High-Tc superconducting materials for electric power applications

David Larbalestier (), Alex Gurevich, D. Matthew Feldmann and Anatoly Polyanskii
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David Larbalestier: Applied Superconductivity Center, University of Wisconsin
Alex Gurevich: Applied Superconductivity Center, University of Wisconsin
D. Matthew Feldmann: Applied Superconductivity Center, University of Wisconsin
Anatoly Polyanskii: Applied Superconductivity Center, University of Wisconsin

Nature, 2001, vol. 414, issue 6861, 368-377

Abstract: Abstract Large-scale superconducting electric devices for power industry depend critically on wires with high critical current densities at temperatures where cryogenic losses are tolerable. This restricts choice to two high-temperature cuprate superconductors, (Bi,Pb)2Sr2Ca2Cu3Ox and YBa2Cu3Ox, and possibly to MgB2, recently discovered to superconduct at 39 K. Crystal structure and material anisotropy place fundamental restrictions on their properties, especially in polycrystalline form. So far, power applications have followed a largely empirical, twin-track approach of conductor development and construction of prototype devices. The feasibility of superconducting power cables, magnetic energy-storage devices, transformers, fault current limiters and motors, largely using (Bi,Pb)2Sr2Ca2Cu3Ox conductor, is proven. Widespread applications now depend significantly on cost-effective resolution of fundamental materials and fabrication issues, which control the production of low-cost, high-performance conductors of these remarkable compounds.

Date: 2001
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DOI: 10.1038/35104654

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