The motional EMF in segments of the copper wire with
magnetic shielding is found according to the voltage lack in two coils with
partial shielding moving relative to the magnetic field lines. The first coil
moved across the Earth’s
magnetic field lines. The second one was located near the end face of the
rotating disk magnet with an axial magnetization. Permalloy foil wound around a
part of turns containing wire was used for shielding. The experiments result
reveals the penetrating ability of the magnetic field through the ferromagnetic
shield and shows the physical nature of the superposition principle. With this
in mind, a universal method for calculating EMF induced in a conductive body
has been provided as well as the concepts of magnetic field lines velocity and
acceleration have been introduced.
Cite this paper
Korolev, A. I. (2018). The Motional EMF in Conductors with Ferromagnetic Shield. Open Access Library Journal, 5, e4461. doi: http://dx.doi.org/10.4236/oalib.1104461.
Yashchuk, V., Lee, S. and Paperno, E. (2013) Magnetic Shielding. In: Budker, D. and Jackson Kimball, D., Eds., Optical Magnetometry, Cambridge University Press, Cambridge, 225-248. https://doi.org/10.1017/CBO9780511846380.013
Keshtkar, A., Maghoul, A. and Kalantarnia, A. (2011) Magnetic Shield Effectiveness in Low Frequency. International Journal of Computer and Electrical Engineering, 3, 507-513. https://doi.org/10.7763/IJCEE.2011.V3.370
Camacho, J.M. and Sosa, V. (2013) Alternative Method to Calculate the Magnetic Field of Permanent Magnets with Azimuthal Symmetry. Revista Mexicana de Física E, 59, 8-17.
Misuchenko, I. (2014) Eksperimental’noe issledovanie elektricheskogo polja vraschajuschegosja vokrug osi namagnichennosti kol’cevogo magnita. http://electricaleather.com/d/358095/d/elektricheskoe-pole- vraschayuschegosya-kolcevogo-magnita.pdf
