Results 301 to 310 of about 84,391 (350)

Magnetic Characteristics and Excess Eddy Current Losses

2009 IEEE Industry Applications Society Annual Meeting, 2009
To study the fundamental essence of excess losses and to achieve an accurate core loss separation formula, a dynamic finite element model for the non-linear hysteresis loop of laminations has been established. In the model, Maxwell's Equations are solved for the hysteresis character in the magnetic lamination, using the Galerkin finite element method ...
Yu Zhang, Ming-C. Cheng, Pragasen Pillay
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No-load copper eddy-current losses

Journal of the A.I.E.E., 1926
One of the factors which is sometimes responsible for very considerable losses in rotating machines is that of eddy-current losses in the copper conductors resulting from slot leakage flux produced by the main flux. These losses occur at no-load as well as under load and should not be confused with the copper losses resulting from the slot leakage flux
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Eddy Current Losses in Conducting Slabs

IEEE Transactions on Power Apparatus and Systems, 1971
This paper considers the problem of calculating the eddy current losses in a rectangular conducting slab in a magnetic field which would be uniform if the slab were not present. The length axis is perpendicular to the uniform field, but there may be an angular displacement' about this axis.
J. McWhirter, M. Thomas
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Eddy current losses at cryogenic temperatures

IEEE Transactions on Magnetics, 1993
The effect of thermal processes on eddy-current losses in the structural elements of cryogenic and superconducting devices are analyzed. Maxwell's equations coupled with the heat-conduction equation are solved, taking into account the dependence of resistivity, heat capacity, and heat-transfer coefficient on temperature.
V. Sokolovsky, V. Meerovich, M. Slonim
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Intersheet eddy-current loss in laminated cores

Electrical Engineering, 1937
CORE LOSS in laminated structures subjected to an alternating magnetomotive force is made up of a hysteresis loss and an eddy-current loss. In modern power transformers the eddy-current loss is approximately 1/4 to 1/3 of the total loss.
L. V. Bewley, Hillel Poritsky
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Eddy Current Losses in Armature Conductors

Transactions of the American Institute of Electrical Engineers, 1920
This paper is an extension to the author's paper in Vo. XXXIX Pages 997 to 1047 on Eddy Current Losses in Armature Conductors. In this present paper additional formulas are given for the cases where transposed coils are used and also methods given for quickly estimating the increased loss due to eddy currents.
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Tooth-frequency eddy-current loss

Electrical Engineering, 1937
A method of recording, by means of an oscillograph, the eddy currents in various parts of the cross section of a squirrel-cage-rotor bar is presented in this paper. From such records the magnitude of the power loss caused by eddy currents, and its variation with load, may be determined. A series of tests of this nature has been made; the results, which
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Eddy Current Losses of Winding of Transformer

EUROCON 2005 - The International Conference on "Computer as a Tool", 2005
This paper deals with the transformer losses especially eddy current losses in windings. Nowadays, there is the stress on the possibilities of lowering losses and optimisation of transformer dimension. Calculations were provided with using FEM method.
M. Krasl, R. Vlk, J. Grosiar
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Eddy-current losses in saturated cylinders

IEEE Transactions on Communication and Electronics, 1964
This paper discusses the process of magnetization and the eddy-current losses in saturated cylinders subjected to a sinusoidal magnetic field. Maxwell's equations are solved in cylindrical co-ordinates for an assumed magnetization curve B = B s sign H.
B. Béland, J. Robert
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Eddy-current losses in unbonded tubes

Proceedings of the Institution of Electrical Engineers, 1975
A series solution for the eddy-current loss in thin isolated cable sheaths, busbar enclosures, water cooling pipes etc. has been developed using Carter's method. The theory, which takes into account the magnetic field set up by the tube eddy currents themselves, can be applied to any system where the primary conductor current within a tube is coaxial ...
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