Phenomenon of the eddy current exceeding the exciting magnetomotive force

Archives of Electrical Engineering

Roman Vogel¹ 

关键词: analytic field solution;    eddy current;    magnetic coupling;    phenomenon;   

DOI  :  10.2478/aee-2013-0009

来源: Versita

【 摘 要 】

Harmonic flux penetrating solid conductive material causes eddy currents inside. It seems plausible that its magnitude does not exceed the exciting magnetomotive force (mmf). However, under certain circumstances the opposite occurs. This article deals with a special case in which the eddy current is approximately 13% higher than the exciting mmf. An analytical field solution, a finite element calculation and a measurement proving this phenomenon are presented. A special flux linkage is turned out to be the reason for this phenomenon. Finally, another example with higher pronounced mmfexceeding in a coil is presented.

【 授权许可】

Unknown