Phenomenon of the eddy current exceeding the exciting magnetomotive force

• Autorzy: Vogel R.
• Języki publikacji: PL

Abstrakty

EN

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.

Słowa kluczowe

EN

analytic field solution; eddy current; magnetic coupling; phenomenon

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2013
• Tom: Vol. 62, nr 1
• Strony: 123--140
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Vogel R.

• TU Dortmund University, Chair of Electrical Drives and Mechatronics Emil-Figge-Str. 70, 44227 Dortmund, Germany,

Bibliografia

• [1] Kriezis E.E., Tsiboukis T.D., Panas S.M., Tegopoulos J.A., Eddy Currents: Theory and Applications, Proceedings of the IEEE 80: 1559-1589 (1992).
• [2] Schunk H., Stromverdrängung. Dr. Alfred Hüthig Verlag (1974).
• [3] Smythe W.R., International Series in Pure and Applied Physics, Static and Dynamic Electricity,Third Edition, McGraw-Hill, pp. 368-414 (1968).
• [4] Stoll R.L., The Analysis of Eddy Currents, Clarendon Press, Oxford (1974).
• [5] Tegopoulos J.A., Kriezis E.E., Studies in Electrical and Electronic Engineering. Bd. 16: Eddy Currentsin Linear Conducting Media, Elsevier (1985).
• [6] Bewley L.V., Two-dimensional fields in electrical engineering, Dover Publications, Inc., New York, pp. 73-81 (1963).
• [7] Simonyi K., Theoretische Elektrotechnik, 5. Auflage, VEB Deutscher Verlag der Wissenschaften, Berlin (1973).
• [8] Bronstein I.N., Semendjajew K.A., Taschenbuch der Mathematik, 2. Auflage, Verlag Harri Deutsch (1995).