Substrate and stabilization effects on the transport AC losses in YBCO coated conductors

R. C. Duckworth; M. J. Gouge; J. W. Lue; C. L.H. Thieme; D. T. Verebelyi

doi:10.1109/TASC.2005.849181

Substrate and stabilization effects on the transport AC losses in YBCO coated conductors

R. C. Duckworth, M. J. Gouge, J. W. Lue, C. L.H. Thieme, D. T. Verebelyi

Fusion Technology

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

49 Scopus citations

Abstract

In support of second generation HTS conductor development for ac applications, transport ac loss measurements were conducted on a series of RABiTS-processed YBa₂Cu₃O_x (YBCO) coated conductors with different nickel alloy substrates and copper stabilization at 77 K. Each 1-cm wide sample had a critical current density between 1.0 and 2.0 MA/cm² and had either a 75 μm. Ni-5at% W substrate or a 75 μm Ni-10%Cr-2% W substrate with 2-μm nickel overlayer. Samples with copper stabilization had a 50-μm strip of 1 cm wide copper laminated to a 3-μm thick silver coated YBCO sample. Using thermal and electrical measurement techniques, the ac losses were measured as a function of the peak current ratio at 60 Hz. Experimental results were compared to the Norris thin strip and elliptical models to determine the influence of the ferromagnetic loss of the substrate and the copper lamination on the total ac loss.

Original language	English
Pages (from-to)	1583-1586
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	15
Issue number	2 PART II
DOIs	https://doi.org/10.1109/TASC.2005.849181
State	Published - Jun 2005

Funding

Manuscript received October 4, 2004. This work was supported by the U.S. Department of Energy, Office of Electric Transmission and Distribution, Superconductivity Program for Electric Power Systems under Contract DE-AC05-00OR22725 with UT-Battelle, LLC. R. C. Duckworth, M. J. Gouge, and J. W. Lue are with the Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA (e-mail: [email protected]). C. L. H. Thieme and D. T. Verebelyi are with the American Superconductor, Westborough, MA 01581 USA. Digital Object Identifier 10.1109/TASC.2005.849181

Keywords

AC loss
Ferromagnetic loss
Nickel alloy substrate
YBCO coated conductor

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10.1109/TASC.2005.849181

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title = "Substrate and stabilization effects on the transport AC losses in YBCO coated conductors",

abstract = "In support of second generation HTS conductor development for ac applications, transport ac loss measurements were conducted on a series of RABiTS-processed YBa2Cu3Ox (YBCO) coated conductors with different nickel alloy substrates and copper stabilization at 77 K. Each 1-cm wide sample had a critical current density between 1.0 and 2.0 MA/cm2 and had either a 75 μm. Ni-5at% W substrate or a 75 μm Ni-10%Cr-2% W substrate with 2-μm nickel overlayer. Samples with copper stabilization had a 50-μm strip of 1 cm wide copper laminated to a 3-μm thick silver coated YBCO sample. Using thermal and electrical measurement techniques, the ac losses were measured as a function of the peak current ratio at 60 Hz. Experimental results were compared to the Norris thin strip and elliptical models to determine the influence of the ferromagnetic loss of the substrate and the copper lamination on the total ac loss.",

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AU - Gouge, M. J.

AU - Lue, J. W.

AU - Thieme, C. L.H.

AU - Verebelyi, D. T.

PY - 2005/6

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N2 - In support of second generation HTS conductor development for ac applications, transport ac loss measurements were conducted on a series of RABiTS-processed YBa2Cu3Ox (YBCO) coated conductors with different nickel alloy substrates and copper stabilization at 77 K. Each 1-cm wide sample had a critical current density between 1.0 and 2.0 MA/cm2 and had either a 75 μm. Ni-5at% W substrate or a 75 μm Ni-10%Cr-2% W substrate with 2-μm nickel overlayer. Samples with copper stabilization had a 50-μm strip of 1 cm wide copper laminated to a 3-μm thick silver coated YBCO sample. Using thermal and electrical measurement techniques, the ac losses were measured as a function of the peak current ratio at 60 Hz. Experimental results were compared to the Norris thin strip and elliptical models to determine the influence of the ferromagnetic loss of the substrate and the copper lamination on the total ac loss.

AB - In support of second generation HTS conductor development for ac applications, transport ac loss measurements were conducted on a series of RABiTS-processed YBa2Cu3Ox (YBCO) coated conductors with different nickel alloy substrates and copper stabilization at 77 K. Each 1-cm wide sample had a critical current density between 1.0 and 2.0 MA/cm2 and had either a 75 μm. Ni-5at% W substrate or a 75 μm Ni-10%Cr-2% W substrate with 2-μm nickel overlayer. Samples with copper stabilization had a 50-μm strip of 1 cm wide copper laminated to a 3-μm thick silver coated YBCO sample. Using thermal and electrical measurement techniques, the ac losses were measured as a function of the peak current ratio at 60 Hz. Experimental results were compared to the Norris thin strip and elliptical models to determine the influence of the ferromagnetic loss of the substrate and the copper lamination on the total ac loss.

KW - AC loss

KW - Ferromagnetic loss

KW - Nickel alloy substrate

KW - YBCO coated conductor

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ER -

Substrate and stabilization effects on the transport AC losses in YBCO coated conductors

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