AC LOSSES IN BI-2223 TAPES FOR POWER APPLICATIONS

Improved measuring procedures and interpretation efforts have shown th at the critical state model is fully applicable for describing the beh aviour of HTS tapes for power applications. By this means, we could co nsistently analyse magnetic and transport measurements and study possi ble inhomogeneities and geometrical peculiarities in BSCCO-2223 tapes. Examples of such an analysis are given in this contribution. Losses i n multistrand conductors require a more complex modellization and furt her development of the experimental procedures; the results of a.c. tr ansport measurements on a 13 m long, multilayer, prototype conductor s ample are also discussed here.