Permanent-Magnet System Field Distribution on the Surface of Smooth FER Romagnetic Core

Vasiliy Germanovich Chirkin¹, Vladimir Ivanovich Goncharov¹, Sergey Vladimirovich Shirinskii¹, Lev Yurievich Lezhnev² and Dmitry Anatolyevich Petrichenko²

¹National Research University “Moscow Power Engineering Institute” 111250, Russia, Moscow, Krasnokazarmennayastr, 14. ²Moscow State University of Mechanical Engineering (MAMI) 107023, Russia, Moscow, B. Semenovskaya str., 38.

DOI : http://dx.doi.org/10.13005/bbra/2222

ABSTRACT: The known analytical solution of the field problem considering magnetic field of a thin linear conductor placed above smooth ferromagnetic core have been used to analyze the normal component of the flux density distribution created by a system of permanent magnets on the surface of a core. Ampere model of a permanent magnet initially have been used with the assumption of lack of other ferromagnetic objects. Then a number of numerical experiments have been carried out to take into account ferromagnetic elements in the vicinity of the permanent magnets and graphical dependences of the flux density and magnet sizing were obtained.

KEYWORDS: Electric machine; Permanent magnet; Analytical expression; Finite-element modeling; Magnet sizing

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