Quench development and ultimate normal zone propagation “velocity” in superconductors under fast current change

Author

Vysotsky, V.S. ; Ilyin, Yu.A. ; Rakhmanov, A.L. ; Funaki, K. ; Takeo, M. ; Shimohata, K. ; Nakamura, S. ; Yamada, M. ; Hasegawa, K.

Author_Institution

Kurchatov (I.V.) Inst. of Atomic Energy, Moscow, Russia

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2118

Lastpage

2121

Abstract

Normal zone evolution or quench development is a major feature for resistive type fault current limiters design. We studied quench development under fast current rise in several samples of multifilament superconducting wires with a highly resistive matrix. At very fast current rise rates simultaneous quench of the entire sample takes place. It may be described by a characteristic time of a quench. We found that at the highest current rise rate this time is the same for samples with different lengths and cooling conditions made from the same wire. Apparent normal zone “velocity” determined by this time is an ultimate velocity for a given length of a superconducting wire of certain type. We present experimental data about quench development under fast current rise and provide the theoretical estimations of quench parameters

Keywords

fault current limiters; multifilamentary superconductors; superconducting devices; cooling conditions; fast current change; highly resistive matrix; multifilament superconducting wires; normal zone evolution; quench development; resistive type fault current limiters; superconductors; ultimate normal zone propagation velocity; very fast current rise rates; Cooling; Estimation theory; Fault current limiters; Lead; Multifilamentary superconductors; Parameter estimation; Scattering; Superconducting filaments and wires; Superconductivity; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920275

Filename

920275