Use of interleaved bulks and coated conductors to screen the stray magnetic field of a large superconducting coil from a high-torque rotating machine
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932800" target="_blank" >RIV/60461373:22310/25:43932800 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1361-6668/ae2cf9" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6668/ae2cf9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6668/ae2cf9" target="_blank" >10.1088/1361-6668/ae2cf9</a>
Alternative languages
Result language
angličtina
Original language name
Use of interleaved bulks and coated conductors to screen the stray magnetic field of a large superconducting coil from a high-torque rotating machine
Original language description
Large superconducting magnetic devices often produce an inhomogeneous stray magnetic field extending over wide surface areas which must be attenuated. In this work, we introduce high-temperature superconducting magnetic screens (or shields) where four 60 mm-diameter disk-shaped bulks are arranged side-by-side, combined with interleaved closed-loop coated conductors and short stacked tapes. We subject these hybrid screens to the inhomogeneous stray magnetic field of a large superconducting coil designed to demonstrate a rotating machine pole of a direct-drive wind turbine. Experiments carried out in liquid nitrogen and for an applied magnetic field up to similar to 150 mT demonstrate that adding the coated conductors around the bulks mitigates the presence of the gaps between the bulks and provides a lightweight and effective solution to increase the surface area over which the applied field is attenuated. Suitable field attenuations (screening factor SF >= 1.5 at low field) are obtained over at least 138 mm. Then, we explain the measurements by analysing how the axial and transverse components of the field are affected by the presence of the screen. Apprehending how the magnetic flux lines are diverted allows us to explain the influence of the inhomogeneity of the applied field on the screening (or shielding) properties. Finally, we use trapped field measurements to confirm the role of the different superconducting parts of the screen.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA24-10171S" target="_blank" >GA24-10171S: Melt-assisted growth of defect-free single-domain REBCO crystals</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
ISSN
0953-2048
e-ISSN
1361-6668
Volume of the periodical
38
Issue of the periodical within the volume
12
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
nestránkováno
UT code for WoS article
001647578400001
EID of the result in the Scopus database
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