Magnetic Bearings for Non-static Flywheel Energy Storage Systems (FESS)

Nikolaj Dagnæs-Hansen, Ilmar F. Santos

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Proper dimensioning of magnetic bearings for non-static gimballed FESS is currently hindered by the lack of models that can predict the maximum forces in the bearings. If FESS is to compete with conventional electro-chemical batteries in terms of energy density, the magnetic bearings must be dimensioned optimally for weight and size. Magnetically suspended FESS has been experimentally investigated; however, the methods for theoretically predicting magnetic bearing loads are still limited. This paper presents how to determine such magnetic bearing loads in a gimballed FESS subject to a moving foundation. The predicted forces are compared with measurements from an experimental test bench with good agreement. Furthermore, the maximum forces in a gimballed FESS are compared with maximum forces in a non-gimballed FESS. It was found that the gyroscopic forces in the non-gimballed case quickly become critical making the gimbal mount essential for reducing magnetic bearing loads.
Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Rotor Dynamics (IFToMM 2018)
EditorsKatia Lucchesi Cavalca, Hans Ingo Weber
Volume1
PublisherSpringer
Publication date2018
Pages116-131
ISBN (Print)978-3-319-99261-7
ISBN (Electronic)978-3-319-99262-4
DOIs
Publication statusPublished - 2018
Event10th International Conference on Rotor Dynamics - Rio de Janeiro, Brazil
Duration: 23 Sep 201827 Sep 2018
Conference number: 10

Conference

Conference10th International Conference on Rotor Dynamics
Number10
CountryBrazil
CityRio de Janeiro
Period23/09/201827/09/2018
SeriesMechanisms and Machine Science
Volume60
ISSN2211-0984

Keywords

  • Active magnetic bearings
  • Permanent magnet bearings
  • Flywheel energy storage system

Cite this

Dagnæs-Hansen, N., & Santos, I. F. (2018). Magnetic Bearings for Non-static Flywheel Energy Storage Systems (FESS). In K. Lucchesi Cavalca, & H. Ingo Weber (Eds.), Proceedings of the 10th International Conference on Rotor Dynamics (IFToMM 2018) (Vol. 1, pp. 116-131). Springer. Mechanisms and Machine Science, Vol.. 60 https://doi.org/10.1007/978-3-319-99262-4_9