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Scale up of applications-ready practical Y-Ba-Cu-O coated conductors

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14 Author(s)
Selvamanickam, V. ; SuperPower, Schenectady, NY, USA ; Knoll, A. ; Xie, Y. ; Li, Y.
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YBa2Cu3Ox (YBCO) coated conductors have been produced in 100 m lengths in pilot scale facilities established at SuperPower. In addition to scaling up coated conductors to long lengths with high critical current, we have modified the basic conductor for enhanced in-field performance and low ac losses. In addition, our coated conductors have been produced in practical configurations in 4 mm widths and with a surround copper stabilizer. The conductors were slit first to a 4 mm width and then subjected to electroplating to apply the copper stabilizer. Mechanical and electrical properties of the complete conductor have been elaborately tested. 61 m of 4 mm wide, surround copper stabilized conductor was provided to Sumitomo Electric Industries who fabricated a 1 m cable using the conductor. The cable exhibited the lowest ac losses reported with HTS conductors. SuperPower also fabricated a pancake coil with 7.4 m of coated conductor, which generated a maximum magnetic field of 0.28 T at 77 K.

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Applied Superconductivity, IEEE Transactions on  (Volume:15 ,  Issue: 2 )