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Thermal Analysis of Superconducting Traction Transformer
2008 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2008The paper deals with thermal analysis of the superconducting single-phase high temperature superconductivity (HTS) traction transformer. The purpose is to investigate a thermal distribution of a heat in a cryogen with liquid nitrogen using a FEM software and program Fluent.
V. Hrabovcova +3 more
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The feasibility of superconducting power transformers
Cryogenics, 1969Abstract The feasibility of making a 600 MVA 400 kV power transformer with superconductive windings to save I 2 R losses is discussed, and the economic incentive assessed. Despite the radical change in concept, the transformer would be roughly the same size, shape, and weight as a conventional one.
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Application of Superconducting Technology to Power Transformers
IEEE Transactions on Power Apparatus and Systems, 1981We have developed a detailed conceptual design for a 1000 MVA, 500/22 kV line-to-line, 1300 BIL power transformer which uses superconducting windings. The design uses a multiple winding configuration which is current limiting under fault conditions.
H. Riemersma +5 more
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Parameters of high-temperature superconducting transformers
Thermal Engineering, 2015Parameters of the high-temperature superconducting (HTSC) transformer with a core-type magnetic circuit and with coaxial and symmetrical interleaved windings made of the first-generation HTSC wire with a localized magnetic field are considered. The parameters of the most widespread core-type transformer with a coaxial HTSC winding are compared with ...
E. P. Volkov, E. A. Dzhafarov
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Superconducting transformer with a rotating magnetic field
Thermal Engineering, 2012The results of investigations into the physical model of a superconducting transformer with a rotating magnetic field with separate excitation winding are presented.
E. P. Volkov, E. A. Dzhafarov
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Superconducting coaxial turn transformer
Cryogenics, 1990Abstract The concept of a superconducting coaxial turn transformer is presented. The turns enclose each other like hoses and the circularly wound warm iron core encloses the coils outside the cryostat. This concept promises some remarkable advantages over other geometries.
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Conductor losses in superconducting transformers
Cryogenics, 1969Abstract An estimate is made of the losses in superconducting transformer windings. If these are not to be excessive, the transformer has to have a large rating.
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Superconducting Transformer Design and Construction
2010This thesis first outlines the testing undertaken on a partial core superconducting transformer under open circuit, short circuit, full load and endurance test conditions. During the endurance test, a failure occurred after 1 minute and 35 seconds. During the failure, voltage dipping and rapid liquid nitrogen boil off was observed.
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Sweeping a persisting superconducting magnet with a transformer
Cryogenics, 1982Abstract A method for sweeping a persisting superconducting magnet is described. The field sweep is achieved by including in the superconducting loop of the magnet a coil which acts as the secondary coil of a transformer. Variation of the current in the primary coil of the transformer, controlled from outside the cryostat, causes the field-sweeping ...
G.F. Spencer, P.W. Alexander, G.G. Ihas
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A study of the structural phase transformation and superconductivity in
Journal of Physics: Condensed Matter, 1998Specific heat and magnetization measurements on the hard superconductor confirm the presence of a structural phase transformation at 117 K and a superconducting transition temperature of 9 K. Above 117 K the compound has the cubic Laves phase C15 structure. High-resolution neutron powder diffraction measurements reveal that below 117 K there is a mixed
M J Parsons +7 more
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