Objectif Objectives and content The proposal research aims at developing a Bi(2223) high temperature superconductor tape for the special purpose to carry alternating currents with minimised losses. These kind of tapes are important for the development of AC loaded devices like superconducting power cables, transformers or energy storage systems (SMES) using high temperature superconducting coils. The realisation of such low AC loss tapes requires tape properties being completely different from the presently existing Bi(2223) /Ag two component composites. First an enhanced number of superconducting filaments (> 19) with cross section dimensions smaller than 10 m and a filling ratio of > 25 % have to be realized restricting on preparation methods suitable for long lengths. A further modification is a twist of the filaments along the wire with twist pitches in the order of 10 mm without or negligible influence on the transport current capability. A severe disadvantage of the presently used Ag matrix materials is their high electrical conductivity which favours electrical coupling of the filaments. Therefore the most innovative challenge of the present proposal is the development of a multicomponent tape configuration using material combinations which increase the electrical resistance between the filaments by at least two 'orders of magnitude, but maintaining a conductivity along the tape good enough for thermal stabilisation and which still allow oxygen exchange of the filament with the heat treatment atmosphere. The developed low AC loss Bi(2223) tapes will intensively be investigated with respect to AC losses and mechanical and superconducting behaviour to characterise their properties with respect to practical use. Final tape lengths of e > 100 m with projected transport currents densities of 8000 Acm-2 overall will be tested in power cable arrangements through industrial developers and suppliers to evaluate their improved properties and their potential for industrial application. Champ scientifique engineering and technologymaterials engineeringcompositesnatural sciencesphysical scienceselectromagnetism and electronicssuperconductivity Programme(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Thème(s) 0202 - New methodologies for product design and manufacture Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT Contribution de l’UE Aucune donnée Adresse 5,Hermann von Helmholtz Platz 1 76344 EGGENSTEIN-LEOPOLDSHAFEN Allemagne Voir sur la carte Coût total Aucune donnée Participants (8) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE Royaume-Uni Contribution de l’UE Aucune donnée Adresse Prince Consort Road, Blackett Laboratory - Imperia SW7 2BZ LONDON Voir sur la carte Coût total Aucune donnée Istituto Nazionale per la Fisica della Materia Italie Contribution de l’UE Aucune donnée Adresse Via Dodecaneso 33 16146 GENOVA Voir sur la carte Coût total Aucune donnée National Grid Company plc Royaume-Uni Contribution de l’UE Aucune donnée Adresse Kelvin Avenue KT22 7ST Leatherhead Voir sur la carte Coût total Aucune donnée PIRELLI CAVI E SISTEMI SPA Italie Contribution de l’UE Aucune donnée Adresse Viale Sarca 222 20126 MILANO Voir sur la carte Coût total Aucune donnée Siemens AG Allemagne Contribution de l’UE Aucune donnée Adresse 100,Paul-Gossen-Straße 91052 Erlangen Voir sur la carte Coût total Aucune donnée Swissmetal Works Ltd Suisse Contribution de l’UE Aucune donnée Adresse 50,Weidenstrasse 4143 Dornach Voir sur la carte Coût total Aucune donnée UNIVERSITY OF GENEVA Suisse Contribution de l’UE Aucune donnée Adresse 24,Quai Ernest Ansermet 24 1211 GENEVE Voir sur la carte Coût total Aucune donnée UNIVERSITY OF TWENTE Pays-Bas Contribution de l’UE Aucune donnée Adresse 7500 AE ENSCHEDE Voir sur la carte Coût total Aucune donnée