Torque ripple investigation in coaxial magnetic gears
Magnetic gears offer significant advantages such as low noise and vibration level, lower maintenance and higher reliability compared to mechanical gears and are suitable for many applications in the industry. The coaxial magnetic gear has been extensively discussed in the literature, since it achiev...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | MATEC Web of Conferences |
| Subjects: | |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2022/13/matecconf_pt22_01004.pdf |
| _version_ | 1828131536297263104 |
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| author | Tzouganakis Panteleimon Gakos Vasilios Kalligeros Christos Papalexis Christos Tsolakis Antonios Spitas Vasilios |
| author_facet | Tzouganakis Panteleimon Gakos Vasilios Kalligeros Christos Papalexis Christos Tsolakis Antonios Spitas Vasilios |
| author_sort | Tzouganakis Panteleimon |
| collection | DOAJ |
| description | Magnetic gears offer significant advantages such as low noise and vibration level, lower maintenance and higher reliability compared to mechanical gears and are suitable for many applications in the industry. The coaxial magnetic gear has been extensively discussed in the literature, since it achieves higher torque densities amongst other magnetic gear configurations. The magnetic field is generated by permanent magnets mounted on the two rotors and a modulator between them. The modulator consists of ferromagnetic segments that are typically encased in a resin in order to increase its stiffness without compromising the generated magnetic field. However, due to the development of radial forces, oscillations of the ferromagnetic segments occur, which lead to torque ripples that affect the operation of the coaxial magnetic gear drive in applications where accuracy is required. This work introduces a computationally lightweight analytical 2D model in order to determine the applied radial force on the ferromagnetic segments at each angle of rotation of the two rotors and henceforth calculate the displacement of these segments using FEA. In this way it is possible to assess the variation of the torque (ripple) versus the angle of rotation of the input or output shaft. A parametric investigation examining the influence of the ferromagnetic segment thickness on the resulting torque ripple of a specific drive was carried out illustrating the benefits of the analytical models developed herein. |
| first_indexed | 2024-04-11T16:49:47Z |
| format | Article |
| id | doaj.art-39c2392e251747f8a6afd402e68ebe86 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-04-11T16:49:47Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-39c2392e251747f8a6afd402e68ebe862022-12-22T04:13:28ZengEDP SciencesMATEC Web of Conferences2261-236X2022-01-013660100410.1051/matecconf/202236601004matecconf_pt22_01004Torque ripple investigation in coaxial magnetic gearsTzouganakis Panteleimon0Gakos Vasilios1Kalligeros Christos2Papalexis Christos3Tsolakis Antonios4Spitas Vasilios5Laboratory of Machine Elements and Vehicles, University of West AtticaLaboratory of Machine Design, National Technical University of AthensLaboratory of Machine Design, National Technical University of AthensLaboratory of Machine Elements and Vehicles, University of West AtticaLaboratory of Machine Elements and Vehicles, University of West AtticaLaboratory of Machine Design, National Technical University of AthensMagnetic gears offer significant advantages such as low noise and vibration level, lower maintenance and higher reliability compared to mechanical gears and are suitable for many applications in the industry. The coaxial magnetic gear has been extensively discussed in the literature, since it achieves higher torque densities amongst other magnetic gear configurations. The magnetic field is generated by permanent magnets mounted on the two rotors and a modulator between them. The modulator consists of ferromagnetic segments that are typically encased in a resin in order to increase its stiffness without compromising the generated magnetic field. However, due to the development of radial forces, oscillations of the ferromagnetic segments occur, which lead to torque ripples that affect the operation of the coaxial magnetic gear drive in applications where accuracy is required. This work introduces a computationally lightweight analytical 2D model in order to determine the applied radial force on the ferromagnetic segments at each angle of rotation of the two rotors and henceforth calculate the displacement of these segments using FEA. In this way it is possible to assess the variation of the torque (ripple) versus the angle of rotation of the input or output shaft. A parametric investigation examining the influence of the ferromagnetic segment thickness on the resulting torque ripple of a specific drive was carried out illustrating the benefits of the analytical models developed herein.https://www.matec-conferences.org/articles/matecconf/pdf/2022/13/matecconf_pt22_01004.pdfcoaxial magnetic geartorque ripplesanalytical modelmaxwell stress tensor |
| spellingShingle | Tzouganakis Panteleimon Gakos Vasilios Kalligeros Christos Papalexis Christos Tsolakis Antonios Spitas Vasilios Torque ripple investigation in coaxial magnetic gears MATEC Web of Conferences coaxial magnetic gear torque ripples analytical model maxwell stress tensor |
| title | Torque ripple investigation in coaxial magnetic gears |
| title_full | Torque ripple investigation in coaxial magnetic gears |
| title_fullStr | Torque ripple investigation in coaxial magnetic gears |
| title_full_unstemmed | Torque ripple investigation in coaxial magnetic gears |
| title_short | Torque ripple investigation in coaxial magnetic gears |
| title_sort | torque ripple investigation in coaxial magnetic gears |
| topic | coaxial magnetic gear torque ripples analytical model maxwell stress tensor |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2022/13/matecconf_pt22_01004.pdf |
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