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Stator Slitting of 12-Slot 10-Pole Concentrated Winding Motors


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Title: Stator Slitting of 12-Slot 10-Pole Concentrated Winding Motors
Authors: Yokoi, Yuichi / Higuchi, Tsuyoshi
Issue Date: 12-Jun-2018
Publisher: IEEE
Citation: IEEE Transactions on Industry Applications, 54(5), pp.4377-4385; 2018
Abstract: This paper proposes a design method of stator cores to modify the component ratio of space harmonics in the magnetic field due to stator windings for 12-slot 10-pole concentrated winding motors. The method inserts slit-like magnetic flux barriers in stator wound teeth. In fractional-slot concentrated winding motors, the magnetic field due to stator windings includes dominant space harmonics with a specific space harmonic that produces drive torque. These space harmonics give rise to undesirable effects that increase iron loss in cores and eddy-current loss in magnets. For 12-slot 10-pole motors with single-layer windings, the proposed method increases the driving space harmonic and decreases dominant detrimental space harmonics. This modification of the space harmonics leads to torque enhancement and efficiency improvement. The efficacy of the proposed method is determined by deriving the winding factor, estimating magnetic flux distribution and motor performance through a finite element method analysis, and demonstrating the actual motor performance of a prototype.
Keywords: Fractional-slot concentrated windings (FSCW) / permanent magnet (PM) motors / space harmonics / stator slitting / winding factor
URI: http://hdl.handle.net/10069/38876
ISSN: 00939994
DOI: 10.1109/TIA.2018.2846591
Rights: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/38876

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