An integral formulation for eddy current analyses in axisymmetric configurations

A method for solving problems of electromagnetic field diffusion in axisymmetric configurations with linear conducting media is presented. The approach, which is based on lumped-parameter circuit modeling, has a number of theoretical and practical advantages in comparison with other methods currently used, particularly in dealing with problems where the coupling between the magnet system and the external feed network is important. The authors describe in detail the analytical basis and the numerical approach of the method and present its most interesting aspects together with a discussion on a number of critical problems faced during numerical implementation. In order to show the method´s capabilities and performance, some numerical results are given