Decay of Trapped Magnetic Field in Stacks of YBCO Coated Conductors Subjected to Traveling Magnetic Waves

2019 ◽  
Vol 29 (7) ◽  
pp. 1-9 ◽  
Author(s):  
Xiang Li ◽  
Jing Li ◽  
Pengbo Zhou ◽  
Kun Liu ◽  
Le Han ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Coated Conductors ◽  
Trapped Magnetic Field ◽  
Ybco Coated Conductors ◽  
Magnetic Waves

Double disordered YBCO coated conductors of industrial scale: high currents in high magnetic field

2015 ◽  
Vol 28 (11) ◽  
pp. 114007 ◽  
Author(s):  
D Abraimov ◽  
A Ballarino ◽  
C Barth ◽  
L Bottura ◽  
R Dietrich ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Coated Conductors ◽  
Industrial Scale ◽  
Ybco Coated Conductors

AC Loss Characteristics of Stacks of YBCO Coated Conductors

2006 ◽  
Vol 946 ◽  
Author(s):  
Francesco Grilli ◽  
Stephen P. Ashworth ◽  
Svetlomir Stavrev
Keyword(s):  
Magnetic Field ◽  
Transport Current ◽  
Point Of View ◽  
Coated Conductors ◽  
Ac Loss ◽  
Ac Losses ◽  
Practical Applications ◽  
Superconducting Coils ◽  
Loss Characteristic ◽  
Ybco Coated Conductors

ABSTRACTPractical applications of YBCO coated conductors (CC) involving superconducting coils will utilize tapes packed together in an arrangement resembling a vertical stack. In such configuration there is an important electromagnetic interaction between the tapes, which strongly influences the loss characteristic of the device.In the presence of an external magnetic field, the losses are reduced compared to an isolated tape because of the reduced aspect ratio of the conductor and, at least for low fields, because of an effective screening of the central part of the stack. On the contrary, in the case of AC transport current, the losses tend to increase due to the enhancement of the local field caused by the interaction of the self-field produced by neighboring tapes. In practical situations the conductor is usually subjected to both transport current and magnetic field, so that there is a trade-off between the two effects.In this paper we investigate, both experimentally and by means of finite-element method calculations, the ac loss behavior of a stack composed by a finite number of tapes in different working conditions, and we compare the AC losses to the ones of non-interacting tapes in order to determine if the use of stacked tapes is advantageous from the point of view of power dissipation.

Magnetic field anisotropy of high critical current YBCO coated conductors

1999 ◽  
Vol 9 (2) ◽  
pp. 1487-1489 ◽  
Author(s):  
J.Y. Coulter ◽  
J.O. Willis ◽  
M.M. Mann ◽  
P.C. Dowden ◽  
S.R. Foltyn ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Critical Current ◽  
Coated Conductors ◽  
Ybco Coated Conductors

Magnetic Field Dependence of Critical Current Density of TFA-MOD Processed YBCO Coated Conductors

2000 ◽  
Vol 659 ◽  
Author(s):  
Yutaka Yamada ◽  
SeokBeom Kim ◽  
Takeshi Araki ◽  
Toyotaka Yuasa ◽  
Yasuo Takahashi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Coated Conductors ◽  
Coating Solution ◽  
Metalorganic Deposition ◽  
The Difference ◽  
The Magnetic Field ◽  
Ybco Coated Conductors ◽  
Superior Property

ABSTRACTYBCO films on LaAlO3and IBAD (YSZ/Hastelloy) substrate were made by TFA-MOD (metalorganic deposition using trifluoroacetate) process. Improved coating solution resulted in high Jc at 77.3K and 0T of 7 MA/cm2 and 1.7 MA/cm2 for LaAlO3 and IBAD substrates, respectively. The magnetic field dependence of Jc at 77.3K also showed superior property: 105 A/cm2 at 4T (B//c-axis) for the LaAlO3substrate and at 3T (B//c-axis)) for IBAD substrate. Furthermore, the difference in Jc between single crystal LaAlO3and IBAD was small up to 3T. The present results imply that TFA-MOD process is promising for the practical YBCO coated conductor process.

Characterization of YBCO Coated Conductors Under High Magnetic Field at LNCMI

2012 ◽  
Vol 22 (3) ◽  
pp. 6600704-6600704 ◽  
Author(s):  
X. Chaud ◽  
F. Debray ◽  
L. Ronayette ◽  
E. Mossang ◽  
P. Brosse-Maron ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Coated Conductors ◽  
Ybco Coated Conductors

Technique for Studying Overcurrent Behavior in YBCO Coated Conductors Using a Localized Magnetic Field

2005 ◽  
Vol 868 ◽  
Author(s):  
J. Yates Coulter ◽  
Stephen P. Ashworth ◽  
Paul C. Dowden ◽  
Jeffrey O. Willis
Keyword(s):  
Magnetic Field ◽  
Temperature Rise ◽  
Power Dissipation ◽  
High Temperature Superconductor ◽  
Coated Conductors ◽  
Spatial Gradient ◽  
Current Events ◽  
Ybco Coated Conductors ◽  
Superconductor Tape ◽  
Localized Magnetic Field

AbstractOver current stabilization of YBa2Cu30x (YBCO) coated conductor high temperature superconductor tape is required in most applications. The conductor must carry currents in excess of the critical current, Ic, without damage during over current events. Conductor damage is the result of joule heating and excessive temperature rise in regions with low Ic. We have developed and applied a measurement technique using a locally applied magnetic field with a high spatial gradient to define a small area over which the Ic is depressed. By measuring the voltage and temperature as a function of current, power dissipation and temperature rise were determined. Unstabilized conductors experienced thermal runaway and are easily damaged. Copper stabilizers applied by electroplating decreased dramatically the temperature rise and increased the level of power dissipation compared with the unstabilized conductor.

YBCO coated conductors by reactive thermal co-evaporation

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-109-Pr11-113
Author(s):  
U. Schmatz ◽  
Ch. Hoffmann ◽  
M. Bauer ◽  
R. Metzger ◽  
P. Berberich ◽  
...  
Keyword(s):  
Coated Conductors ◽  
Ybco Coated Conductors
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