Author(s)

R.J. Hill, S. Brillante & P.J. Leonard

Abstract

The use of the finite-element (FE) method to calculate the potentials and fields surrounding the track in railway traction systems has concentrated on two- dimensional modelling exploiting longitudinal track symmetry. This paper introduces a three-dimensional FE track model, involving solution of the diffusion equation to calculate ground current flow in a DC traction system. It is shown that difficulties concerned with data accuracy, numerical convergence and verification need to be solved. 1 Introduction The problem addressed in this paper is the development of modelling for the calculation of electromagnetic (EM) fields around railway track using three- dimensional (3D) finite elements (FE). The main difficulties are in reducing the

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