Corrélation entre le fonctionnement électrique et le rayonnement magnétique en champ proche d'un variateur de vitesse électronique

The static converters constitute a powerful means of energy transformation. Nevertheless, they generate important electromagnetic disturbances during switching. In this manuscript, we study the correlation between electric working and near magnetic radiation of electric converter. For this, we achieved a new near filed test bench. The first use of the new bench was made on an academic system like a Buck converter. This study constituted a good means for the bench validation, the comparative results are satisfactory. The second application was more industrial. It enabled us to identify the main sources. Simplifying assumptions enabled us to establish first order models valid until the medium frequency. These models enable us to predict the electromagnetic performances of the main sources before design phase.