Flux flow resistance in Bi2223 generated by pulse currents

Author

Mutsuura, Keita ; Shimizu, Hirotaka ; Yokomizu, Yasunobu ; Matsumura, Toshiro

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Nagoya Univ., Japan

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

2003

Lastpage

2006

Abstract

We have proposed a current limiting element using the flux flow resistance in a high temperature superconductor (HTS) for a pulse over-current such as a magnetizing inrush current in a transformer. We experimentally investigated the generation process of flux flow resistance in a Bi2223 bulk with an inrush current. The voltage-current density characteristics and their dependence on the joule heat generated in the Bi2223 bulk were measured. Comparing the results with the characteristics for the ac over-current, we made it clear that the both have almost the same characteristics.

Keywords

bismuth compounds; calcium compounds; fault current limiters; flux flow; high-temperature superconductors; lead compounds; overcurrent protection; strontium compounds; superconducting devices; Bi₂PbSr₂Ca₂Cu₃O₁₀; flux flow resistance; high temperature superconductor; inrush current; joule heat; pulse currents; pulse over-current; transformer; voltage-current density characteristics; Character generation; Current limiters; Density measurement; Electrical resistance measurement; High temperature superconductors; Magnetic flux; Pulse generation; Pulse transformers; Superconducting magnets; Surges; Bi2223 bulk; flux flow resistance; inrush current; voltage-current density characteristics;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.849437

Filename

1440051