Three-Phase Modulated Pole Machine Topologies Utilizing Mutual Flux Paths

Jamie G. Washington, Glynn J. Atkinson, Nick J. Baker, Alan G. Jack, Barrie C. Mecrow, Bogi Bech Jensen, Lars-Olov Pennander, Göran L. Nord, Lars Sjöberg

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Abstract

This paper discusses three-phase topologies for modulated
pole machines (MPMs). The authors introduce a new threephase
topology, which takes advantage of mutual flux paths; this
is analyzed using 3-D finite-element methods and compared to a
three-phase topology using three single-phase units stacked axially.
The results show that the new “combined-phase MPM” exhibits
a greater torque density, while offering a reduction in the
number of components. The results obtained from two prototypes
are also presented to verify the concept; the results show that the
“combined-phase” machine could provide both performance and
constructional benefits over prior MPM topologies.
Original languageEnglish
JournalI E E E Transactions on Energy Conversion
Volume27
Issue number2
Pages (from-to)507-515
ISSN0885-8969
DOIs
Publication statusPublished - 2012

Keywords

  • AC machine
  • Modulated pole
  • Mutual flux path
  • Permanent magnet machine
  • Phase isolation
  • Three phase
  • Transverse flux
  • torque dense

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