Optimized configurations of autostable superconducting magnetic bearings for practical applications

Author

Schöchlin, Anja ; Ritter, Tobias ; Bornemann, H.J.

Author_Institution

Forschungszentrum Karlsruhe GmbH, Germany

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

4217

Lastpage

4219

Abstract

In order to establish an optimized bearing design for a flywheel for energy storage, we have studied model bearing configurations involving bulk YBCO pellets and double-dipole magnet configurations. We were interested to see what the correlation is between the maximum attainable levitation force, measured for a typical bearing gap of 3 mm, and the separation between the magnetic poles. Equal polarity (north-north) and alternative polarity (north-south) configurations were investigated. The maximum levitation force was obtained with the alternate polarity arrangement for a separation between the magnetic poles of 6 mm. It represents an increase of 19% compared to a nonoptimized configuration. Our experiments demonstrate that configurations of superconducting magnetic bearings can be optimized to obtain better levitation properties

Keywords

barium compounds; flywheels; high-temperature superconductors; machine bearings; magnetic levitation; superconducting devices; superconducting magnets; yttrium compounds; YBa₂Cu₃O₇; alternative polarity; autostable superconducting magnetic bearings; bearing gap; bulk YBCO pellets; double-dipole magnet configurations; energy storage; equal polarity; flywheel; levitation force; magnetic poles separation; Design optimization; Energy storage; Flywheels; Force measurement; Magnetic levitation; Magnetic properties; Magnetic separation; Superconducting magnetic energy storage; Superconducting magnets; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489931

Filename

489931