Zobrazeno 1 - 10
of 23
pro vyhledávání: '"H.-W. Neumuller"'
Autor:
P Du, H.-W. Neumuller, Wolfgang Schmidt, Haosheng Chen, J.C. Sun, Zhen Wang, Z. Han, S.S. Wang
Publikováno v:
Physica C: Superconductivity and its Applications. :580-583
We have fabricated CeO 2 buffer layers on IBAD-YSZ/Hastelloy substrates via dip-coating sol–gel method using inorganic salts as starting materials. X-ray diffraction (XRD), scanning electron microscopy (SEM) and scanning probe microscope (SPM) were
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:2030-2033
HTS-excited synchronous machines provide substantial advantages with respect to efficiency, size, and operational behavior, with special focus on ship or off-shore applications. A 400 kW machine had been designed and built as technology demonstrator
Autor:
P. van Hasselt, Rainer Hartig, Peter Kummeth, Wolfgang Rzadki, M. Frank, Joachim Frauenhofer, Peter Massek, Heinz Schmidt, H. Rothfischer, H.-W. Neumuller, G. Nerowski, W. Nick, Bernd Wacker
Publikováno v:
IEEE Transactions on Applied Superconductivity. 16:1465-1468
Main applications for rotating electric synchronous machines are given as generators and motors; a small niche can also be found in synchronous condenser-applications. High temperature superconducting (HTS) rotating machines show several significant
Autor:
Bernd Wacker, Wolfgang Rzadki, M. Frank, Joachim Frauenhofer, Rainer Hartig, G. Nerowski, Wolfgang Nick, H.-W. Neumuller
Publikováno v:
Superconductor Science and Technology. 19:S114-S117
We report on the successful manufacture and testing of the Siemens 400 kVA HTS synchronous motor, which has been in operation for over 3 years, and on the progress of the 4 MVA synchronous motor/generator, which has been manufactured and is now in a
Publikováno v:
Physica C: Superconductivity. 401:135-139
We present results on DC current carrying capability and AC transport current losses of cabled conductors assembled from multifilamentary (PbBi)2Sr2Ca2Cu3O10+x tapes. The DC critical current of cabled conductors lies systematically below the sum of c
Autor:
M. Munz, Bernhard Fischer, H. Krauth, A. Szulczyk, T.J. Arndt, H.-W. Neumuller, Martino Leghissa, J. Gierl
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 11:3261-3264
For the use of silver or silver-alloyed Bi-2223 tapes in different applications of power engineering, very good electrical and mechanical properties are required. Besides high critical current densities of up to 100 kA/cm/sup 2/ the tapes have to cop
Autor:
H.-W. Neumuller, Martino Leghissa, Wolfgang Hässler, Bernhard Fischer, J. Gierl, Marijn Pieter Oomen, R. Nanke, V. Haas, J. Rieger, Thomas Dr Berthold, M. Schubert
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 11:2943-2946
Multifilamentary Bi-2223 tapes for AC applications in HTS transformers are studied. By twisting the filaments in tapes with AgMg sheath and Ag matrix the parallel field AC loss at power frequencies is lowered by more the 50% for the optimum twist len
Publikováno v:
Physical Review B. 62:9808-9817
We measured the dependence of the remanent magnetization of multifilamentary $(\mathrm{P}\mathrm{b},\mathrm{B}\mathrm{i}{)}_{2}{\mathrm{Sr}}_{2}{\mathrm{Ca}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{10+x}$ tapes on the angle between tape surface and magneti
Autor:
J. Wiezoreck, J. Rieger, Wolfgang Nick, H.-W. Neumuller, R. Schroth, P. van Hasselt, F. Schmidt, Martino Leghissa
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:406-411
The Siemens company is developing a high-temperature superconducting (HTS) 110 kV/400 MVA cable for future power transmission systems in densely populated areas. The cable consists of coaxial conductors made of 2223 BPSCCO multifilament tapes, a LN2-
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:2480-2485
Bi-2223 tapes in different variations represent a good basis to build up prototypes for power applications. With respect to these applications we produce 55 filament tapes of lengths up to 600 m carrying currents of 57 A. A statistical analysis confi