Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables
Abstract
A Roebel cable, one twist pitch long, was modified from its as-received state by soldering copper strips between the strands to provide inter-strand connections enabling current sharing. Various DC transport currents (representing different percentages of its critical current) were applied to a single strand of such a modified cable at 77 K in a liquid nitrogen bath. Simultaneous monitoring of I–V curves in different parts of the strand as well as in its interconnections with other strands was made using a number of sensitive Keithley nanovoltmeters in combination with a multichannel high-speed data acquisition card, all controlled via LabView software. Current sharing onset was observed at about 1.02 of strand Ic. At a strand current of 1.3Ic about 5% of the current was shared through the copper strip interconnections. A finite element method modeling was performed to estimate the inter-strand resistivities required to enable different levels of current sharing. The relative contributions of coupling and hysteretic magnetization (and loss) were compared, and for our cable and tape geometry, and at dB/dt=1 T s-1, and our inter-strand resistance of 0.77 mΩ, (enabling a current sharing of 5% at 1.3Ic ) the coupling component was 0.32% of the hysteretic component. However, inter-strandmore »
- Authors:
-
- The Ohio State Univ., Columbus, OH (United States)
- Univ. of Colorado, Boulder, CO (United States)
- Publication Date:
- Research Org.:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1213933
- Grant/Contract Number:
- SC0011721; FA8650-12-M-2264; FA8650-12-M-2254
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Superconductor Science and Technology
- Additional Journal Information:
- Journal Volume: 27; Journal ID: ISSN 0953-2048
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; 36 MATERIALS SCIENCE; Roebel cable; magnetization
Citation Formats
sumption, Mike, Majoros, Milan, Collings, E. W., and Van der Laan, D. C. Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables. United States: N. p., 2014.
Web. doi:10.1088/0953-2048/27/12/125008.
sumption, Mike, Majoros, Milan, Collings, E. W., & Van der Laan, D. C. Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables. United States. https://doi.org/10.1088/0953-2048/27/12/125008
sumption, Mike, Majoros, Milan, Collings, E. W., and Van der Laan, D. C. Fri .
"Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables". United States. https://doi.org/10.1088/0953-2048/27/12/125008. https://www.osti.gov/servlets/purl/1213933.
@article{osti_1213933,
title = {Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables},
author = {sumption, Mike and Majoros, Milan and Collings, E. W. and Van der Laan, D. C.},
abstractNote = {A Roebel cable, one twist pitch long, was modified from its as-received state by soldering copper strips between the strands to provide inter-strand connections enabling current sharing. Various DC transport currents (representing different percentages of its critical current) were applied to a single strand of such a modified cable at 77 K in a liquid nitrogen bath. Simultaneous monitoring of I–V curves in different parts of the strand as well as in its interconnections with other strands was made using a number of sensitive Keithley nanovoltmeters in combination with a multichannel high-speed data acquisition card, all controlled via LabView software. Current sharing onset was observed at about 1.02 of strand Ic. At a strand current of 1.3Ic about 5% of the current was shared through the copper strip interconnections. A finite element method modeling was performed to estimate the inter-strand resistivities required to enable different levels of current sharing. The relative contributions of coupling and hysteretic magnetization (and loss) were compared, and for our cable and tape geometry, and at dB/dt=1 T s-1, and our inter-strand resistance of 0.77 mΩ, (enabling a current sharing of 5% at 1.3Ic ) the coupling component was 0.32% of the hysteretic component. However, inter-strand contact resistance values of 100–1000 times smaller (close to those of NbTi and Nb3Sn based accelerator cables) would make the coupling components comparable in size to the hysteretic components.},
doi = {10.1088/0953-2048/27/12/125008},
journal = {Superconductor Science and Technology},
number = ,
volume = 27,
place = {United States},
year = {Fri Nov 07 00:00:00 EST 2014},
month = {Fri Nov 07 00:00:00 EST 2014}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 36 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
HTS twisted stacked-tape cable conductor
journal, December 2011
- Takayasu, Makoto; Chiesa, Luisa; Bromberg, Leslie
- Superconductor Science and Technology, Vol. 25, Issue 1
Conductor Characterization of YBCO Twisted Stacked-Tape Cables
journal, June 2013
- Takayasu, M.; Mangiarotti, F. J.; Chiesa, L.
- IEEE Transactions on Applied Superconductivity, Vol. 23, Issue 3
Development of Termination Methods for 2G HTS Tape Cable Conductors
journal, June 2014
- Takayasu, M.; Chiesa, L.; Minervini, J. V.
- IEEE Transactions on Applied Superconductivity, Vol. 24, Issue 3
High current DyBCO-ROEBEL Assembled Coated Conductor (RACC)
journal, June 2006
- Goldacker, W.; Nast, R.; Kotzyba, G.
- Journal of Physics: Conference Series, Vol. 43
Transport and magnetization ac losses of ROEBEL assembled coated conductor cables: measurements and calculations
journal, December 2009
- Terzieva, Stanimira; Vojenčiak, Michail; Pardo, Enric
- Superconductor Science and Technology, Vol. 23, Issue 1
Stability, Inter-Strand Contact Resistance, and AC Losses in YBCO Roebel Cables
journal, June 2014
- Majoros, M.; Sumption, M. D.; Collings, E. W.
- IEEE Transactions on Applied Superconductivity, Vol. 24, Issue 3
YBa 2 Cu 3 O 7−δ coated conductor cabling for low ac-loss and high-field magnet applications
journal, April 2009
- van der Laan, D. C.
- Superconductor Science and Technology, Vol. 22, Issue 6
High-current dc power transmission in flexible RE–Ba 2 Cu 3 O 7 − δ coated conductor cables
journal, December 2011
- van der Laan, D. C.; Goodrich, L. F.; Haugan, T. J.
- Superconductor Science and Technology, Vol. 25, Issue 1
Characterization of a high-temperature superconducting conductor on round core cables in magnetic fields up to 20 T
journal, February 2013
- van der Laan, D. C.; Noyes, P. D.; Miller, G. E.
- Superconductor Science and Technology, Vol. 26, Issue 4
Experimentally determined transport and magnetization ac losses of small cable models constructed from YBCO coated conductors
journal, March 2010
- Šouc, J.; Vojenčiak, M.; Gömöry, F.
- Superconductor Science and Technology, Vol. 23, Issue 4
Low AC loss cable produced from transposed striated CC tapes
journal, June 2013
- Šouc, J.; Gömöry, F.; Kováč, J.
- Superconductor Science and Technology, Vol. 26, Issue 7
Hall probe magnetometer for SSC magnet cables: effect of transport current on magnetization and flux creep
journal, March 1991
- Cross, R. W.; Goldfarb, R. B.
- IEEE Transactions on Magnetics, Vol. 27, Issue 2
Influence of Transport Current on the Magnetization of a Hard Superconductor
journal, August 1963
- LeBlanc, M. A. R.
- Physical Review Letters, Vol. 11, Issue 4
Ac loss in YBCO coated conductors exposed to external magnetic fields at 50–200Hz
journal, November 2007
- Sumption, M. D.; Kawabata, S.; Collings, E. W.
- Physica C: Superconductivity, Vol. 466, Issue 1-2
AC Loss and Macroscopic Theory of Superconductors
reference-book, January 2001
- Carr Jr., W. J.
- CRC Press
Hysteretic loss vs. filament width in thin YBCO films near the penetration field
journal, June 2003
- Sumption, M. D.; Lee, E.; Cobb, C. B.
- IEEE Transactions on Appiled Superconductivity, Vol. 13, Issue 2
Hysteresis losses in YBCO coated conductors on textured metallic substrates
journal, June 2003
- Majoros, M.; Tomov, R. I.; Glowacki, B. A.
- IEEE Transactions on Appiled Superconductivity, Vol. 13, Issue 2
AC Losses in Striated YBCO Coated Conductors
journal, June 2005
- Majoros, M.; Glowacki, B. A.; Campbell, A. M.
- IEEE Transactions on Appiled Superconductivity, Vol. 15, Issue 2
AC losses of superconducting high-Tc multifilament Bi-2223/Ag sheathd tapes in perpendicular magnetic fields
journal, November 1994
- Kwasnitza, K.; Clerc, St.
- Physica C: Superconductivity, Vol. 233, Issue 3-4
Numerical solution of critical state in superconductivity by finite element software
journal, October 2006
- Hong, Z.; Campbell, A. M.; Coombs, T. A.
- Superconductor Science and Technology, Vol. 19, Issue 12
Modeling High-Temperature Superconducting Tapes by Means of Edge Finite Elements
journal, June 2007
- Grilli, F.; Brambilla, R.; Martini, L.
- IEEE Transactions on Applied Superconductivity, Vol. 17, Issue 2
Numerical Estimation of AC Loss in MgB2 Wires in Self-field Condition
journal, April 2008
- Hong, Z.; Ye, L.; Majoros, M.
- Journal of Superconductivity and Novel Magnetism, Vol. 21, Issue 3
Boiling heat transfer characteristics for heat inputs with various increasing rates in liquid nitrogen
journal, January 1992
- Sakurai, A.; Shiotsu, M.; Hata, K.
- Cryogenics, Vol. 32, Issue 5
Works referencing / citing this record:
Study of the magnetization loss of CORC ® cables using a 3D T-A formulation
journal, January 2019
- Wang, Yawei; Zhang, Min; Grilli, Francesco
- Superconductor Science and Technology, Vol. 32, Issue 2