Abstract
High temperature superconducting (HTS) cables with RE-123 coated conductors are expected to lower AC loss compared to that with BSCCO cable. Sumitomo Electric Industries, Ltd. (SEI) has been developing not only BSCCO wires but also RE-123 coated conductors. Recently, SEI has developed a RE-123 coated conductor with a new type of textured metal substrate (Clad-type). The clad-type substrate has lower magnetization loss and higher mechanical strength compared with a nickel alloy substrate. To clarify the potential of this novel substrate for AC cable application, a 2-layer cable conductor was manufactured. It shows good AC loss characteristics, and the measured AC loss was less than 0.1 Wm−1 at 1 kArms and 60 Hz. The influence of the magnetism of the clad-type substrate on AC loss in the cable conductor is much smaller than that of nickel alloy substrate. The novel coated conductor with clad-type substrate is suitable for AC cable application.
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