Dynamically adapting equivalent circuit model describing the EMI behaviour of magnetic components

It is necessary to take the parasitic elements of passive components into consideration in order to predict generated EMI noise of converters and power electronic systems. Parasitic capacitances in magnetic components usually form the major coupling path. Therefore these capacitances must be known in order to predict the noise generation by simulation. This paper presents a dynamically adapting equivalent circuit model of magnetic components based on two separate 2-D FEM simulation runs. This model allows predicting high frequency behaviour accurately.