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Identifying cogging torque harmonics affected by misalignment in axial flux fractional pitch PMSM

Thiele, Mark and Heins, Greg (2012). Identifying cogging torque harmonics affected by misalignment in axial flux fractional pitch PMSM. In: 2012 XXth International Conference on Electrical Machines (ICEM'2012), Marseille, France, 2-5 September 2012.

Document type: Conference Paper
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IRMA ID 82794376xPUB36
Author Thiele, Mark
Heins, Greg
Title Identifying cogging torque harmonics affected by misalignment in axial flux fractional pitch PMSM
Conference Name 2012 XXth International Conference on Electrical Machines (ICEM'2012)
Conference Location Marseille, France
Conference Dates 2-5 September 2012
Conference Publication Title Proceedings 2012 XXth International Conference on Electrical Machines
Place of Publication Red Hook, NY, United States
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Publication Year 2012
ISBN 9781467301428   (check CDU catalogue open catalogue search in new window)
ISSN 978-1-4673-0142-8   (check CDU catalogue open catalogue search in new window)
Start Page 2969
End Page 2974
Total Pages 6
HERDC Category E1 - Conference Publication (DIISR)
Abstract Cogging torque in fractional pitch PMSM is minimized when manufacturing induced errors are also minimized. This paper investigates additional cogging torque harmonics resulting from misalignment of the rotor and stator caused by assembly and manufacturing tolerances in an axial flux, fractional pitch PMSM. A simulation method utilizing superposition of a single magnet / single slot interaction has been used previously to decouple manufacturing errors such as magnet placement and stator non-uniformity. This work extends on that previously published by inducing varying degrees of assembly misalignment of the stator and rotor to determine the effect on cogging torque waveforms. Experimental data is presented indicating that increasing degrees of offset misalignment leads to increasing sideband magnitudes in the frequency spectrum. There is good agreement between the simulation method and measured data.
Keyword Axial flux
Cogging torque
Fractional pitch
Frequency analysis
PMSM
Torque
Description for Link Link to publisher's version
URL http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6350310
 
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Created: Fri, 17 Jan 2014, 00:20:00 CST