Eur. Phys. J. Appl. Phys. 47, 31102 (2009)
https://doi.org/10.1051/epjap/2009102

Analytical computation of an AC machine external magnetic field

¹ Univ. Lille Nord de France, 59000 Lille, France
² UA, LSEE, 62400 Béthune, France

Corresponding author: raphael.romary@univ-artois.fr

Received: 18 July 2008
Revised: 20 February 2009
Accepted: 2 April 2009
Published online: 12 June 2009

Abstract

This paper presents an analytical approach to estimate the magnitude of a flux density component at a point located outside an AC machine. The study uses the concept of attenuation coefficients which are determined using several hypotheses. The developments consider the different media according to they are flowed by eddy currents or not. Then, the calculations are performed in each medium.