Quench behavior of YBa2 Cu3O7 coated conductor with AC transport current

Guo Min Zhang; David J. Knoll; Doan N. Nguyen; Pamidi V.P.S.S. Sastry; Xiaorong Wang; Justin Schwartz

doi:10.1109/TASC.2007.910162

Quench behavior of YBa₂ Cu₃O₇ coated conductor with AC transport current

Guo Min Zhang, David J. Knoll, Doan N. Nguyen, Pamidi V.P.S.S. Sastry, Xiaorong Wang, Justin Schwartz

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22 Scopus citations

Abstract

Alternating current (ac) loss and quench behavior measurements were performed on a YBa₂Cu₃O_x coated conductor at 45 K. The minimum quench energies (MQEs) and the quench propagation velocities were measured as a function of transport current and frequency. AC losses were measured at the corresponding temperature and frequencies to quantify the internal thermal load during ac quench measurements. It was found that the direct current (dc) and ac quench behavior are similar, but that the MQE for dc experiments is higher than the corresponding ac cases. This difference is not seen in the normal zone propagation velocity data, indicating that the difference in MQE is minimal if the ac losses are included in the energy calculation. The ac experiments show that the MQE and propagation velocity varies weakly with frequency.

Original language	English (US)
Pages (from-to)	3874-3879
Number of pages	6
Journal	IEEE Transactions on Applied Superconductivity
Volume	17
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2007.910162
State	Published - Dec 2007

All Science Journal Classification (ASJC) codes

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

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10.1109/TASC.2007.910162

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@article{f01c17c32a3f47ddbc5da18d5eadf028,

title = "Quench behavior of YBa2 Cu3O7 coated conductor with AC transport current",

abstract = "Alternating current (ac) loss and quench behavior measurements were performed on a YBa2Cu3Ox coated conductor at 45 K. The minimum quench energies (MQEs) and the quench propagation velocities were measured as a function of transport current and frequency. AC losses were measured at the corresponding temperature and frequencies to quantify the internal thermal load during ac quench measurements. It was found that the direct current (dc) and ac quench behavior are similar, but that the MQE for dc experiments is higher than the corresponding ac cases. This difference is not seen in the normal zone propagation velocity data, indicating that the difference in MQE is minimal if the ac losses are included in the energy calculation. The ac experiments show that the MQE and propagation velocity varies weakly with frequency.",

author = "Zhang, {Guo Min} and Knoll, {David J.} and Nguyen, {Doan N.} and Sastry, {Pamidi V.P.S.S.} and Xiaorong Wang and Justin Schwartz",

note = "Funding Information: Manuscript received February 13, 2007; revised June 14, 2007 and August 27, 2007. This work was supported by the Air Force Office of Scientific Research and by the Office of Naval Research, and was supported in part by A Foundation for the National Excellent Doctoral Dissertation of China (200750). This paper was recommended by Associate Editor J. O. Willis.",

year = "2007",

month = dec,

doi = "10.1109/TASC.2007.910162",

language = "English (US)",

volume = "17",

pages = "3874--3879",

journal = "IEEE Transactions on Applied Superconductivity",

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T1 - Quench behavior of YBa2 Cu3O7 coated conductor with AC transport current

AU - Zhang, Guo Min

AU - Knoll, David J.

AU - Nguyen, Doan N.

AU - Sastry, Pamidi V.P.S.S.

AU - Wang, Xiaorong

AU - Schwartz, Justin

N1 - Funding Information: Manuscript received February 13, 2007; revised June 14, 2007 and August 27, 2007. This work was supported by the Air Force Office of Scientific Research and by the Office of Naval Research, and was supported in part by A Foundation for the National Excellent Doctoral Dissertation of China (200750). This paper was recommended by Associate Editor J. O. Willis.

PY - 2007/12

Y1 - 2007/12

N2 - Alternating current (ac) loss and quench behavior measurements were performed on a YBa2Cu3Ox coated conductor at 45 K. The minimum quench energies (MQEs) and the quench propagation velocities were measured as a function of transport current and frequency. AC losses were measured at the corresponding temperature and frequencies to quantify the internal thermal load during ac quench measurements. It was found that the direct current (dc) and ac quench behavior are similar, but that the MQE for dc experiments is higher than the corresponding ac cases. This difference is not seen in the normal zone propagation velocity data, indicating that the difference in MQE is minimal if the ac losses are included in the energy calculation. The ac experiments show that the MQE and propagation velocity varies weakly with frequency.

AB - Alternating current (ac) loss and quench behavior measurements were performed on a YBa2Cu3Ox coated conductor at 45 K. The minimum quench energies (MQEs) and the quench propagation velocities were measured as a function of transport current and frequency. AC losses were measured at the corresponding temperature and frequencies to quantify the internal thermal load during ac quench measurements. It was found that the direct current (dc) and ac quench behavior are similar, but that the MQE for dc experiments is higher than the corresponding ac cases. This difference is not seen in the normal zone propagation velocity data, indicating that the difference in MQE is minimal if the ac losses are included in the energy calculation. The ac experiments show that the MQE and propagation velocity varies weakly with frequency.

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Quench behavior of YBa₂ Cu₃O₇ coated conductor with AC transport current

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