Results 301 to 310 of about 175,241 (351)

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 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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Eddy current and hysteresis losses in ferromagnetic media

IEEE Transactions on Magnetics, 1998
This paper is a contribution to the evaluation of losses in ferromagnetic media, due to eddy currents and magnetic hysteresis, the field source being the time harmonic induced e.m.f. The fundamental field equations are solved numerically by using a finite element formulation, corresponding to the space discretization, and a second order trapezoidal ...
V.M. Machado, A.L. Ribeiro
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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 iron losses in axially laminated brushless motors

IEE Proceedings - Electric Power Applications, 1995
The paper presents an analytical procedure for the evaluation of iron losses produced by eddy currents in the rotor sheets of axially laminated VR motors. These losses cannot be neglected especially in inverter fed closed loop operations. To simplify the eddy currents computation, the magnetic field in iron sheets is obtained by separately considering ...
MARIGNETTI, Fabrizio, S. BOBBIO, A. DEL PIZZO, E. PAGANO   +3 more
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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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Large signal eddy current losses beyond 100kHz

IEEE Transactions on Magnetics, 1984
Eddy current losses under large flux excitation in Mn-Zn ferrite cores and both polycrystalline and amorphous metallic cape cores of thickness 4μm to 28μm are measured in the frequency range up to 1MHz. Beyond 100kHz, the complex behaviors of magnetization in metallic cores as seen in the lower frequency range disappear and eddy current losses are only
null Yo Sakaki, T. Sato
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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 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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