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Multi-Step Method for Axial-Flux Permanent-Magnet Motor to Reduce Performance Analysis Time

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Title: Multi-Step Method for Axial-Flux Permanent-Magnet Motor to Reduce Performance Analysis Time
Authors: Ji-Sung Lee, Dong-Kuk Lim, Dong-Hee Lee, Peel-Joong Kim, Han-Kyeol Yeo
Source: IEEE Access, Vol 13, Pp 64353-64363 (2025)
Publisher Information: IEEE, 2025.
Publication Year: 2025
Collection: LCC:Electrical engineering. Electronics. Nuclear engineering
Subject Terms: Analysis method, axial-flux permanent-magnet motor, finite element method, quasi-3D, yokeless and segmented armature, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
More Details: This paper proposes a novel multi-step analysis (MSA) method to reduce the analysis time and improve the accuracy of finite element analysis (FEA) for axial-flux permanent-magnet motors (AFPMM). Unlike the conventional method of performing full-step analysis (FSA) over one period of electrical angle, the MSA accurately derives the average torque and fundamental voltage results by utilizing only two steps. To validate the performance of the MSA, the analysis accuracy and reduction in analysis time for torque-beta, voltage-beta, and torque-speed curves are compared between the MSA, FSA, and quasi-3D FEA which is another analysis time reduction method across the four cases of pole-slot combinations of yokeless and segmented armature (YASA) type AFPMM. The MSA confirms its overwhelming performance compared to quasi-3D FEA, and compared to FSA, it achieved a maximum error rate of 0.26% for torque-beta, 0.32% for voltage-beta, and 0.30% for torque-speed, along with a 94% reduction in analysis time. Furthermore, the effectiveness of the analysis method is validated through the experimental results of a 20pole-18slot YASA type AFPMM. The proposed analysis method is expected to be widely utilized by motor designers and engineers in the initial design and characteristic curve derivation stages, as it can be universally applied to complex geometries and radial flux permanent magnet motors.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2169-3536
Relation: https://ieeexplore.ieee.org/document/10960676/; https://doaj.org/toc/2169-3536
DOI: 10.1109/ACCESS.2025.3559177
Access URL: https://doaj.org/article/d4690af1df4a4311bc97f107165c6bd5
Accession Number: edsdoj.4690af1df4a4311bc97f107165c6bd5
Database: Directory of Open Access Journals
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  Data: Multi-Step Method for Axial-Flux Permanent-Magnet Motor to Reduce Performance Analysis Time
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  Data: <searchLink fieldCode="AR" term="%22Ji-Sung+Lee%22">Ji-Sung Lee</searchLink><br /><searchLink fieldCode="AR" term="%22Dong-Kuk+Lim%22">Dong-Kuk Lim</searchLink><br /><searchLink fieldCode="AR" term="%22Dong-Hee+Lee%22">Dong-Hee Lee</searchLink><br /><searchLink fieldCode="AR" term="%22Peel-Joong+Kim%22">Peel-Joong Kim</searchLink><br /><searchLink fieldCode="AR" term="%22Han-Kyeol+Yeo%22">Han-Kyeol Yeo</searchLink>
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  Data: IEEE Access, Vol 13, Pp 64353-64363 (2025)
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  Data: LCC:Electrical engineering. Electronics. Nuclear engineering
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  Data: <searchLink fieldCode="DE" term="%22Analysis+method%22">Analysis method</searchLink><br /><searchLink fieldCode="DE" term="%22axial-flux+permanent-magnet+motor%22">axial-flux permanent-magnet motor</searchLink><br /><searchLink fieldCode="DE" term="%22finite+element+method%22">finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22quasi-3D%22">quasi-3D</searchLink><br /><searchLink fieldCode="DE" term="%22yokeless+and+segmented+armature%22">yokeless and segmented armature</searchLink><br /><searchLink fieldCode="DE" term="%22Electrical+engineering%2E+Electronics%2E+Nuclear+engineering%22">Electrical engineering. Electronics. Nuclear engineering</searchLink><br /><searchLink fieldCode="DE" term="%22TK1-9971%22">TK1-9971</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: This paper proposes a novel multi-step analysis (MSA) method to reduce the analysis time and improve the accuracy of finite element analysis (FEA) for axial-flux permanent-magnet motors (AFPMM). Unlike the conventional method of performing full-step analysis (FSA) over one period of electrical angle, the MSA accurately derives the average torque and fundamental voltage results by utilizing only two steps. To validate the performance of the MSA, the analysis accuracy and reduction in analysis time for torque-beta, voltage-beta, and torque-speed curves are compared between the MSA, FSA, and quasi-3D FEA which is another analysis time reduction method across the four cases of pole-slot combinations of yokeless and segmented armature (YASA) type AFPMM. The MSA confirms its overwhelming performance compared to quasi-3D FEA, and compared to FSA, it achieved a maximum error rate of 0.26% for torque-beta, 0.32% for voltage-beta, and 0.30% for torque-speed, along with a 94% reduction in analysis time. Furthermore, the effectiveness of the analysis method is validated through the experimental results of a 20pole-18slot YASA type AFPMM. The proposed analysis method is expected to be widely utilized by motor designers and engineers in the initial design and characteristic curve derivation stages, as it can be universally applied to complex geometries and radial flux permanent magnet motors.
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        Value: 10.1109/ACCESS.2025.3559177
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        PageCount: 11
        StartPage: 64353
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      – SubjectFull: Analysis method
        Type: general
      – SubjectFull: axial-flux permanent-magnet motor
        Type: general
      – SubjectFull: finite element method
        Type: general
      – SubjectFull: quasi-3D
        Type: general
      – SubjectFull: yokeless and segmented armature
        Type: general
      – SubjectFull: Electrical engineering. Electronics. Nuclear engineering
        Type: general
      – SubjectFull: TK1-9971
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    Titles:
      – TitleFull: Multi-Step Method for Axial-Flux Permanent-Magnet Motor to Reduce Performance Analysis Time
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