Title :
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
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2239341
