, Yihua Hu, Yingsheng Li, Dongshu Wang

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This paper proposes three-phase 120° phase belt toroidal windings (120°-TW) and are applied in a double-sided permanent magnet linear synchronous motor (DSPMLSM), in which the incoming ends of all coils are on the same side and have the same incoming direction. First, the structure of the proposed motor is introduced and its operation principle is analyzed by describing the variation in the armature magnet field versus time. Second, based on the similar volume, magnetic load and electrical load, the initial parameters of the DSPMLSM with different winding arrangements are presented. Then, the finite-element models (FEMs) of the DSPMLSM with 120°-TW (120°-TWDSPMLSM) and traditional toroidal windings (TTW) are established to analyze the distribution of magnetic field, back electromotive force (back-EMF), detent force, thrust, efficiency and so on. Besides, the primary optimization of the detent force is designed. Finally, the results show that the thrust density and efficiency of the 120°-TWDSPMLSM is higher than that of DSPMLSM with TTW (TTWDSPMLSM).

Original languageEnglish
Pages (from-to)1099-1107
Number of pages9
JournalApplied Computational Electromagnetics Society Journal
Issue number8
Publication statusPublished - 21 Oct 2021

Bibliographical note

Funding Information:
This work is partially supported by Natural Science Foundation of China under grant No.51777060, in part by the Major Special Project for Collaborative Innovation in Zhengzhou No. 20XTZX12023.

Publisher Copyright:


  • Character analysis
  • Double-sided permanent magnet linear synchronous motor
  • Operation principle
  • Three-phase 120° phase belt toroidal windings
  • Thrust density

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