DocumentCode
3560448
Title
Influence of Stator Asymmetry on Cogging Torque of Permanent Magnet Brushless Machines
Author
Zhu, Z.Q. ; Chen, J.T. ; Wu, L.J. ; Howe, D.
Author_Institution
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield
Volume
44
Issue
11
fYear
2008
Firstpage
3851
Lastpage
3854
Abstract
The paper investigates the influence of stator asymmetry on the cogging torque of permanent magnet brushless motors. It shows that high localized magnetic saturation due to such asymmetry can significantly increase the magnitude of the cogging torque and introduces cogging components which have an order lower than the least common multiple between the stator slot number and the rotor pole number. The findings are confirmed by both finite element analyses and measurements on an 18-slot, 6-pole prototype motor.
Keywords
brushless machines; permanent magnet motors; 6-pole prototype motor; cogging torque; finite element analyses; permanent magnet brushless machines; rotor pole number; stator asymmetry; stator slot number; Asymmetry; brushless machines; cogging torque; permanent magnet;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2008.2001322
Filename
4717817
Link To Document