Conceptual design of HTS coil for SMES using YBCO coated conductor

Kohei Higashikawa, Taketsune Nakamura, Koji Shikimachi, Naoki Hirano, Shigeo Nagaya, Takanobu Kiss, Masayoshi Inoue

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


High Tc superconducting (HTS) toroidal coil using YBCO coated conductor is designed for 70 MJ class superconducting magnetic energy storage (SMES) for power system control. Its configuration and shape are optimized by means of genetic algorithm (GA) to minimize the required length of the conductor. The optimization is performed for two kinds of constrains, i.e., maximum electric field or flux flow loss of the coil, which are calculated by means of finite element method (FEM). The FEM analysis considers quantitative current density (J)-electric field (E) expressions based on percolation transition model. It is shown that the great transport performance against magnetic field of YBCO coated conductor can realize a very compact SMES coil compared with an existing Nb-Ti's one.

Original languageEnglish
Pages (from-to)1990-1993
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - Jun 2007

All Science Journal Classification (ASJC) codes

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


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