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Analysis of fields and forces in a permanent magnet linear synchronous machine based on the concept of magnetic charge

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2 Author(s)
Xiong, G. ; Dept. of Electr. Eng., Kentucky Univ., Lexington, KY, USA ; Nasar, S.A.

Two-dimensional and three-dimensional field distributions produced by permanent magnets (PMs) of a permanent-magnet linear synchronous motor (PMLSM) are obtained in analytical forms, based on the concept of magnetic charge and the method of images. The determination of electromagnetic forces and parameters of this type of a motor is examined. The proposed method and the resulting simplified formulas are useful for the design and analysis of PMLSMs as well as for other types of PM motors. Calculated results compare favorably with the experimental results, and thus validate the assumptions and the analysis

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Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 3 )