Results 311 to 320 of about 176,229 (354)

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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On the estimate of eddy current losses in current carrying conductors

Journal of Applied Physics, 2000
It is shown that ohmic losses in current carrying conductors at nonzero frequency can be decomposed into two parts. One part is due to a current distribution that would have existed within the conductor at zero frequency (dc current distribution).
G. Friedman, I. D. Mayergoyz
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Eddy current losses in round conductors

27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004., 2005
Eddy current losses in round conductors are discussed. An analytical approximation is presented. The proposed solution considers the wire diameter, the number of layers and wires in parallel, the distance from a possible air gap, the horizontal and vertical copper filling factors.
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Eddy-current power loss in laminated iron cores

ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196), 2002
This paper presents an analysis of power losses in gapless laminated iron cores at high frequencies. First, the magnetic field intensity is found. Next, the eddy current density is determined. Finally, expressions for the power loss density and the power loss per unit volume of an iron core are derived.
Kenroy A. Howard, Marian K. Kazimierczuk
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Eddy-Current Losses in Rectifier Transformers

IEEE Transactions on Power Apparatus and Systems, 1970
Two methods are developed for evaluating the eddy- current losses occurring in a rectifier transformer during operation, i.e., when carrying pulsating currents. The first is based on the analysis of the whole waveshape; the second starts from the harmonic composition of current curves.
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Eddy current loss in grooved solid poles

IEEE Transactions on Magnetics, 1978
In this paper, the approximate equivalent circuit of the grooved solid pole synchronous motor is derived. In the approximate equivalent circuit, the upper part (grooved part) and the lower part (core part) of the grooved solid pole synchronous motor are separated.
H. Yamada, M. Nanba
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Eddy current losses in PM canned motors

The XIX International Conference on Electrical Machines - ICEM 2010, 2010
Different approaches for the determination of eddy current losses in PM canned motors are presented. After a general description of the problem, an analytical model will be derived, which will be compared to numerical FEM calculations. In addition, the influence of the most important design parameters of the can will be discussed.
Y. Burkhardt, G. Huth, S. Urschel
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