Current distribution measurement in YBCO thin film for a superconducting fault current limiter

Current distribution in the superconducting film for a resistive fault current limiter is important, because it influences AC loss and a uniformity of S/N transition. The lateral current distribution of the film was reconstructed from the magnetic field distribution which is measured by multiple Hal...

Full description

Saved in:
Bibliographic Details
Published in:Cryogenics (Guildford) 2003-02, Vol.43 (2), p.111-116
Main Authors: Shimohata, Kenji, Yokoyama, Shoichi, Inaguchi, Takashi, Nakamura, Shiro, Ozawa, Yasuo
Format: Article
Language:English
Subjects:
Applied sciences
Current distribution
Electronics
Exact sciences and technology
Fault current limiter
HTS film
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Current distribution in the superconducting film for a resistive fault current limiter is important, because it influences AC loss and a uniformity of S/N transition. The lateral current distribution of the film was reconstructed from the magnetic field distribution which is measured by multiple Hall probes. The following results were obtained. (1) Non-uniform current distribution in the superconducting film was observed when the current was less than 1.3 times of critical current ( I c). (2) The current in a superconducting film was uniform when the current was much higher than I c. The current can be considered uniform when the film works as a fault current limiter, because the S/N transition starts about twice of I c. (3) The validity of the measurement was verified by the comparison with the electric circuit simulation.
ISSN:0011-2275
1879-2235
DOI:10.1016/S0011-2275(03)00048-1