Study on optimal design of high temperature superconducting coil based on AC loss minimization

Satoshi Fukui, Kei Ohsugi, Takeru Nishijyo, Jun Ogawa, Tetsuo Oka, Mitsugi Yamaguchi, Takao Sato, Mitsuho Furuse, Tomoaki Takao, Osami Tsukamoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper presents an optimal design method of winding cross section of high temperature superconducting coils wound by Bi2223/Ag tape based on AC loss minimization. We try to optimize the winding cross section starting from the conventional HTS coil with the rectangular cross section to minimize the AC loss. An example of the optimal cross section coil is presented. The result shows that the AC loss in the optimized coil is significantly reduced and the critical current of the optimized coil is increased compared with the rectangle cross section coil. It is verified that our optimal design method is effective to reduce the AC loss in the HTS coil. The disadvantageous points of the optimized coil are also discussed.

Original languageEnglish
Article number4510854
Pages (from-to)1366-1369
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2008 Jun
Externally publishedYes


  • AC loss
  • HTS coil
  • Optimal design

ASJC Scopus subject areas

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


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