Maxwell’s theory of eddy currents in thin conducting sheets, and applications to electromagnetic shielding and MAGLEV

1992 ◽  
Vol 60 (8) ◽  
pp. 693-711 ◽  
Author(s):  
W. M. Saslow
Keyword(s):  
Eddy Currents ◽  
Electromagnetic Shielding ◽  
Thin Conducting

DIFFUSION OF PULSED EDDY CURRENTS IN THIN CONDUCTING PLATES

2008 ◽  
Author(s):  
T. W. Krause ◽  
C. Mandache ◽  
J. H. V. Lefebvre ◽  
Donald O. Thompson ◽  
Dale E. Chimenti
Keyword(s):  
Eddy Currents ◽  
Thin Conducting ◽  
Pulsed Eddy Currents

Use of variational methods to the eddy currents calculation in thin conducting plates

1978 ◽  
Vol 14 (5) ◽  
pp. 383-385 ◽  
Author(s):  
R. Sikora ◽  
J. Purczynski ◽  
W. Lipinski ◽  
M. Gramz
Keyword(s):  
Variational Methods ◽  
Eddy Currents ◽  
Thin Conducting

Determination of eddy current losses and hysteresis losses in magnetic circuits of electrical machines

2020 ◽  
pp. 54-58
Author(s):  
S. M. Plotnikov
Keyword(s):  
Eddy Current ◽  
Magnetization Reversal ◽  
Eddy Currents ◽  
Technical Problem ◽  
Electrical Machines ◽  
Eddy Current Losses ◽  
Hysteresis Losses ◽  
Magnetic Circuits ◽  
Core Losses ◽  
Reversal Frequency

The division of the total core losses in the electrical steel of the magnetic circuit into two components – losses dueto hysteresis and eddy currents – is a serious technical problem, the solution of which will effectively design and construct electrical machines with magnetic circuits having low magnetic losses. In this regard, an important parameter is the exponent α, with which the frequency of magnetization reversal is included in the total losses in steel. Theoretically, this indicator can take values from 1 to 2. Most authors take α equal to 1.3, which corresponds to the special case when the eddy current losses are three times higher than the hysteresis losses. In fact, for modern electrical steels, the opposite is true. To refine the index α, an attempt was made to separate the total core losses on the basis that the hysteresis component is proportional to the first degree of the magnetization reversal frequency, and the eddy current component is proportional to the second degree. In the article, the calculation formulas of these components are obtained, containing the values of the total losses measured in idling experiments at two different frequencies, and the ratio of these frequencies. It is shown that the rational frequency ratio is within 1.2. Presented the graphs and expressions to determine the exponent α depending on the measured no-load losses and the frequency of magnetization reversal.

ESTIMATION OF ELECTROMAGNETIC SHIELDING EFFICIENCY

2019 ◽  
Vol 78 (2) ◽  
pp. 181-189
Author(s):  
Ye. I. Gabrousenko ◽  
A. G. Holubnychyi ◽  
Zhengbing Hu ◽  
A. G. Taranenko ◽  
F. J. Yanovsky
Keyword(s):  
Electromagnetic Shielding
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