AC loss estimation of HTS armature windings for electric machines

Min Zhang, M. Chudy, Wei Wang, Yiran Chen, Zhen Huang, Zhaoyang Zhong, Weijia Yuan, J. Kvitkovic, S. V. Pamidi, T. A. Coombs

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28 Citations (Scopus)


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.

Original languageEnglish
Article number6409416
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 18 Mar 2013


  • AC loss
  • high-temperature superconducting (HTS)
  • machine
  • YBCO
  • AC machines
  • finite element analysis
  • machine windings
  • superconducting coils
  • loss measurement
  • yttrium barium copper oxide

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