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...
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Autor*in:	Tzouganakis Panteleimon [verfasserIn] Gakos Vasilios [verfasserIn] Kalligeros Christos [verfasserIn] Papalexis Christos [verfasserIn] Tsolakis Antonios [verfasserIn] Spitas Vasilios [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Französisch

Erschienen:	2022

Schlagwörter:	coaxial magnetic gear torque ripples analytical model maxwell stress tensor

Übergeordnetes Werk:	In: MATEC Web of Conferences - EDP Sciences, 2013, 366, p 01004(2022)
Übergeordnetes Werk:	volume:366, p 01004 ; year:2022

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1051/matecconf/202236601004

Katalog-ID:	DOAJ086322648

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callnumber-first	T - Technology
author	Tzouganakis Panteleimon
spellingShingle	Tzouganakis Panteleimon misc TA1-2040 misc coaxial magnetic gear misc torque ripples misc analytical model misc maxwell stress tensor misc Engineering (General). Civil engineering (General) Torque ripple investigation in coaxial magnetic gears
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topic_title	TA1-2040 Torque ripple investigation in coaxial magnetic gears coaxial magnetic gear torque ripples analytical model maxwell stress tensor
topic	misc TA1-2040 misc coaxial magnetic gear misc torque ripples misc analytical model misc maxwell stress tensor misc Engineering (General). Civil engineering (General)
topic_unstemmed	misc TA1-2040 misc coaxial magnetic gear misc torque ripples misc analytical model misc maxwell stress tensor misc Engineering (General). Civil engineering (General)
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title	Torque ripple investigation in coaxial magnetic gears
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title_full	Torque ripple investigation in coaxial magnetic gears
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title_sort	torque ripple investigation in coaxial magnetic gears
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title_auth	Torque ripple investigation in coaxial magnetic gears
abstract	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.
abstractGer	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.
abstract_unstemmed	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.
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title_short	Torque ripple investigation in coaxial magnetic gears
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