AC losses of roebel cables with striated 2G YBCO strands
AC losses of roebel cables with striated 2G YBCO strands
We present experimental data on the ac losses in Roebel cables with striated 2G YBCO strands. Electromagnetic measurements by pick-up coils were carried out at different temperatures between 10K and 85K at frequencies between 2Hz and 20kHz in transverse ac fields up to 0.5T. The Roebel cable samples were assembled from laser cut 2G YBCO strands, which consist of striated filaments prepared with laser scribing. Measurements at different temperatures show that the Roebel cables with striated strands have a lower losses by a factor of strand filament number over the whole temperature range. For analysis, a semi-quantitative approach for unstriated Roebel was found to work satisfactorily. However the Striated Roebel cables appears to have a different field penetration from those of the unstriated Roebel. The coupling current among the filaments has a time constant shorter than 0.1 ms and do not appear to increase in the striated Roebel cables, hence insignificant for most magnets related applications.
ac losses, Loss measurement, Magnetic hysteresis, Power cables, REBCO 2G conductor, Roebel cable, Saturation magnetization, straition, Superconducting cables, Superconducting magnets, Temperature measurement
1-5
Yang, Yifeng
4cac858a-e0c0-4174-a839-05ca394fc51f
Pelegrin, Jorge
3a110c1a-ad88-4f90-bffc-7a0b5042f240
Young, Edward A.
d3a881b0-a564-41f5-9843-34ae86da360f
Kario, Anna
060118d8-3e82-4934-bdf9-a9df622e73bf
Nast, Rainer
dfee5478-b49a-4e80-a8c1-ced396e09456
Goldacker, Wilfried
ce57bc6f-3491-4512-8967-82a9658acd30
June 2018
Yang, Yifeng
4cac858a-e0c0-4174-a839-05ca394fc51f
Pelegrin, Jorge
3a110c1a-ad88-4f90-bffc-7a0b5042f240
Young, Edward A.
d3a881b0-a564-41f5-9843-34ae86da360f
Kario, Anna
060118d8-3e82-4934-bdf9-a9df622e73bf
Nast, Rainer
dfee5478-b49a-4e80-a8c1-ced396e09456
Goldacker, Wilfried
ce57bc6f-3491-4512-8967-82a9658acd30
Yang, Yifeng, Pelegrin, Jorge, Young, Edward A., Kario, Anna, Nast, Rainer and Goldacker, Wilfried
(2018)
AC losses of roebel cables with striated 2G YBCO strands.
IEEE Transactions on Applied Superconductivity, 28 (4), , [6602105].
(doi:10.1109/TASC.2018.2807178).
Abstract
We present experimental data on the ac losses in Roebel cables with striated 2G YBCO strands. Electromagnetic measurements by pick-up coils were carried out at different temperatures between 10K and 85K at frequencies between 2Hz and 20kHz in transverse ac fields up to 0.5T. The Roebel cable samples were assembled from laser cut 2G YBCO strands, which consist of striated filaments prepared with laser scribing. Measurements at different temperatures show that the Roebel cables with striated strands have a lower losses by a factor of strand filament number over the whole temperature range. For analysis, a semi-quantitative approach for unstriated Roebel was found to work satisfactorily. However the Striated Roebel cables appears to have a different field penetration from those of the unstriated Roebel. The coupling current among the filaments has a time constant shorter than 0.1 ms and do not appear to increase in the striated Roebel cables, hence insignificant for most magnets related applications.
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08293794-Early Access
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Accepted/In Press date: 15 February 2018
e-pub ahead of print date: 16 February 2018
Published date: June 2018
Keywords:
ac losses, Loss measurement, Magnetic hysteresis, Power cables, REBCO 2G conductor, Roebel cable, Saturation magnetization, straition, Superconducting cables, Superconducting magnets, Temperature measurement
Identifiers
Local EPrints ID: 418698
URI: http://eprints.soton.ac.uk/id/eprint/418698
ISSN: 1051-8223
PURE UUID: 965e613f-bc82-47cd-a2ed-cdd1c6019a42
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Date deposited: 19 Mar 2018 17:30
Last modified: 16 Mar 2024 02:44
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Contributors
Author:
Jorge Pelegrin
Author:
Anna Kario
Author:
Rainer Nast
Author:
Wilfried Goldacker
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