|HIGH-TEMPERATURE SUPERCONDUCTING MATERIALS OF THE 1-ST AND THE 2-ND GENERATION AND PROSPECTS FOR THEIR APPLICATION IN ELECTRIC ENGINEERING|
|N. A. CHERNOPLEKOV, L.I. CHUBRAEVA|
Since 1986 main attention of electric engineering specialists was paid to the Yttrium-based bulks or Bismuth tapes, produced by power-in-tube technology. The latter presents the wire of the 1-st generation. The bulks were applied in inductors of electrical machines, fault current limiters (FCL) and models of cables. The tapes were used for the windings of electrical machines, FCL and cables. But as Bi-2223 has relatively poor current density in external magnetic fields at 77 K, and relatively high price, the problem of economical efficiency appears.. Therefore, serious works has started in many countries to develop the wires of the 2-nd generation of HTSC, based on application of Y123 and new sophisticated technological processes. Application of Y-based wires in combination with LN2 operating temperatures will permit to widen practical application of SC in electrical devices.
|Key Words:||high-temperature superconductivity, powder-in-tube technology, ISD, IBAD, RABiTS processing, economical efficiency, electrical equipment|