Zobrazeno 1 - 10
of 170
pro vyhledávání: '"H.-W. Neumüller"'
Publikováno v:
Superconductor Science and Technology. 18:1468-1472
Low-cost and commercially viable processes to fabricate coated conductors are necessary for application in electric-power technologies. We demonstrate the chemical solution growth of CeO2 buffer and YBCO layers on IBAD-YSZ/Hastelloy templates. Very g
Publikováno v:
Superconductor Science and Technology. 17:S259-S263
Promising results of static and dynamic investigations on various journal type test bearings encouraged us to develop a scaled-up HTS bearing, able to carry the HTS rotor of a 400 kW superconducting motor. The stator, a YBCO hollow cylinder of 203 mm
Publikováno v:
Physica C: Superconductivity. :1470-1473
The interaction between high temperature superconductors (HTS) and permanent magnets allows to realize an inherently stable contactless bearing without active feedback system. It has no wear, very low friction and allows operation at high rotational
Publikováno v:
Physica C: Superconductivity. 310:225-230
To demonstrate the possibility of manufacturing a HTS power transmission cable with low AC losses, we fabricated a 10 m long cable conductor and a cryosystem. The conductor was wound in a four-layer design out of 2 km Ag/Bi-2223 tapes. We determined
Publikováno v:
Superconductor Science and Technology. 11:902-908
A 10 m long HTS cable conductor was stranded with an industrial winding process from 2 km of Ag/Bi2223 tapes. It was installed in a vacuum cryostat and was force cooled by pressurized liquid nitrogen. DC- and AC-load tests were performed while varyin
Autor:
R. Wördenweber, Herbert C. Freyhardt, Bernd Stritzker, Wolfgang Schmidt, V. Kirchhoff, H.-W. Neumüller, Helmut Kinder
Publikováno v:
Journal of Alloys and Compounds. 251:366-372
The preparation of the switching element of a resistive superconducting fault current limiter requires the up-scaling of deposition techniques for thin YBa 2 Cu 3 O 7−δ (YBCO) films to large areas and high film thicknesses. For a projected 100 kVA
Autor:
C. Dineen, S R Hall, T.P. Beales, Laura Gherardi, P. F. Hermann, D. M. Jacobson, G. Bogner, A. Petitbon, M. Mölgg, L. Le Lay, C. M. Friend, H.-W. Neumüller, P. Caracino, P. Metra, M R Harrison
Publikováno v:
Superconductor Science and Technology. 8:909-913
Five leading European electrical companies have been collaborating within the framework of a BRITE/EURAM project with the aim of selecting and developing a production technology for the construction of underground power cables containing high-tempera
Autor:
H.-W. Neumüller, J. Wiesner, G. Wirth, G. Ries, M. Kraus, P. Kummeth, G. Saemann-Ischenko, C. Struller, M. Leghissa
Publikováno v:
Journal of Superconductivity. 7:783-786
An excellent tool to enhance the critical current density in superconductors is the controlled introduction of defects by irradiation damage. Irradiation with 2.65 GeV Au ions provides the generation of amorphous line defects. Polycrystalline (Bi, Pb
Publikováno v:
Journal of Materials Research. 9:1967-1972
Bi-Sr-Ca-Cu-O phases provide continuous manufacturing of tapes in long lengths using conventional techniques. Thick films of the BPSCCO 2223 phase [(Bi, Pb)2Sr2Ca2Cu3O10+x] were successfully prepared on Ag tapes by combining the processes of screen-p
Publikováno v:
Applied Superconductivity. 2:425-434
To investigate the influence of carbon on the formation and microstructure of B(P)SCCO-110-K-phase in Ag-sheathed tapes, powder in tube tape samples were prepared with calcined oxide-carbonate mixtures containing different amounts of carbon. The ther