Abstract

The Bi-2223 high-temperature-superconductor (HTS) powder-in-tube (PIT) tape, with useful performance for long lengths, has provided the ability to construct a wide range of HTS electric power components. The eventual commercialization of HTS power apparatus is primarily dependent on lowering the cost of HTS conductor. The present performance and cost of state-of-the-art Bi-2223 HTS tape, although acceptable for prototype construction, is viewed as a major factor that may compromise eventual commercialization. The so-called second generation development, with emphasis on conductors employing HTS YBCO films, is viewed as the solution to this performance and cost issue. The potential for Bi-2212 for producing a low-cost HTS as an alternative to Bi-2223 PIT (and YBCO) will be discussed with some recent results on Bi-2212 coated conductor development.

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