Title :
Effect of a passive magnetic damper in a flywheel system with a hybrid superconductor bearing set
Author :
Sung, Tae-Hyun ; Han, Young-Hee ; Lee, Jun-Sung ; Han, Sang-Chul ; Jeong, Nyeon-Ho ; Oh, Kwang-Seok ; Park, Byung-Sam ; Oh, Je-Myung
Author_Institution :
Korea Electr. Power Res. Inst., Korea Electr. Power Corp., Daejon, South Korea
fDate :
6/1/2003 12:00:00 AM
Abstract :
A flywheel energy storage system with a hybrid bearing set was designed. The hybrid bearing system consisted of a superconductor bearing and a permanent magnetic bearing. The flywheel was suspended by the permanent magnetic bearing and stabilized by the superconductor bearing. The range of stable levitation was experimentally determined for the vertical magnetic force. A new type of damper designed to provide essential damping for the permanent magnetic bearing was tested by an impact test. The damper using eddy current loss showed good performance.
Keywords :
damping; eddy current losses; flywheels; magnetic bearings; permanent magnets; rotors; superconducting devices; eddy current loss; flywheel energy storage system; hybrid bearing set; impact test; permanent magnetic bearing; rotor dynamic analysis; stable levitation; superconductor bearing; superconductor flywheel; vertical magnetic force; Damping; Eddy currents; Energy storage; Flywheels; Magnetic forces; Magnetic levitation; Shock absorbers; Superconducting magnetic energy storage; Superconducting magnets; Testing;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813025
