Heat generation by vibration and coil rigidity of Bi2223 pancake coil

Author

Tanaka, Hideki ; Furuse, Mitsuho ; Umeda, Masaichi

Author_Institution

National Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

859

Lastpage

862

Abstract

AC losses of HTS pancake coil for the superconducting fault current limiter were investigated. The measured AC losses of pancake coil were found to be primarily heat generation by vibration. Therefore, the rigidity of coil was improved by epoxy impregnation, resulting in a 50% reduction in AC losses. Therefore, the total AC losses of HTS pancake coil are dependent on the rigidity of coil. In the present paper, the relationship between resonance frequency and heat generation by vibration is shown.

Keywords

bismuth compounds; fault current limiters; high-temperature superconductors; loss measurement; superconducting coils; vibrations; AC losses; Bi2223 pancake coil; BiPb₂Sr₂Ca₂Cu₃O₁₀; HTS pancake coil; coil rigidity; epoxy impregnation; heat generation; resonance frequency; superconducting fault current limiter; vibration; AC generators; High temperature superconductors; Loss measurement; Magnetic losses; Magnetic resonance; Magnetization; Resonant frequency; Superconducting coils; Superconducting magnets; Vibration measurement; AC loss; HTS pancake coil; resonance frequency; rigidity of coil;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.830302

Filename

1324928