A superconducting thrust-bearing system for an energy storage flywheel

T. A. Coombs; A. Cansiz; A. M. Campbell

doi:10.1088/0953-2048/15/5/338

A superconducting thrust-bearing system for an energy storage flywheel

T. A. Coombs^*
, A. Cansiz
, A. M. Campbell

^*Corresponding author for this work

University of Cambridge

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

A combination of permanent magnets and superconductors was used to construct a thrust-bearing system for an energy storage flywheel. The stability of the overall system was tested over a range of levitation heights at rotation speeds of up to around 12 Hz. A sharp resonance was found to occur at a low speed indicating very low damping. Results showed that the losses comprised of eddy current losses and were not purely hysteric. A modeling system to predict the forces developed in the bearings in both axial and radial directions was also developed.

Original language	English
Pages (from-to)	831-835
Number of pages	5
Journal	Superconductor Science and Technology
Volume	15
Issue number	5
DOIs	https://doi.org/10.1088/0953-2048/15/5/338
Publication status	Published - May 2002
Externally published	Yes

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AB - A combination of permanent magnets and superconductors was used to construct a thrust-bearing system for an energy storage flywheel. The stability of the overall system was tested over a range of levitation heights at rotation speeds of up to around 12 Hz. A sharp resonance was found to occur at a low speed indicating very low damping. Results showed that the losses comprised of eddy current losses and were not purely hysteric. A modeling system to predict the forces developed in the bearings in both axial and radial directions was also developed.

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A superconducting thrust-bearing system for an energy storage flywheel

Abstract

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