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Reduction of cogging torque in double-rotor axial-flux permanent-magnet disk motors : a review of cost-effective magnet-skewing techniques with experimental verification

Metin Aydin and Mehmet Güleç (UGent)
(2014) IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS. 61(9). p.5025-5034
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Abstract
Minimizing cogging torque in designing axial-flux permanent-magnet (AFPM) motors is one of the main issues which must be considered during the design process. This paper presents several cost-effective magnet-skewing techniques to minimize cogging torque components in double-rotor AFPM motors. Rotorside cogging torque minimization methods are examined in detail with major focus on magnet-skewing approach, and several cost-effective alternative skewing techniques are proposed. A detailed comparison of magnet-skewing approaches is provided. A prototype AFPM motor with different rotor structures is built based on the analyses. Analyses are then validated with experimental results, and the influence of cogging torque component on torque quality of AFPM motors is explored. The results confirm that the proposed magnet-skewing approaches can significantly reduce the cogging component as opposed to reference AFPM motor with unskewed magnets and help to improve the torque quality of the disk motors.
Keywords
Electrical and Electronic Engineering, Control and Systems Engineering, Axial-flux motors, brushless machines, cogging torque, finite-element methods, magnet skewing, permanent-magnet (PM) machines, PM motors, torque pulsations, DESIGN, MINIMIZATION, PREDICTION, MACHINES

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MLA
Aydin, Metin, and Mehmet Güleç. “Reduction of Cogging Torque in Double-Rotor Axial-Flux Permanent-Magnet Disk Motors : A Review of Cost-Effective Magnet-Skewing Techniques with Experimental Verification.” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 61, no. 9, 2014, pp. 5025–34, doi:10.1109/tie.2013.2276777.
APA
Aydin, M., & Güleç, M. (2014). Reduction of cogging torque in double-rotor axial-flux permanent-magnet disk motors : a review of cost-effective magnet-skewing techniques with experimental verification. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 61(9), 5025–5034. https://doi.org/10.1109/tie.2013.2276777
Chicago author-date
Aydin, Metin, and Mehmet Güleç. 2014. “Reduction of Cogging Torque in Double-Rotor Axial-Flux Permanent-Magnet Disk Motors : A Review of Cost-Effective Magnet-Skewing Techniques with Experimental Verification.” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 61 (9): 5025–34. https://doi.org/10.1109/tie.2013.2276777.
Chicago author-date (all authors)
Aydin, Metin, and Mehmet Güleç. 2014. “Reduction of Cogging Torque in Double-Rotor Axial-Flux Permanent-Magnet Disk Motors : A Review of Cost-Effective Magnet-Skewing Techniques with Experimental Verification.” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 61 (9): 5025–5034. doi:10.1109/tie.2013.2276777.
Vancouver
1.
Aydin M, Güleç M. Reduction of cogging torque in double-rotor axial-flux permanent-magnet disk motors : a review of cost-effective magnet-skewing techniques with experimental verification. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS. 2014;61(9):5025–34.
IEEE
[1]
M. Aydin and M. Güleç, “Reduction of cogging torque in double-rotor axial-flux permanent-magnet disk motors : a review of cost-effective magnet-skewing techniques with experimental verification,” IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 61, no. 9, pp. 5025–5034, 2014.
@article{8734259,
  abstract     = {{Minimizing cogging torque in designing axial-flux permanent-magnet (AFPM) motors is one of the main issues which must be considered during the design process. This paper presents several cost-effective magnet-skewing techniques to minimize cogging torque components in double-rotor AFPM motors. Rotorside cogging torque minimization methods are examined in detail with major focus on magnet-skewing approach, and several cost-effective alternative skewing techniques are proposed. A detailed comparison of magnet-skewing approaches is provided. A prototype AFPM motor with different rotor structures is built based on the analyses. Analyses are then validated with experimental results, and the influence of cogging torque component on torque quality of AFPM motors is explored. The results confirm that the proposed magnet-skewing approaches can significantly reduce the cogging component as opposed to reference AFPM motor with unskewed magnets and help to improve the torque quality of the disk motors.}},
  author       = {{Aydin, Metin and Güleç, Mehmet}},
  issn         = {{0278-0046}},
  journal      = {{IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS}},
  keywords     = {{Electrical and Electronic Engineering,Control and Systems Engineering,Axial-flux motors,brushless machines,cogging torque,finite-element methods,magnet skewing,permanent-magnet (PM) machines,PM motors,torque pulsations,DESIGN,MINIMIZATION,PREDICTION,MACHINES}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{5025--5034}},
  title        = {{Reduction of cogging torque in double-rotor axial-flux permanent-magnet disk motors : a review of cost-effective magnet-skewing techniques with experimental verification}},
  url          = {{http://doi.org/10.1109/tie.2013.2276777}},
  volume       = {{61}},
  year         = {{2014}},
}
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