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Cogging Torque Reduction in Permanent Magnet Machines


Cogging Torque Reduction in Permanent Magnet Machines

Dosiek, L. and Pillay, Pragasen (2007) Cogging Torque Reduction in Permanent Magnet Machines. IEEE Transactions on Industry Applications, 43 (6). pp. 1565-1571. ISSN 0093-9994

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Official URL: http://dx.doi.org/10.1109/TIA.2007.908160


This paper examines two methods - magnet shifting and optimizing the magnet pole arc - for reducing cogging torque in permanent magnet machines. The methods were applied to existing machine designs and their performance was calculated using finite-element analysis (FEA). Prototypes of the machine designs were constructed and experimental results obtained. It is shown that the FEA predicted the cogging torque to be nearly eliminated using the two methods. However, there was some residual cogging in the prototypes due to manufacturing difficulties. In both methods, the back electromotive force was improved by reducing harmonics while preserving the magnitude.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Article
Authors:Dosiek, L. and Pillay, Pragasen
Journal or Publication:IEEE Transactions on Industry Applications
Date:November 2007
ID Code:6548
Deposited On:12 Apr 2010 19:20
Last Modified:08 Dec 2010 23:37
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