Results 221 to 230 of about 330,391 (267)
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AC losses in superconducting solenoids
IEEE Transactions on Appiled Superconductivity, 2002This paper presents an analytical model to determine AC losses in monolayer and multilayer superconducting solenoids. The case of a transformer with several coils is also presented. This model is based on an infinite cylindrical geometry and the Bean model.
E. Vinot +3 more
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Journal of Applied Physics, 1968
Since the discovery of technologically interesting high-field superconductors in 1961 more than 50 experimental and theoretical publications have appeared which are concerned with the relevant ac loss mechanisms. These papers are reviewed, and certain of the experimental findings are unified in the light of the present day understanding.
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Since the discovery of technologically interesting high-field superconductors in 1961 more than 50 experimental and theoretical publications have appeared which are concerned with the relevant ac loss mechanisms. These papers are reviewed, and certain of the experimental findings are unified in the light of the present day understanding.
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Cryogenics, 1975
Abstract 60 Hz losses, measured at 4.2 K, are reported for a number of V3Ga tapes reacted between 625°C and 775°C for various lengths of time. The losses are shown to depend mainly on the bulk critical current density Jc, except at low fields (≲ 500 Oe) where surface currents, and hence surface roughness, play a dominant role.
O. Horigami, J.F. Bussiere, Y. Tanaka
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Abstract 60 Hz losses, measured at 4.2 K, are reported for a number of V3Ga tapes reacted between 625°C and 775°C for various lengths of time. The losses are shown to depend mainly on the bulk critical current density Jc, except at low fields (≲ 500 Oe) where surface currents, and hence surface roughness, play a dominant role.
O. Horigami, J.F. Bussiere, Y. Tanaka
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AC losses of transposed superconductors
IEEE Transactions on Magnetics, 1975Eastham and Rhodes published results of loss measurements on transposed superconducting NbTi cables and concluded basing on an extrapolation to very large numbers of wires that transposed superconductors could be used favourably in cables for power transmission. There are some reasons to question the correctness of their extrapolation.
D. Eckert, G. Enderlein, F. Lange
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Losses in AC Superconducting Coils
1989AC superconducting wires are being developed so as to be applied to electrical machineries. The main concerns in developing the AC superconducting wires are AC losses. In order to assess AC losses in the form of winding, we made two AC superconducting coils having different rated capacities, 500kVA and 20kVA.
H. Kasahara +3 more
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1994
The main issues in the research on ac losses in practical superconductors and the developments of the last decade are reviewed. Moreover the impact of the knowledge on the development of superconducting magnet systems as for tokamaks and particle accelerators is discussed.
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The main issues in the research on ac losses in practical superconductors and the developments of the last decade are reviewed. Moreover the impact of the knowledge on the development of superconducting magnet systems as for tokamaks and particle accelerators is discussed.
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AC losses in coated conductors
Superconductor Science and Technology, 2010Future use of coated conductors in electric power applications like transmission cables, transformers or fault current limiters is sensitive to the amount of dissipation in the AC regime. This paper analyses factors controlling AC loss of coated conductors in typical configurations: the self-field case when transport current generates the magnetic ...
F Gömöry +4 more
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AC losses in high-temperature superconductors: revisiting the fundamentals of the loss modelling
Physica C: Superconductivity, 1998The fundamentals of the electromagnetic modelling of high-temperature superconductors are discussed. Special attention is paid to intrinsic features of high-temperature superconductors different to those of low-temperature superconductors. Examples of those features are strong thermal fluctuations, which results in enhanced flux creep and slanted E(J ...
Paasi, Jaakko, Lahtinen, Markku
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An Analysis of AC loss of Bi-2212 CICC
2018 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD), 2018With the development of magnetic confinement fusion research, more and more stronger magnetic fields are needed. Commonly used superconductor of Nb3Sn in high-field magnets which does not have much potential for improvement. We need to develop conductor with new superconducting materials. Bi2Sr2CaCu2Ox is such a promising material.
Yuxiang He +3 more
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AC Loss in a Composite Hyperconductor
1990For high magnetic field operation at cryogenic temperatures near 20° K the best lightweight conductor presently available is high-purity aluminum, sometimes referred to as a hyperconductor. However, because of its high purity the material is mechanically weak, and because of its high conductivity the conductor must be fabricated as fine twisted strands
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