Analysis and modeling of the magnetic near fields emited by an IGBT and by a power diode generic radiating model for active components

In this paper, we present the modeling of radiating emissions of an IGBT and of a power diode. Firstly, we have introduced the technique of measuring the magnetic near field. Secondly, we have studied the magnetic field radiated above an IGBT and the modeling method. The latter is an electromagnetic inverse method based on genetic algorithms. We have applied our method to find an equivalent radiating model of an IGBT. Another model has been developed for a power diode. The models for the two components have been validated. A generic model for the active components has been finally proposed at the end of the paper.