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Rotation analysis on large complex superconducting cables based on numerical modeling and experiments
- Source :
- Superconductor science and technology, 31(2):025001. IOP Publishing Ltd.
- Publication Year :
- 2018
-
Abstract
- The conductors used in large fusion reactors, e.g. ITER, CFETR and DEMO, are made of cable-in-conduit conductor (CICC) with large diameters up to about 50 mm. The superconducting and copper strands are cabled around a central spiral and then wrapped with stainless-steel tape of 0.1 mm thickness. The cable is then inserted into a jacket under tensile force that increases with the length of insertion. Because the cables are long and with a large diameter, the insertion force could reach values of about 40 kN. The large tensile force could lead to significant rotation forces. This may lead to an increase of the twist pitch, especially for the final one. Understanding the twist pitch variation is very important; in particular, the twist pitch of a cable inside a CICC strongly affects its properties, especially for Nb3Sn conductors. In this paper, a simplified numerical model was used to analyze the cable rotation, including material properties, cabling tension as well as wrap tension. Several rotation experiments with tensile force have been performed to verify the numerical results for CFETR CSMC cables. The results show that the numerical analysis is consistent with the experiments and provides the optimal cabling conditions for large superconducting cables.
- Subjects :
- Materials science
Performance degradation
Tension (physics)
Numerical analysis
Metals and Alloys
Mechanics
Tensile experiment
Cable rotation
Fusion power
Condensed Matter Physics
Rotation
01 natural sciences
010305 fluids & plasmas
Conductor
Numerical model
0103 physical sciences
Materials Chemistry
Ceramics and Composites
Statistical physics
Electrical and Electronic Engineering
010306 general physics
Material properties
Electrical conductor
Spiral
Subjects
Details
- Language :
- English
- ISSN :
- 09532048
- Database :
- OpenAIRE
- Journal :
- Superconductor science and technology, 31(2):025001. IOP Publishing Ltd.
- Accession number :
- edsair.doi.dedup.....e82c9212c04a344963f9f0a35e434feb