Conceptual Design of HTS Coil for SMES Using YBCO Coated Conductor

Author

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

Author_Institution

Kyoto Univ., Kyoto

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

1990

Lastpage

1993

Abstract

High T_c 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.

Keywords

barium compounds; finite element analysis; genetic algorithms; high-temperature superconductors; superconducting coils; superconducting magnet energy storage; yttrium compounds; FEM analysis; YBCO coated conductor; YBa₂Cu₃O₇; energy 70 MJ; finite element method; flux flow loss; genetic algorithm; high-T_c superconducting toroidal coil; percolation transition model; power system control; quantitative current density-electric field expressions; superconducting magnetic energy storage; Conductors; Constraint optimization; Genetic algorithms; High temperature superconductors; Power system control; Samarium; Shape; Superconducting coils; Superconducting magnetic energy storage; Yttrium barium copper oxide; Finite element method; SMES; YBCO coated conductor; genetic algorithm; optimal design;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.898947

Filename

4277447