Contribution à l'Étude du Rayonnement des Câbles Soumis aux Signaux de l'Électronique de Puissance dans un Environnement Aéronautique

The growing-up of electrical loads embarked on the "more electric" aircraft imposes to pay more and more attention for the electromagnetic compatibility. The use of power electronics converters to drive electromechanic actuators, involves the flowing of common mode currents in power cables and the whole systems, and consequently the generation of electromagnetic fields. The tolerances on emissions of the aeronautical electric equipments results in the civil aeronautical standard DO-160E. This study allows us to predict the modes of radiation of several architectures of connections of power cables supplied by power electronics signals, in the specific conditions imposed by the standard DO-160E and according to their mode of connection to ground. We present at first the modelling of an electrical system constituted by a static converter with a versatile configuration, a power cable and an electrical load. This modelling is used to determine the electromagnetic field radiated by the power cable. Secondly, we validate the theoretical results by measurements of radiated H and E fields on a versatile and representative bench test.