Design and Analysis of a Permanent Magnet Frameless Motor

Guo, K; Guo, Y; Fang, S; Li, C; Xue, W

Design and Analysis of a Permanent Magnet Frameless Motor

Guo, K Guo, Y

Fang, S Li, C Xue, W

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Journal of Emerging and Selected Topics in Power Electronics, 2024, 12, (3), pp. 3124-3134
Issue Date:: 2024-06-01

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Field	Value	Language
dc.contributor.author	Guo, K
dc.contributor.author	Guo, Y https://orcid.org/0000-0001-6182-0684
dc.contributor.author	Fang, S
dc.contributor.author	Li, C
dc.contributor.author	Xue, W
dc.date.accessioned	2024-08-07T05:08:05Z
dc.date.available	2024-08-07T05:08:05Z
dc.date.issued	2024-06-01
dc.identifier.citation	IEEE Journal of Emerging and Selected Topics in Power Electronics, 2024, 12, (3), pp. 3124-3134
dc.identifier.issn	2168-6777
dc.identifier.issn	2168-6785
dc.identifier.uri	http://hdl.handle.net/10453/180274
dc.description.abstract	Compared to the conventional frame motor, the frameless motor (FlM) has lower torque ripple and higher power density, which becomes the ideal selection in the robotic field. In this article, a novel permanent magnet (PM) FlM is proposed, which has a modular three-teeth stator structure and toroidal windings. The air gap flux density and cogging torque are analyzed by analytical method (AM), and back electromotive force (EMF) and torque of the PMFlM are calculated by magnetic circuit method, which can be used to achieve the best parameter values of PMFlM. The torque density of PMFlM is improved by increasing the axial length of the rotor and PM poles. A PM synchronous motor (SM) with toroidal winding and air gap in the stator pole (topology II) and traditional PMSM (topology III) are designed. A prototype is manufactured, and the electromagnetic characteristics of PMFlM are analyzed by both the experimental test and finite element method (FEM). While the three topologies have the same volume, the amplitude of the back EMF and the torque density of PMFlM are improved by 55.7% and 35.8% compared to those of topology II, respectively. The torque density of PMFlM is larger by 3.5% than that of topology III.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Journal of Emerging and Selected Topics in Power Electronics
dc.relation.isbasedon	10.1109/JESTPE.2024.3378163
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	4008 Electrical engineering
dc.subject.classification	4009 Electronics, sensors and digital hardware
dc.title	Design and Analysis of a Permanent Magnet Frameless Motor
dc.type	Journal Article
utslib.citation.volume	12
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2026-03-18T00:00:00+1000Z
dc.date.updated	2024-08-07T05:07:58Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	12
utslib.citation.issue	3

Abstract:

Compared to the conventional frame motor, the frameless motor (FlM) has lower torque ripple and higher power density, which becomes the ideal selection in the robotic field. In this article, a novel permanent magnet (PM) FlM is proposed, which has a modular three-teeth stator structure and toroidal windings. The air gap flux density and cogging torque are analyzed by analytical method (AM), and back electromotive force (EMF) and torque of the PMFlM are calculated by magnetic circuit method, which can be used to achieve the best parameter values of PMFlM. The torque density of PMFlM is improved by increasing the axial length of the rotor and PM poles. A PM synchronous motor (SM) with toroidal winding and air gap in the stator pole (topology II) and traditional PMSM (topology III) are designed. A prototype is manufactured, and the electromagnetic characteristics of PMFlM are analyzed by both the experimental test and finite element method (FEM). While the three topologies have the same volume, the amplitude of the back EMF and the torque density of PMFlM are improved by 55.7% and 35.8% compared to those of topology II, respectively. The torque density of PMFlM is larger by 3.5% than that of topology III.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/180274