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

doi:10.1088/1361-6668/aac294

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

Department of Electronic & Electrical Engineering

Research output: Contribution to journal › Article › peer-review

99 Citations (SciVal)

Abstract

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 language	English
Article number	075005
Journal	Superconductor Science and Technology
Volume	31
Issue number	7
DOIs	https://doi.org/10.1088/1361-6668/aac294
Publication status	Published - 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.

Funding

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.

Keywords

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

Access to Document

10.1088/1361-6668/aac294

Cite this

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

abstract = "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.",

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author = "Boyang Shen and Chao Li and Jianzhao Geng and Xiuchang Zhang and James Gawith and Jun Ma and Yingzhen Liu and Francesco Grilli and Coombs, {T. A.}",

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: {\textcopyright} 2018 IOP Publishing Ltd.",

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AU - Shen, Boyang

AU - Li, Chao

AU - Geng, Jianzhao

AU - Zhang, Xiuchang

AU - Gawith, James

AU - Ma, Jun

AU - Liu, Yingzhen

AU - Grilli, Francesco

AU - Coombs, T. A.

N1 - 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.

PY - 2018/6/7

Y1 - 2018/6/7

N2 - 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.

AB - 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.

KW - AC losses

KW - angular dependence

KW - HTS coils

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

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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