Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State
In this article, a simple and practical magnetic equivalent charge model is proposed to predict the torque of a slotted-type axial-flux magnetic coupler (SAMC) under conditions of radial misalignment, angle misalignment, and synthetic misalignment. The magnetic field generated by the permanent magne...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-10-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/12/11/751 |
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| author | Yutang Qi Chaojun Yang Yiwen Zhang Chao Guo Amberbir Wondimu Tadesse |
| author_facet | Yutang Qi Chaojun Yang Yiwen Zhang Chao Guo Amberbir Wondimu Tadesse |
| author_sort | Yutang Qi |
| collection | DOAJ |
| description | In this article, a simple and practical magnetic equivalent charge model is proposed to predict the torque of a slotted-type axial-flux magnetic coupler (SAMC) under conditions of radial misalignment, angle misalignment, and synthetic misalignment. The magnetic field generated by the permanent magnet (PM) disk and the induced magnetic field generated by the slotted conductor sheet (CS) are equivalent to the surface magnetic charge, respectively. Particularly, the induced magnetic field produced by eddy current considering skin depth in the conductor sheet is introduced into the magnetic equivalent charge model. Combined with Coulomb’s law of magnetic field, the formulas of torque and axial force are both derived. Using this method, the torques in three cases of misalignment are calculated. Finally, the effectiveness of the model is verified by the finite element method (FEM) and experiment; the results calculated by the magnetic equivalent charge model are basically consistent with those from the finite element method and experiment. The derived formula is suitable for small air gaps, small slip rates, and small radial deflection distances. Additionally, the limitations of the method proposed are discussed, which is of great help for understanding the torque transmission of the magnetic coupler in the misalignment state. |
| format | Article |
| id | doaj-art-d58ebd7093a9450bb005d6f93773e22a |
| institution | OA Journals |
| issn | 2075-1702 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj-art-d58ebd7093a9450bb005d6f93773e22a2025-08-20T01:54:02ZengMDPI AGMachines2075-17022024-10-01121175110.3390/machines12110751Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment StateYutang Qi0Chaojun Yang1Yiwen Zhang2Chao Guo3Amberbir Wondimu Tadesse4School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, ChinaIn this article, a simple and practical magnetic equivalent charge model is proposed to predict the torque of a slotted-type axial-flux magnetic coupler (SAMC) under conditions of radial misalignment, angle misalignment, and synthetic misalignment. The magnetic field generated by the permanent magnet (PM) disk and the induced magnetic field generated by the slotted conductor sheet (CS) are equivalent to the surface magnetic charge, respectively. Particularly, the induced magnetic field produced by eddy current considering skin depth in the conductor sheet is introduced into the magnetic equivalent charge model. Combined with Coulomb’s law of magnetic field, the formulas of torque and axial force are both derived. Using this method, the torques in three cases of misalignment are calculated. Finally, the effectiveness of the model is verified by the finite element method (FEM) and experiment; the results calculated by the magnetic equivalent charge model are basically consistent with those from the finite element method and experiment. The derived formula is suitable for small air gaps, small slip rates, and small radial deflection distances. Additionally, the limitations of the method proposed are discussed, which is of great help for understanding the torque transmission of the magnetic coupler in the misalignment state.https://www.mdpi.com/2075-1702/12/11/751slotted-type axial-flux magnetic coupler (SAMC)magnetic equivalent chargemisalignmentinduce eddy currentstorque |
| spellingShingle | Yutang Qi Chaojun Yang Yiwen Zhang Chao Guo Amberbir Wondimu Tadesse Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State Machines slotted-type axial-flux magnetic coupler (SAMC) magnetic equivalent charge misalignment induce eddy currents torque |
| title | Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State |
| title_full | Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State |
| title_fullStr | Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State |
| title_full_unstemmed | Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State |
| title_short | Torque Characteristics Analysis of Slotted-Type Axial-Flux Magnetic Coupler in the Misalignment State |
| title_sort | torque characteristics analysis of slotted type axial flux magnetic coupler in the misalignment state |
| topic | slotted-type axial-flux magnetic coupler (SAMC) magnetic equivalent charge misalignment induce eddy currents torque |
| url | https://www.mdpi.com/2075-1702/12/11/751 |
| work_keys_str_mv | AT yutangqi torquecharacteristicsanalysisofslottedtypeaxialfluxmagneticcouplerinthemisalignmentstate AT chaojunyang torquecharacteristicsanalysisofslottedtypeaxialfluxmagneticcouplerinthemisalignmentstate AT yiwenzhang torquecharacteristicsanalysisofslottedtypeaxialfluxmagneticcouplerinthemisalignmentstate AT chaoguo torquecharacteristicsanalysisofslottedtypeaxialfluxmagneticcouplerinthemisalignmentstate AT amberbirwondimutadesse torquecharacteristicsanalysisofslottedtypeaxialfluxmagneticcouplerinthemisalignmentstate |