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An axial-flux permanent-magnet brushless motor is designed with variable stator alignment of independent stators, thus allowing field weakening via a controllable and variable generated-voltage constant. This feature is particularly valuable in vehicle traction motors with large constant-power speed ratio, where there is also a strong desire to eliminate the need for gear changes and keep the overall size of the motor drive as small as possible. The advantage of high pole count as applied to this technique is discussed, and the simulation impact on motor drive kilovoltampere, efficiency, gradability, acceleration, and maximum speed over typical driving cycles is shown.
Published in:
Industrial Electronics, IEEE Transactions on
(Volume:57
,
Issue:
2
)
Date of Publication: Feb. 2010
- Page(s):
- 669 - 677
- ISSN :
- 0278-0046
- INSPEC Accession Number:
- 11054641
- Digital Object Identifier :
- 10.1109/TIE.2009.2036022
- Product Type:
- Journals & Magazines
- Date of Publication :
- 13 November 2009
- Date of Current Version :
- 12 January 2010
- Issue Date :
- Feb. 2010
- Sponsored by :
- IEEE Industrial Electronics Society
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