Modelling of EMC problems using TLM method

Abstract

The paper deals with the modeling of electromagnetic (EMC) problems in power systems using transmission line modeling (TLM) technique. A methodology to model sources and victims of electromagnetic interferences (EMIs) in terms of lumped equivalent circuits for the 3D EMC analysis is presented. The simulated circuits are modeled by generic series loads connected to the ports of the series condensed nodes in a standard TLM mesh. The proposed approach assures the description of the parasitic phenomena with an high level of accuracy in a wide range of frequencies, allowing the modeling of coupling mechanisms both at low and at high frequency in EMC problems without requiring their explicit modeling. The proposed approach is implemented in an EMC simulator and two case studies have been presented to explain and to validate the method.