Performance evaluation of fractional-slot tubular permanent magnet machines with low space harmonics
This paper evaluates the perforamnce of fractional-slot per pole winding configurations for tubular permanent magnet (PM) machines that can effectively eliminate the most undesirable space harmonics in a simple and cost-effective manner. The benefits of the proposed machine topology winding configur...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2015-12-01
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| Series: | Archives of Electrical Engineering |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/aee.2015.64.issue-4/aee-2015-0049/aee-2015-0049.xml?format=INT |
| Summary: | This paper evaluates the perforamnce of fractional-slot per pole winding configurations for tubular permanent magnet (PM) machines that can effectively eliminate the most undesirable space harmonics in a simple and cost-effective manner. The benefits of the proposed machine topology winding configurations are illustrated through comparison with 9-slot, 10-pole tubular PM machine developed for a free piston energy converter under the same specification and volumetric constraints. It has been shown that the proposed machine topology results in more than 7 times reduction in the eddy current loss in the mover magnets and supporting tube, and hence avoids potential problem of excessive mover temperature and risk of demagnetization. |
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| ISSN: | 2300-2506 |