Broad-band modeling of a realistic power converter shield for electric vehicle applications

This paper deals with the broad-band modeling of a realistic power converte r shield used in an electric vehicle. To validate such a model, comparisons between computation and measurements are required. As it is not practical to characterize experimentally the true radiation of a power converter thro ugh its enclosure, a reciprocal approach has been defined in which the encl osure is illuminated by a plane wave (receiving configuration). The associa ted experimental setup has been carefully defined and tested. At lon freque ncy, the model is based on radiation through apertures in a simple cavity. At higher frequency, the Aseris-BE code, which is based on the boundary int egral equations technique, has been used for computation. An optimal and re alistic mesh of the enclosure suitable for the Aseris-BE code has been buil t by making numerous comparisons between computation and measurements, whic h have shown how to improve the mesh.