Influence of Transport Current Distribution on AC Transport Current Loss Measurement in an Assembled Conductor

Author

Ogawa, Jun ; Fukui, Satoshi ; Oka, Tetsuo ; Sato, Takao ; Shinkai, Kazuya ; Koyama, Takashi ; Ito, Takahiro

Author_Institution

Grad. Sch. of Sci. & Technol., Niigata Univ., Niigata, Japan

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1300

Lastpage

1303

Abstract

We investigated the validity of AC transport current loss measurement in a high temperature superconducting (HTS) assembled conductor using the four-terminal method. We tested the effect of different arrangements, transport current direction, and transport current distribution in the assembled conductor. Neither the arrangement nor direction of the transport current affects the accuracy of the AC transport current measurement. When transport current distribution in an assembled conductor is unbalanced, it is possible to deduce the loss by the addition of the multiple of the current and voltage from the potential lead loops in each tape. If the transport currents in each HTS tape of the assembled conductor are not uniform and only transport current of the assembled conductor is measured, the AC transport current loss is not estimated exactly.

Keywords

conductors (electric); current distribution; electric current measurement; high-temperature superconductors; lead; superconducting tapes; AC transport current loss measurement; four-terminal method; high temperature superconducting assembled conductor; potential lead loops; transport current direction; transport current distribution; AC transport current loss measurement; HTS assembled conductor; spiral potential lead loop;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2041641

Filename

5433294