Title :
Axial and journal bearings for superconducting flywheel systems
Author :
Rastogi, Amit ; Alonso, David Ruiz ; Coombs, T.A. ; Campbell, A.M.
Author_Institution :
Dept. of Eng., Univ. of Cambridge, UK
fDate :
6/1/2003 12:00:00 AM
Abstract :
Axial and journal bearings have been investigated for use in superconducting flywheel systems. Our test rig comprises of an Evershed type magnetic bearing used to levitate a 35 kg rotor. The stabilizing forces are provided by superconducting axial and journal bearings. In this study we focus on the vertical stiffness measurements and explore the use of journal bearings. The journal bearing consists of radial magnets with alternating polarities. Our results indicate that this type of journal bearing can effectively stabilize the rotor. Spin-down test shows a linear behavior.
Keywords :
flywheels; magnetic bearings; rotors; superconducting devices; 35 kg; Evershed magnetic bearing; axial bearing; journal bearing; magnetic levitation; rotor stability; spin-down test; superconducting flywheel energy storage system; vertical stiffness; Energy storage; Flywheels; Magnetic fields; Magnetic levitation; Rotors; Stability; Superconducting devices; Superconducting magnets; Testing; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813062
