A coaxial magnetic gearbox with magnetic levitation capabilities

Ayman Abdel-Khalik, A. Massoud, A. Elserougi, Shehab Ahmed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Magnetic gearboxes (MGBs) are now a powerful alternative to their conventional mechanical counterparts in terms of reduced maintenance requirements, improved reliability, tolerance to mechanical inaccuracies, and inherent overload protection. MGBs have been proposed for numerous applications especially compact harsh environments subjected to severe shocks and vibrations. MGB designed with high gear ratio for only one transmission stage is an appropriate candidate for high speed applications. In this paper, the conventional planetary magnetic gearbox is equipped with a three-phase winding to provide additional magnetic levitation capabilities besides torque transmission. This can be tackled by adding a three-phase winding in the space between the ferromagnetic pieces. The current in this additional winding is controlled to provide decoupled axial forces irrespective to the transmitted mechanical power. This feature is important to reduce the mechanical losses especially for high speed rotor and can be a viable method for vibration suppression.

Original languageEnglish
Title of host publicationProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
Pages542-548
Number of pages7
DOIs
Publication statusPublished - 2012
Event2012 20th International Conference on Electrical Machines, ICEM 2012 - Marseille, France
Duration: 2 Sep 20125 Sep 2012

Other

Other2012 20th International Conference on Electrical Machines, ICEM 2012
CountryFrance
CityMarseille
Period2/9/125/9/12

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Keywords

  • AC machines
  • bearingless machines
  • electric machines
  • finite elements
  • Gearbox
  • magnetic planetary gear
  • permanent magnets
  • speed reduction ratio

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Abdel-Khalik, A., Massoud, A., Elserougi, A., & Ahmed, S. (2012). A coaxial magnetic gearbox with magnetic levitation capabilities. In Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012 (pp. 542-548). [6349922] https://doi.org/10.1109/ICElMach.2012.6349922