Title :
Electrical and Mechanical Properties of Strands in Superconducting Triplets
Author :
Nakamura, Kazuya ; Takao, Tomoaki ; Nishimura, Arata
Author_Institution :
Sophia Univ., Tokyo
fDate :
6/1/2006 12:00:00 AM
Abstract :
Contact resistance on strands is an important parameter for characterizing stability of cable-in-conduit conductors. We prepared triplets made of three strands with four different twist pitches (25, 50, 65 mm and untwisted). The electrical and mechanical properties of the strands were measured, after cycling 10 times with a peak force of 667 N/m. The contact area between the strands could be precisely estimated, and then the surface resistance was evaluated. As a result, the contact resistance and the surface resistance between the strands depended on the twist pitches of the wires. The results become fundamental data to simulate an electric circuit model consisting of more than one sub-cable, and also to estimate the inter-coupling losses in the cables
Keywords :
contact resistance; electric conduits; losses; superconducting cables; superconducting coils; surface resistance; cable-in-conduit conductor; contact resistance; coupling loss; electric circuit simulation model; electrical properties; mechanical properties; superconducting triplet; surface resistance; twist pitch; wires; Conductors; Contact resistance; Electric resistance; Electrical resistance measurement; Force measurement; Mechanical factors; Mechanical variables measurement; Stability; Superconducting cables; Surface resistance; Cable-in-conduit superconductor; contact resistance; coupling loss; surface resistance;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.869641
