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Comparative analysis of partitioned stator flux reversal PM machines having fractional-slot nonoverlapping and integer-slot overlapping windings
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Wu, Zhongze, Zhu, Z. Q. and Zhan, H. L. (2016) Comparative analysis of partitioned stator flux reversal PM machines having fractional-slot nonoverlapping and integer-slot overlapping windings. IEEE Transactions on Energy Conversion, 31 (2). pp. 776-788. doi:10.1109/TEC.2016.2525826 ISSN 0885-8969.
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Official URL: http://dx.doi.org/10.1109/TEC.2016.2525826
Abstract
This paper proposes a new partitioned stator flux reversal permanent magnet (PM) (PS-FRPM) machine having integer-slot overlapping windings, i.e., the slot number per pole per phase q is an integer, based on the magnetic gearing effect in stator-PM machines. Compared with the existing PS-FRPM machine with fractional-slot nonoverlapping windings, a more sinusoidal armature reaction magnetomotive force can be achieved in the proposed PS-FRPM machine with integer-slot overlapping windings, resulting in lower iron loss and PM loss. Electromagnetic performance of the PS-FRPM machine, which has q = 1 overlapping windings is analyzed and compared with PS-FRPM machine, which has q = 0.5 nonoverlapping windings by finite element (FE) analysis. FE results show that the proposed 24/10/12-outer-stator/rotor/inner-stator-pole PS-FRPM machine with q = 1 overlapping winding exhibits higher fundamental phase back-electromotive force, higher average electromagnetic torque and lower torque ripple, lower loss and higher efficiency, higher self-inductance but lower mutual inductance, higher d-axis inductance, and potential infinite flux-weakening capability compared with the 12/10/12-outer-stator/rotor/inner-stator-pole PS-FRPM machine with q = 0.5 nonoverlapping windings. Both prototype machines with q = 1 overlapping winding and q = 0.5 nonoverlapping windings are built and tested to verify the FE analyzes.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | IEEE Transactions on Energy Conversion | ||||||||
Publisher: | IEEE | ||||||||
ISSN: | 0885-8969 | ||||||||
Official Date: | June 2016 | ||||||||
Dates: |
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Volume: | 31 | ||||||||
Number: | 2 | ||||||||
Page Range: | pp. 776-788 | ||||||||
DOI: | 10.1109/TEC.2016.2525826 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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