Analysis of current distribution in multi-laminated HTS tape conductor for double pancake coil of SMES

Takataro Hamajima, Naoki Atomura, Yuta Chiba, Tsuyoshi Yagai, Makoto Tsuda, Koji Shikimachi, Naoki Hirano, Shigeo Nagaya

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A multi-laminated HTS tape conductor has been recently developedto fabricate large double pancake coils.If the HTS tapes are simply laminated to form the conductor, the current distribution in the laminated tape conductor of the coil is unbalanced because of different inductances of all tapes. It is very important to analyze current distributions in the multi-laminated tape conductor used for the double pancake coil for SMES. In this paper, we analyze the current distribution in the tape conductor by using electrical circuit model, and then discuss how to obtain the homogeneous current distribution. One way is to transpose the tape position at both ends of pancake coil so as to arrange the tapes symmetrically. However, this method is not perfectly geometrical symmetry for more than 3 laminated tapes in the conductor. We propose new method to obtain homogeneous current distribution by adjusting gaps between HTS tapes in the conductor. Finally we numerically demonstrate the homogeneous current distribution in the 4-laminated tapes with inserting additional thickness among tapes.

Original languageEnglish
Article number5643129
Pages (from-to)1371-1374
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 2
DOIs
Publication statusPublished - 2011 Jun

Keywords

  • Homogeneous current distribution
  • Multi-laminated HTS tapes
  • Pancake coil
  • SMES
  • Transposition

ASJC Scopus subject areas

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

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