Study on cause of quenching at the joint between multifilamentary superconducting cable and normal conducting cable using 3D FEM

Author

Takahashi, N. ; Nakata, T. ; Fujii, Y. ; Funaki, K. ; Takeo, M.

Author_Institution

Dept. of Electr. Eng., Okayama Univ., Japan

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

2826

Lastpage

2828

Abstract

Investigates the cause of quenching at the joint between a multifilamentary superconducting cable and a normal conducting cable. The 3D current distribution is analyzed. It is found that the cause of quenching is the extreme concentration of current in the joint due to the pronounced skin effect at liquid helium temperature. The mechanism of the concentration of current which is affected by the twist pitch and skin depth is also clarified quantitatively by numerical analysis

Keywords

cable jointing; finite element analysis; quenching (thermal); skin effect; superconducting cables; 3D FEM; 3D current distribution; conducting cable; current concentration; extreme concentration; liquid helium temperature; multifilamentary superconducting cable; numerical analysis; quenching; skin depth; skin effect; twist pitch; Conductivity; Conductors; Current distribution; Eddy currents; Joining processes; Magnetic analysis; Multifilamentary superconductors; Power cables; Superconducting cables; Superconducting magnets;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179640

Filename

179640