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Electromagnetic analysis of a novel cylindrical transverse-flux permanent-magnet linear machine

  • School of Electrical Engineering and Automation, Harbin Institute of Technology
  • China Aerospace Science and Technology Corporation

Research output: Contribution to journalArticlepeer-review

Abstract

Cylindrical transverse-flux permanent-magnet linear machine (TFPMLM) is a novel electric machine used for free piston energy converters. As the disadvantages of low power factor and complex manufacture exist in the conventional TFPMLM, this paper employs the staggered (not overlapped) stator teeth to reduce the flux leakage, and further increase the power factor and force density. In this paper the flux leakage and performances of two topologies are researched and compared. Then thorough analysis is made on axial 3-phase TFPMLM, which has great potential in force density and power factor. Thrust fluctuation, force density and power factor of the axial TFPMLM are analyzed. Moreover, the methods to improve force density and power factor are researched. Finally, a scheme with power factor up to 0.52, force density up to 2.17×105N/m3 is developed.

Original languageEnglish
Pages (from-to)879-891
Number of pages13
JournalApplied Computational Electromagnetics Society Journal
Volume28
Issue number9
StatePublished - Sep 2013
Externally publishedYes

Keywords

  • Flux leakage
  • Force density
  • Linear machine
  • Power factor
  • Transverse flux

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