Title :
Axial stiffness of journal bearings in zero-field and field-cooled modes
Author :
Rastogi, Amit ; Coombs, T.A. ; Campbell, A.M. ; Hall, R.
Author_Institution :
Dept. of Eng., Univ. of Cambridge, UK
fDate :
6/1/2005 12:00:00 AM
Abstract :
Superconducting journal bearings have been investigated for use in flywheel systems. We report on the zero-field cooled and field-cooled stiffness of these bearings. They are made up of radial magnet rings with alternating polarities, a pole pitch of 11 mm and a surface field of 0.1 T. Field-cooled stiffness of the journal bearings increased four times over the zero-field-cooled stiffness.
Keywords :
flywheels; machine bearings; magnetic bearings; superconducting machines; 0.1 T; 11 mm; alternating polarities; axial stiffness; field-cooled stiffness; flywheel system; magnetic levitation; pole pitch; radial magnet rings; superconducting devices; superconducting journal bearings; zero-field cooled stiffness; Energy storage; Flywheels; Magnetic levitation; Rotors; Shafts; Superconducting devices; Superconducting magnetic energy storage; Superconductivity; Temperature; Yttrium barium copper oxide; Flywheel systems; journal bearings; magnetic levitation; superconducting devices;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849621
