Three-dimensional vibration of the rotor in the HTSC-permanent magnet flywheel system

Author

Ohashi, S. ; Hirane, Y. ; Hikihara, T.

Author_Institution

Kansai Univ., Osaka, Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

4037

Lastpage

4039

Abstract

The three dimensional vibration of the rotor in the HTSC-permanent magnet flywheel system is studied. The magnetic levitation using pinning force of the HTSC bulk material has an advantage to achieve stable levitation without control. However the transient characteristics of the levitation is not clearly understood. We have developed the flywheel system which can revolve up to 12,000 rpm, and the three dimensional vibration of the rotor are measured with laser displacement sensors. The vibration of the rotor around the mechanical resonance frequency is investigated. The rotor shows both columnar and conical behavior in the mechanical resonant state

Keywords

flux pinning; flywheels; high-temperature superconductors; magnetic levitation; permanent magnets; rotors; vibrations; HTSC-permanent magnet flywheel; bulk superconductor; laser displacement sensor; magnetic levitation; mechanical resonance; pinning force; rotor; three-dimensional vibration; transient characteristics; Displacement measurement; Flywheels; Force control; Magnetic levitation; Magnetic materials; Mechanical sensors; Optical materials; Resonance; Sensor phenomena and characterization; Vibration measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800747

Filename

800747