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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:54 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Biophysics and Medical Physics;Electricity and Magnetism
Title:
Magnetic circuit having time varying magnetic junctions
Authors:
Oana Maria Pena(1), Ovidiu Pacala(1)
Affiliation:
(1)Barney Test Scientific
E-mail
oana_maria1986@yahoo.com
Keywords:
magnetic circuit, time varying junctions, flux, magneto motive force, electromotive force
Abstract:
In this paper the magneto motive force is calculated for a magnetic circuit that includes a number of air gaps of time varying length and cross sections, which are used as magnetic junctions.
Knowing that the magneto motive force is directly related to the total magnetic flux and to the entire circuit reluctance is calculated with respect to the magnetic junction cross sections, assuming a given time varying function for the magnetic junction cross sections. The time varying magnetic flux dependence of the junction’s time varying reluctance is also considered. Each of the junction reluctance is, on its turn, correlated to both geometry of the respective magnetic junction and the length of the air gap.
The equation shows how a time varying magnetic flux could be controlled by both the geometry of the cross sections magnetic junctions and the time varying air gaps lengths. Thus, an electromotive force (in a coil or conductor) of a controlled wave shape may be induced by the resulted time varying magnetic field.
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