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This paper presents the design of a 1 kW permanent magnet brushless motor operating at 20-40 krpm. The design procedure involves parametrical research of the most convenient motor configuration through a coupled thermal and electromagnetic analysis. The preliminary design is based on the solution of Maxwell's equations and is followed by a finite element analysis. A slotted and a slotless motor configurations have been taken into account, with different permanent magnet materials for an overall comparison of the motor performance.
Bianchi et al. (Wed,) studied this question.