Numerical simulation of current distribution in cable-in-conduit conductor for ITER TF coil

Hideki Kajitani, Atsushi Ishiyama, Norikiyo Koizumi, Haruyuki Murakami, Hideo Nakajima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The critical current of a cable-in-conduit conductor (CICC) for an ITER TF coil was measured using the SULTAN test facility. It was found that a non-uniform current distribution was established due to a non-uniform joint resistance. To evaluate the critical current performance accurately, we used a solder-filled joint. To study the effect of this solder-filled joint on the current distribution, we used a lumped circuit model and a distributed circuit model for the conductor and the joint, respectively, and combined the two to develop a new analysis model. This enabled us to solve the distributed circuit equation using only a few iterations, resulting in considerable reduction of the calculation time. Simulation results showed that, although the current distribution was non-uniform due to the ramping current, it improved at the current sharing temperature. This indicated that the solder-filled joint effectively improved the current distribution.

Original languageEnglish
Article number5654549
Pages (from-to)1964-1968
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 2
DOIs
Publication statusPublished - 2011 Jun 1

Keywords

  • CICC
  • Critical current
  • Current distribution
  • Current transfer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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