A Wide Air Gap Flux Switching Bearingless Motor With Odd and Even Pole Pair Numbers
Open access
Date
2020-07-23Type
- Journal Article
ETH Bibliography
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Abstract
This paper introduces a bearingless motor topology with a magnet-free rotor that provides a higher rotor torque density and wider magnetic air gap compared to previously published topologies. The stray flux is minimized by using a stator with only eight teeth in temple configuration that contain permanent magnets. The motor performance is analyzed based on experimental prototypes, that were designed using 3D FEM simulations, for even and odd rotor pole pair numbers of six and nine, respectively. Control schemes that compensate parasitic radial forces to achieve stable magnetic levitation of the rotors are presented. The implemented prototypes reached a rotational speed of 2000 rpm and a maximum torque of 8 Nm. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000461568Publication status
publishedExternal links
Journal / series
IEEE Open Journal of Industry ApplicationsVolume
Pages / Article No.
Publisher
IEEESubject
Flux switching; High torque; Magnetic levitation; Reluctance rotor; Temple motor; Wide air gap machineOrganisational unit
03573 - Kolar, Johann W. / Kolar, Johann W.
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ETH Bibliography
yes
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