Power dissipation in HTS coated conductor coils under the simultaneous action of AC and DC currents and fields

Boyang Shen, Chao Li, Jianzhao Geng, Xiuchang Zhang, James Gawith, Jun Ma, Yingzhen Liu, Francesco Grilli, T. A. Coombs

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90 Citations (SciVal)


This paper presents a comprehensive alternating current (AC) loss study of a circular high temperature superconductor (HTS) coated conductor coil. The AC losses from a circular double pancake coil were measured using the electrical method. A 2D axisymmetric H -formulation model using the FEM package in COMSOL Multiphysics has been established to match the circular geometry of the coil used in the experiment. Three scenarios have been analysed: Scenario 1 with AC transport current and DC magnetic field (experiment and simulation); Scenario 2 with DC transport current and AC magnetic field (simulation); and Scenario 3 with AC transport current and AC magnetic field (simulation and experimental data support). The angular dependence analysis on the coil under a magnetic field with different orientation angle θ has been carried out for all three scenarios. For Scenario 3, the effect of the relative phase difference Δ between the AC current and the AC field on the total AC loss of the coil has been investigated. In summary, a current/field/angle/phase dependent AC loss ( I , B , θ, Δ) study of a circular HTS coil has been carried out. The obtained results provide useful indications for the future design and research of HTS AC systems.

Original languageEnglish
Article number075005
JournalSuperconductor Science and Technology
Issue number7
Publication statusPublished - 7 Jun 2018

Bibliographical note

Funding Information:
The experimental work was carried out with the help of the Electrical Engineering Division, Department of Engineering, University of Cambridge. The authors are particularly grateful to Mr John Grundy and other members of staff for their crucial assistance. Some of the authors are research students, and they would like to express gratitude to the China Scholarship Council (CSC) for their scholarships and support for overseas study.

Publisher Copyright:
© 2018 IOP Publishing Ltd.


  • AC losses
  • angular dependence
  • HTS coils

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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