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Analysis of a Low-Cost Air-Gap Winding for Permanent Magnet Synchronous Motors

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2 Author(s)
Wallmark, O. ; Swedish Center of Excellence in Electr. Power Eng. (EKC2), R. Inst. of Technol. (KTH), Stockholm, Sweden ; Kjellqvist, P.

This paper presents an analysis of a concentrated air-gap winding concept intended for low-cost, high-speed applications where the reduced winding construction cost can motivate its use. Expressions for magnet flux linkage, torque, winding inductance, and unbalanced magnetic pull are derived and compared, with good agreement, to measurements and results obtained from finite-element simulations.

Published in:

Energy Conversion, IEEE Transactions on  (Volume:24 ,  Issue: 4 )