Title :
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
fDate :
6/1/2004 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.830302
