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

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

2165

Lastpage

2168

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.813025

Filename

1212048