Finite element analysis of an interior-magnet brushless D.C. Machine, with a step-skewed rotor

J. F. Eastham, D. M. Ionel, M. J. Balchin, T. Betzer, E. Demeter

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The use of finite-element (FE) analysis as a tool for optimising the design of a new form of permanent-magnet electrical machine is described. In order to reduce unwanted torque and generated voltage pulsations, the rotor is divided into a number of separate sections that have both axial separation and different radial positions. FE analysis is employed to optimise: (i) spacer width between the rotor sections, and (ii) radial positioning of sections, in order to give minimum torque and voltage pulsation. In comparison with a single-section rotor, it was found that a 3-section rotor gave an 89% reduction in peak-to-peak torque pulsation. Where possible, the accuracy of the FE method was confirmed by comparison with experimental measurements.

Original languageEnglish
Pages (from-to)2117-2119
Number of pages3
JournalIEEE Transactions on Magnetics
Volume33
Issue number2 PART 2
DOIs
StatePublished - 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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