A dynamic model for bearingless flux-switching permanent-magnet linear machines

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Abstract

This article deals with dynamic models for three-phase bearingless flux-switching permanent-magnet (FSPM) linear machines. This machine type can be used to build a magnetically levitating long-range linear drive system, whose rail does not need any active materials apart from iron. A dynamic machine model is developed by means of equivalent magnetic models, taking into account air-gap variation and magnetic saturation. The effects of these phenomena are analyzed using finite-element method (FEM) simulations of a test machine. The parameters of the proposed model can be identified using the FEM or measured data. The model can be applied to real-time control and time-domain simulations. The model is validated by means of experiments.

Original languageEnglish
Article number9003283
Pages (from-to)1218-1227
Number of pages10
JournalIEEE Transactions on Energy Conversion
Volume35
Issue number3
DOIs
Publication statusPublished - 19 Feb 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Bearings
  • Flux-switching
  • Permanent-magnet (FSPM) machine
  • Linear least squares (LLS)
  • Linear motor
  • Magnetic levitation
  • Magnetic model
  • Modeling

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