Multilayer Concentrated Windings for Axial Flux PM Machines

Vandana Rallabandi, Narges Taran, Dan M. Ionel

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Coreless axial flux machines are of interest because of the absence of stator core losses and cogging torque. These machines generally employ concentrated windings. One of the challenges with such a winding is that the torque producing MMF component that corresponds to the fundamental of the magnet excitation is accompanied by substantial asynchronous components. These harmonics cause losses in the rotor core and magnets, which can become significant at high speeds. This paper proposes a new multilayer winding arrangement to eliminate the non-torque producing MMF components. This winding is applied to a 12-coil 16-pole coreless axial flux machine. The efficacy of the winding is established by 3-D finite-element analysis.

Original languageEnglish
Article number8103104
JournalIEEE Transactions on Magnetics
Issue number6
StatePublished - Jun 2017

Bibliographical note

Publisher Copyright:
© 1965-2012 IEEE.


  • Axial flux machines
  • MMF harmonics
  • multilayer windings

ASJC Scopus subject areas

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


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