Coil Optimization for High Temperature Superconductor Machines

Author

Mijatovic, N. ; Jensen, B.B. ; Abrahamsen, A.B. ; Zermeno, V.M.R. ; Træholt, C. ; Pedersen, N.F.

Author_Institution

Dept. of Electr. Eng., Tech. Univ. of Denmark, Lyngby, Denmark

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1136

Lastpage

1140

Abstract

This paper presents topology optimization of HTS racetrack coils for large HTS synchronous machines. The topology optimization is used to acquire optimal coil designs for the excitation system of 3 T HTS machines. Several tapes are evaluated and the optimization results are discussed. The optimization algorithm is formulated to minimize the cost for the coils wound with one type of HTS as well as multiple HTS types. It could also be used to minimize other parameters, e.g. space required for the coils. The results are inherently highly dependent on the HTS properties, which at 20 K seem to be in favor of the 1 G tape. The maximal HTS savings achieved allowing multiple current supplies in the excitation system are investigated and estimated to be in the range of 50% for highly nonlinear J-B dependence HTS tapes.

Keywords

high-temperature superconductors; optimisation; superconducting coils; superconducting machines; superconducting tapes; synchronous machines; HTS racetrack coil; HTS synchronous machine; coil optimization; cost minimization; excitation system; high temperature superconductor machines; nonlinear J-B dependence HTS tape; optimal coil design; superconducting tape; topology optimization; Air gaps; Coils; High temperature superconductors; Optimization; Topology; Windings; HTS coil optimization; HTS machines; topology optimization;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2094171

Filename

5677620