Persistent current switch for HTS superconducting magnets: Design, control strategy, and test results

Chao Li; Jianzhao Geng; Boyang Shen; Xinru Li; Jamie Gawith; Jun Ma; Jiabin Yang; T. A. Coombs

doi:10.1109/TASC.2018.2889463

Persistent current switch for HTS superconducting magnets: Design, control strategy, and test results

Chao Li, Jianzhao Geng, Boyang Shen, Xinru Li, Jamie Gawith, Jun Ma, Jiabin Yang, T. A. Coombs

Department of Electronic & Electrical Engineering

University of Cambridge

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

33 Citations (SciVal)

Abstract

High temperature superconductor (HTS) is becoming more and more attractive for the application in high field magnets, which can be utilized in the magnetic resonance imaging (MRI) and rotating machines. To charge the HTS magnets and operate them in persistent current mode, a persistent current switch (PCS) is very necessary. This paper will focus on how to build a fast persistent current switch controlled by ac magnetic field. The PCS can present a large resistance rapidly compared with conventional PCS and recover to zero-resistance in a short recovery time. Impacting factors and strategy to control the proposed PCS are discussed. An experimental system is built and tests are carried out to verify the practicality of the proposed PCS.

Original language	English
Article number	8587205
Journal	IEEE Transactions on Applied Superconductivity
Volume	29
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2018.2889463
Publication status	Published - 23 Dec 2018

Bibliographical note

Funding Information:
Manuscript received August 8, 2018; accepted December 20, 2018. Date of publication December 24, 2018; date of current version January 31, 2019. This work was supported by the CSC Cambridge Trust. The work of C. Li was supported by Cambridge Trust under Cambridge CSC Scholarship 201506250125. (Corresponding author: Chao Li.) The authors are with Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, U.K. (e-mail:, [email protected]).

Funding

Manuscript received August 8, 2018; accepted December 20, 2018. Date of publication December 24, 2018; date of current version January 31, 2019. This work was supported by the CSC Cambridge Trust. The work of C. Li was supported by Cambridge Trust under Cambridge CSC Scholarship 201506250125. (Corresponding author: Chao Li.) The authors are with Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, U.K. (e-mail:, [email protected]).

Keywords

dynamic resistance
HTS tape
Persistent current switch
uniform magnetic field

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2018.2889463

Cite this

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abstract = "High temperature superconductor (HTS) is becoming more and more attractive for the application in high field magnets, which can be utilized in the magnetic resonance imaging (MRI) and rotating machines. To charge the HTS magnets and operate them in persistent current mode, a persistent current switch (PCS) is very necessary. This paper will focus on how to build a fast persistent current switch controlled by ac magnetic field. The PCS can present a large resistance rapidly compared with conventional PCS and recover to zero-resistance in a short recovery time. Impacting factors and strategy to control the proposed PCS are discussed. An experimental system is built and tests are carried out to verify the practicality of the proposed PCS.",

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AU - Gawith, Jamie

AU - Ma, Jun

AU - Yang, Jiabin

AU - Coombs, T. A.

N1 - Funding Information: Manuscript received August 8, 2018; accepted December 20, 2018. Date of publication December 24, 2018; date of current version January 31, 2019. This work was supported by the CSC Cambridge Trust. The work of C. Li was supported by Cambridge Trust under Cambridge CSC Scholarship 201506250125. (Corresponding author: Chao Li.) The authors are with Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, U.K. (e-mail:, [email protected]).

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Persistent current switch for HTS superconducting magnets: Design, control strategy, and test results

Abstract

Bibliographical note

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Keywords

ASJC Scopus subject areas

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