Results 261 to 270 of about 82,272 (307)

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 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 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 due to alternating current strips

IEEE Transactions on Power Apparatus and Systems, 1975
A two dimensional solution for the vector potential and eddy current loss in a plurality of conducting regions due to a plurality of current sources is presented. The solution is applicable to those problems with boundaries which may be aligned with the coordinate surfaces of an orthogonal system of separable coordinates.
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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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Eddy Current Losses of Coaxial Magnetic Gears

2018 XIII International Conference on Electrical Machines (ICEM), 2018
Reduction of eddy current losses is essential for magnetic gears efficiency enhancement. These losses are resulting in output torque reduction, especially in high rotational speeds and high gear ratios. In this paper, we developed an approach for determination of the eddy current losses of a coaxial magnetic gear.
V. Mateev, M. Todorova, I. Marinova
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Interstrand eddy current losses in Rutherford cable

Cryogenics, 1995
A continuum model is used to calculate the interstrand eddy current loss in the Superconducting Supercollider (SSC) magnets, and expressions are derived for the conductivities. An advantage of the model is that three contributions to the loss can be investigated separately: (1) the contribution of crossover conductance between strand layers; (2) the ...
W.J. Carr, V.T. Kovachev
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Eddy current loss calculation in multiconductor systems

IEEE Transactions on Magnetics, 1983
This paper presents the application of the finite element technique for calculating eddy current losses in multiconductor systems used in power transmission. This paper is a contribution to skin effect analysis in conductors and enclosures of arbitrary shapes.
J. Weiss, V. Garg, E. Sternheim
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Computing Eddy Current Losses in Reactor Coils

1988
Reactor coils are electrical components which serve (among others) the following purposes: to limit the current under system fault conditions, to distribute the load to parallel circuits, to reduce the starting current that occurs when elec- trical machines are switched on, to limit short-circuit currents in rectifier equipments.
Heinz W. Engl, Ewald Lindner
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