An HTS power switch using YBCO thin film controlled by AC magnetic field

J. D.D. Gawith; J. Ma; B. Shen; C. Li; J. Yang; Y. Öztürk; T. A. Coombs

doi:10.1088/1361-6668/ab2d61

An HTS power switch using YBCO thin film controlled by AC magnetic field

J. D.D. Gawith, J. Ma, B. Shen, C. Li, J. Yang, Y. Öztürk, T. A. Coombs

University of Cambridge

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

10 Citations (SciVal)

Abstract

This report is on the design of and results from a fast-acting, high power density high temperature superconducting switch. The switch uses thin films of YBa₂Cu₃O_7-x on a sapphire substrate switched into the off-state through application of an AC magnetic field to the superconductor, which causes any transport current to experience a dynamic resistance. Results show reliable and repeatable switching of a 10 × 30 mm section of thin film between an on-state with Ic of 100 A and an off-state of 9 mΩ, with off-state voltage exceeding 100 mV. On-state to off-state transition time is less than 1 ms and off-state to on-state transition time is around 15 ms. These results are promising for further development of a high power, fast-acting superconducting power switching device for use in applications such as flux pumps.

Original language	English
Article number	095007
Journal	Superconductor Science and Technology
Volume	32
Issue number	9
DOIs	https://doi.org/10.1088/1361-6668/ab2d61
Publication status	Published - 26 Jul 2019

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd.

Keywords

Flux pump
HTS switch
power converter
YBCO thin film

ASJC Scopus subject areas

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

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10.1088/1361-6668/ab2d61

Cite this

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title = "An HTS power switch using YBCO thin film controlled by AC magnetic field",

abstract = "This report is on the design of and results from a fast-acting, high power density high temperature superconducting switch. The switch uses thin films of YBa2Cu3O7-x on a sapphire substrate switched into the off-state through application of an AC magnetic field to the superconductor, which causes any transport current to experience a dynamic resistance. Results show reliable and repeatable switching of a 10 × 30 mm section of thin film between an on-state with Ic of 100 A and an off-state of 9 mΩ, with off-state voltage exceeding 100 mV. On-state to off-state transition time is less than 1 ms and off-state to on-state transition time is around 15 ms. These results are promising for further development of a high power, fast-acting superconducting power switching device for use in applications such as flux pumps.",

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doi = "10.1088/1361-6668/ab2d61",

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AU - Gawith, J. D.D.

AU - Ma, J.

AU - Shen, B.

AU - Li, C.

AU - Yang, J.

AU - Öztürk, Y.

AU - Coombs, T. A.

PY - 2019/7/26

Y1 - 2019/7/26

N2 - This report is on the design of and results from a fast-acting, high power density high temperature superconducting switch. The switch uses thin films of YBa2Cu3O7-x on a sapphire substrate switched into the off-state through application of an AC magnetic field to the superconductor, which causes any transport current to experience a dynamic resistance. Results show reliable and repeatable switching of a 10 × 30 mm section of thin film between an on-state with Ic of 100 A and an off-state of 9 mΩ, with off-state voltage exceeding 100 mV. On-state to off-state transition time is less than 1 ms and off-state to on-state transition time is around 15 ms. These results are promising for further development of a high power, fast-acting superconducting power switching device for use in applications such as flux pumps.

AB - This report is on the design of and results from a fast-acting, high power density high temperature superconducting switch. The switch uses thin films of YBa2Cu3O7-x on a sapphire substrate switched into the off-state through application of an AC magnetic field to the superconductor, which causes any transport current to experience a dynamic resistance. Results show reliable and repeatable switching of a 10 × 30 mm section of thin film between an on-state with Ic of 100 A and an off-state of 9 mΩ, with off-state voltage exceeding 100 mV. On-state to off-state transition time is less than 1 ms and off-state to on-state transition time is around 15 ms. These results are promising for further development of a high power, fast-acting superconducting power switching device for use in applications such as flux pumps.

KW - Flux pump

KW - HTS switch

KW - power converter

KW - YBCO thin film

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An HTS power switch using YBCO thin film controlled by AC magnetic field

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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