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This paper propose the stainless retaining cage of the FSCW-SPM servo motors for retaining the PM. Compared to the FSCW-SPM servo motors with normal stainless sleeve, there is low rotor eddy current losses by using the retaining cage. In this paper, the structure strength of the stainless retaining cage is analyzed and proven having the enough reliability.
Direct-drive Permanent Magnet Synchronous Generators (DDPMSG) are gaining increasingly more attention and application for wind power. This paper presents a comparison among the performance of DDPMSG equipped with three commonly used winding types, integer-slot distributed winding (ISDW), fractional-slot concentrated winding (FSCW) and fractional-slot distributed winding (FSDW). Loss distribution,...
This paper deeply discusses the effect of eccentricity, including static, dynamic and mixed eccentricity on the performance of FSCW SPM servo motor analytically and using finite element analysis (FEA) to validation. The effect of different kinds of eccentricity on magnetic field including magnet field and armature reaction field is described with three factor called modulation factor. The frequency...
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