The Effect of Bobbin Material on the Thermal Stability of a Conduction-Cooled HTS Racetrack Coil

Oh Jun Kwon; Dong Gyu Yang; Jongseok Lee; Jung Bin Song; Jiho Lee; Tae Kuk Ko; Haigun Lee

doi:10.1109/TASC.2013.2295038

The Effect of Bobbin Material on the Thermal Stability of a Conduction-Cooled HTS Racetrack Coil

Oh Jun Kwon, Dong Gyu Yang, Jongseok Lee, Jung Bin Song, Jiho Lee, Tae Kuk Ko, Haigun Lee

Department of Materials Science and Engineering

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

7 Citations (Scopus)

Abstract

The quench and recovery characteristics of two GdBCO-coated conductor racetrack coils, one wound onto a high-strength aluminum (AL 6061-T6) bobbin and the other wound onto an oxygen-free high-conductivity (OFHC) copper bobbin, were evaluated to investigate the effect of bobbin material on the thermal stability of the HTS racetrack coil. The test results show that the minimum quench energy values of the coil wound onto the OFHC copper bobbin were larger than those of the coil wound onto the AL 6061-T6 bobbin. Furthermore, in the case of the coil wound onto the OFHC copper bobbin, the voltage signals increased more slowly compared to the coil wound onto the AL bobbin, and the recovery time was much shorter after a hot spot was generated by a heater. Overall, the coil wound onto the OFHC copper bobbin exhibited better thermal stability due to its superior thermal diffusivity.

Original language	English
Article number	4602505
Journal	IEEE Transactions on Applied Superconductivity
Volume	24
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2013.2295038
Publication status	Published - 2014 Jun

Keywords

Bobbin material
high-temperature superconducting (HTS) racetrack coil
quench and recovery characteristic
thermal stability

ASJC Scopus subject areas

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

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10.1109/TASC.2013.2295038

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title = "The Effect of Bobbin Material on the Thermal Stability of a Conduction-Cooled HTS Racetrack Coil",

abstract = "The quench and recovery characteristics of two GdBCO-coated conductor racetrack coils, one wound onto a high-strength aluminum (AL 6061-T6) bobbin and the other wound onto an oxygen-free high-conductivity (OFHC) copper bobbin, were evaluated to investigate the effect of bobbin material on the thermal stability of the HTS racetrack coil. The test results show that the minimum quench energy values of the coil wound onto the OFHC copper bobbin were larger than those of the coil wound onto the AL 6061-T6 bobbin. Furthermore, in the case of the coil wound onto the OFHC copper bobbin, the voltage signals increased more slowly compared to the coil wound onto the AL bobbin, and the recovery time was much shorter after a hot spot was generated by a heater. Overall, the coil wound onto the OFHC copper bobbin exhibited better thermal stability due to its superior thermal diffusivity.",

keywords = "Bobbin material, high-temperature superconducting (HTS) racetrack coil, quench and recovery characteristic, thermal stability",

author = "Kwon, {Oh Jun} and Yang, {Dong Gyu} and Jongseok Lee and Song, {Jung Bin} and Jiho Lee and Ko, {Tae Kuk} and Haigun Lee",

note = "Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

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AU - Kwon, Oh Jun

AU - Yang, Dong Gyu

AU - Lee, Jongseok

AU - Song, Jung Bin

AU - Lee, Jiho

AU - Ko, Tae Kuk

AU - Lee, Haigun

PY - 2014/6

Y1 - 2014/6

N2 - The quench and recovery characteristics of two GdBCO-coated conductor racetrack coils, one wound onto a high-strength aluminum (AL 6061-T6) bobbin and the other wound onto an oxygen-free high-conductivity (OFHC) copper bobbin, were evaluated to investigate the effect of bobbin material on the thermal stability of the HTS racetrack coil. The test results show that the minimum quench energy values of the coil wound onto the OFHC copper bobbin were larger than those of the coil wound onto the AL 6061-T6 bobbin. Furthermore, in the case of the coil wound onto the OFHC copper bobbin, the voltage signals increased more slowly compared to the coil wound onto the AL bobbin, and the recovery time was much shorter after a hot spot was generated by a heater. Overall, the coil wound onto the OFHC copper bobbin exhibited better thermal stability due to its superior thermal diffusivity.

AB - The quench and recovery characteristics of two GdBCO-coated conductor racetrack coils, one wound onto a high-strength aluminum (AL 6061-T6) bobbin and the other wound onto an oxygen-free high-conductivity (OFHC) copper bobbin, were evaluated to investigate the effect of bobbin material on the thermal stability of the HTS racetrack coil. The test results show that the minimum quench energy values of the coil wound onto the OFHC copper bobbin were larger than those of the coil wound onto the AL 6061-T6 bobbin. Furthermore, in the case of the coil wound onto the OFHC copper bobbin, the voltage signals increased more slowly compared to the coil wound onto the AL bobbin, and the recovery time was much shorter after a hot spot was generated by a heater. Overall, the coil wound onto the OFHC copper bobbin exhibited better thermal stability due to its superior thermal diffusivity.

KW - Bobbin material

KW - high-temperature superconducting (HTS) racetrack coil

KW - quench and recovery characteristic

KW - thermal stability

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JO - IEEE Transactions on Applied Superconductivity

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The Effect of Bobbin Material on the Thermal Stability of a Conduction-Cooled HTS Racetrack Coil

Abstract

Keywords

ASJC Scopus subject areas

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