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Compact GdBa2Cu3O7-δ coated conductor cables for electric power transmission and magnet applications



Daniel C. van der Laan, Xifeng Lu, Loren F. Goodrich


Bundling high-temperature superconductors together to form high current cables is required in, for instance, power transmission and low-inductance magnet applications. Cabling techniques that have been applied so far have not resulted in compact, mechanically robust, high-current cables that remain flexible. Here we demonstrate that the cabling technique that we have introduced only recently enables the construction of cables from high-temperature superconducting coated conductors that meet these requirements. We present a cable, wound from GdBa2Cu3O7-δ coated conductors, that has an outer diameter of only 7.5 mm and has a critical current of about 2800 A at 76 K and self-field. The compact size and level of flexibility make the cable suitable for Navy and Air Force power transmission, and would allow superconducting transmission lines that have been installed in the electric power grid to be reduced in diameter. The potential of raising the engineering current density, while maintaining flexibility, make them also suitable for high-field magnet applications.
Superconductor Science & Technology


superconducting cable, coated conductors, high-temperature superconductors, strain


van, D. , Lu, X. and Goodrich, L. (2011), Compact GdBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-&#948;</sub> coated conductor cables for electric power transmission and magnet applications, Superconductor Science & Technology (Accessed February 21, 2024)
Created February 10, 2011, Updated February 19, 2017