EMI of large power systems: magnetic field calculation by substituting surface quantities for complex sources

¹ LSEE - Université d'Artois, FSA, Technoparc Futura, 62400 Béthune, France
² Institute of Mechatronics and Information Systems, Technical University of Lodz, Poland Ul. Stefanowskiego 18/22, 90-924 Lodz, Poland

Corresponding authors: ewa.napieralskajuszczak@univ-artois.fr daniel.roger@univ-artois.fr komeza@p.lodz.pl carl.schulz@fsa.univ-artois.fr

Received: 18 January 2007
Revised: 20 March 2007
Accepted: 4 May 2007
Published online: 28 June 2007

Abstract

The aim of this research is the elaboration of a method allowing simple simulation of electromagnetic interferences (EMI) of complex electric systems. The method presented in this paper allows the replacement of the electromagnetic active objects by simple closed surfaces that surround each source. The flux density components are calculated on these surfaces using standard 3D finite element software separately for each object. The magnetic flux density in every point of the free space around the system is calculated with an analytical formula. The main topic of the paper is the definition of the limits of the discussed method.