Discharge Voltage Effects on High-TC Superconducting Tapes with Respect to Tensile Stress

Seokho Nam; Woo Seung Lee; Hongseok Lee; Jong O. Kang; Junil Kim; Young Kyu Mo; Seungmin Bang; Onyou Lee; Hyoungku Kang; Tae Kuk Ko

doi:10.1109/TASC.2016.2532463

Discharge Voltage Effects on High-T_C Superconducting Tapes with Respect to Tensile Stress

Seokho Nam, Woo Seung Lee, Hongseok Lee, Jong O. Kang, Junil Kim, Young Kyu Mo, Seungmin Bang, Onyou Lee, Hyoungku Kang, Tae Kuk Ko

Department of Electrical and Electronic Engineering

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

Abstract

Breakdown voltage can occur in a superconducting magnet system under high electric field conditions caused by inductive voltage, high-voltage operation, quench resistance, and keen edge of high-Tc superconducting (HTS) tapes. Discharge voltage on a superconducting coil can degrade the critical current and the index number of HTS tapes. In this paper, HTS tape experiments are conducted to confirm the degradation characteristics of HTS tapes under dc breakdown voltage. In real systems, winding tension is applied in magnet systems. Therefore, tensile stresses were applied in the HTS tape when testing the degradation by breakdown voltage. The tension was controlled by using the bolt torque of a fabricated sample. In addition, degradation characteristics of BSCCO and YBCO tapes under dc breakdown voltage were compared. Our results revealed that HTS tape could affect breakdown voltage and tensile stress.

Original language	English
Article number	7429707
Journal	IEEE Transactions on Applied Superconductivity
Volume	26
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2016.2532463
Publication status	Published - 2016 Jun

Bibliographical note

Funding Information:
This work was supported by the National R&D Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning under Grant 2015M1A7A1A0205725.

Publisher Copyright:
© 2015 IEEE.

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1109/TASC.2016.2532463

Cite this

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title = "Discharge Voltage Effects on High-TC Superconducting Tapes with Respect to Tensile Stress",

abstract = "Breakdown voltage can occur in a superconducting magnet system under high electric field conditions caused by inductive voltage, high-voltage operation, quench resistance, and keen edge of high-Tc superconducting (HTS) tapes. Discharge voltage on a superconducting coil can degrade the critical current and the index number of HTS tapes. In this paper, HTS tape experiments are conducted to confirm the degradation characteristics of HTS tapes under dc breakdown voltage. In real systems, winding tension is applied in magnet systems. Therefore, tensile stresses were applied in the HTS tape when testing the degradation by breakdown voltage. The tension was controlled by using the bolt torque of a fabricated sample. In addition, degradation characteristics of BSCCO and YBCO tapes under dc breakdown voltage were compared. Our results revealed that HTS tape could affect breakdown voltage and tensile stress.",

author = "Seokho Nam and Lee, {Woo Seung} and Hongseok Lee and Kang, {Jong O.} and Junil Kim and Mo, {Young Kyu} and Seungmin Bang and Onyou Lee and Hyoungku Kang and Ko, {Tae Kuk}",

note = "Funding Information: This work was supported by the National R&D Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning under Grant 2015M1A7A1A0205725. Publisher Copyright: {\textcopyright} 2015 IEEE.",

year = "2016",

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language = "English",

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AU - Nam, Seokho

AU - Lee, Woo Seung

AU - Lee, Hongseok

AU - Kang, Jong O.

AU - Kim, Junil

AU - Mo, Young Kyu

AU - Bang, Seungmin

AU - Lee, Onyou

AU - Kang, Hyoungku

AU - Ko, Tae Kuk

N1 - Funding Information: This work was supported by the National R&D Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning under Grant 2015M1A7A1A0205725. Publisher Copyright: © 2015 IEEE.

PY - 2016/6

Y1 - 2016/6

N2 - Breakdown voltage can occur in a superconducting magnet system under high electric field conditions caused by inductive voltage, high-voltage operation, quench resistance, and keen edge of high-Tc superconducting (HTS) tapes. Discharge voltage on a superconducting coil can degrade the critical current and the index number of HTS tapes. In this paper, HTS tape experiments are conducted to confirm the degradation characteristics of HTS tapes under dc breakdown voltage. In real systems, winding tension is applied in magnet systems. Therefore, tensile stresses were applied in the HTS tape when testing the degradation by breakdown voltage. The tension was controlled by using the bolt torque of a fabricated sample. In addition, degradation characteristics of BSCCO and YBCO tapes under dc breakdown voltage were compared. Our results revealed that HTS tape could affect breakdown voltage and tensile stress.

AB - Breakdown voltage can occur in a superconducting magnet system under high electric field conditions caused by inductive voltage, high-voltage operation, quench resistance, and keen edge of high-Tc superconducting (HTS) tapes. Discharge voltage on a superconducting coil can degrade the critical current and the index number of HTS tapes. In this paper, HTS tape experiments are conducted to confirm the degradation characteristics of HTS tapes under dc breakdown voltage. In real systems, winding tension is applied in magnet systems. Therefore, tensile stresses were applied in the HTS tape when testing the degradation by breakdown voltage. The tension was controlled by using the bolt torque of a fabricated sample. In addition, degradation characteristics of BSCCO and YBCO tapes under dc breakdown voltage were compared. Our results revealed that HTS tape could affect breakdown voltage and tensile stress.

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