AC Loss Estimation of HTS Armature Windings for Electric Machines

Author

Min Zhang ; Chudy, Michal ; Wei Wang ; Yiran Chen ; Zhen Huang ; Zhaoyang Zhong ; Weijia Yuan ; Kvitkovic, Jozef ; Pamidi, Sastry V. ; Coombs, T.A.

Author_Institution

Eng. Dept., Cambridge Univ., Cambridge, UK

Volume

23

Issue

3

fYear

2013

fDate

Jun-13

Firstpage

5900604

Lastpage

5900604

Abstract

This paper studies 2G high-temperature superconducting (HTS) coils for electric machine armature windings, using finite element method (FEM) and H formulation. A FEM model for 2G HTS racetrack coil is built in COMSOL, and is well validated by comparing calculated ac loss with experimental measurements. The FEM model is used to calculate transport loss in HTS armature windings, using air-cored design. We find that distributed winding used in conventional machine design is an effective way to reduce transport loss of HTS armature winding, in terms of air-cored design. Based on our study, we give suggestions on the design of low loss HTS armature winding.

Keywords

AC machines; finite element analysis; high-temperature superconductors; machine windings; superconducting coils; superconducting machines; 2G high-temperature superconducting racetrack coil; AC loss estimation; COMSOL; H formulation; air-cored design; distributed winding; electric machine armature windings; finite element method model; low loss high-temperature superconducting armature winding; machine design; transport loss; Coils; Finite element methods; Loading; Loss measurement; Windings; Yttrium barium copper oxide; AC loss; YBCO; high-temperature superconducting (HTS); machine;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2013.2239341

Filename

6409416