Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines
Permanent magnet machines, such as flux-switching permanent magnet (FSPM) machines, are characterized by cogging torque, which must be addressed because it leads to torque fluctuations. With permanent magnetics usually buried in the stator winding of FSPM machines, cogging torque occurs due to the m...
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The Korean Institute of Electromagnetic Engineering and Science
2025-01-01
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| Series: | Journal of Electromagnetic Engineering and Science |
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| Online Access: | https://www.jees.kr/upload/pdf/jees-2025-1-r-273.pdf |
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| author | Emrah Cetin |
| author_facet | Emrah Cetin |
| author_sort | Emrah Cetin |
| collection | DOAJ |
| description | Permanent magnet machines, such as flux-switching permanent magnet (FSPM) machines, are characterized by cogging torque, which must be addressed because it leads to torque fluctuations. With permanent magnetics usually buried in the stator winding of FSPM machines, cogging torque occurs due to the mutual effects of the stator magnetic field and the rotor ferromagnetic material. In this study, the unequal rotor slot arc (URSA) method, which manipulates the magnetic permeance distribution (MPD) in the airgap, is employed to diminish the cogging torque. Furthermore, to demonstrate the effects of MPD, a mathematical model is developed. Parametric optimization is implemented to obtain the optimal cogging torque value that also maintains a convenient average torque output. The results show that the proposed URSA technique significantly reduces cogging torque. |
| format | Article |
| id | doaj-art-a1088bf70ef54b6597bcd195e92f8f4d |
| institution | DOAJ |
| issn | 2671-7255 2671-7263 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Korean Institute of Electromagnetic Engineering and Science |
| record_format | Article |
| series | Journal of Electromagnetic Engineering and Science |
| spelling | doaj-art-a1088bf70ef54b6597bcd195e92f8f4d2025-08-20T02:43:17ZengThe Korean Institute of Electromagnetic Engineering and ScienceJournal of Electromagnetic Engineering and Science2671-72552671-72632025-01-0125181510.26866/jees.2025.1.r.2733718Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching MachinesEmrah CetinPermanent magnet machines, such as flux-switching permanent magnet (FSPM) machines, are characterized by cogging torque, which must be addressed because it leads to torque fluctuations. With permanent magnetics usually buried in the stator winding of FSPM machines, cogging torque occurs due to the mutual effects of the stator magnetic field and the rotor ferromagnetic material. In this study, the unequal rotor slot arc (URSA) method, which manipulates the magnetic permeance distribution (MPD) in the airgap, is employed to diminish the cogging torque. Furthermore, to demonstrate the effects of MPD, a mathematical model is developed. Parametric optimization is implemented to obtain the optimal cogging torque value that also maintains a convenient average torque output. The results show that the proposed URSA technique significantly reduces cogging torque.https://www.jees.kr/upload/pdf/jees-2025-1-r-273.pdfcogging torque reductionflux switchingmagnetic permeance distributionpermanent magnetunequal rotor slot arc |
| spellingShingle | Emrah Cetin Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines Journal of Electromagnetic Engineering and Science cogging torque reduction flux switching magnetic permeance distribution permanent magnet unequal rotor slot arc |
| title | Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines |
| title_full | Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines |
| title_fullStr | Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines |
| title_full_unstemmed | Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines |
| title_short | Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines |
| title_sort | cogging torque mitigation using the unequal rotor slot arcs method based on magnetic permeance distribution for flux switching machines |
| topic | cogging torque reduction flux switching magnetic permeance distribution permanent magnet unequal rotor slot arc |
| url | https://www.jees.kr/upload/pdf/jees-2025-1-r-273.pdf |
| work_keys_str_mv | AT emrahcetin coggingtorquemitigationusingtheunequalrotorslotarcsmethodbasedonmagneticpermeancedistributionforfluxswitchingmachines |