Losses Prediction in the Frequency Domain for Voltage Source Inverters

This paper introduces a method to estimate the losses produced by high frequency DC/AC and AC/DC converters. This method relies on the frequency dependence of losses combined with a frequency domain description of current waveforms into component. The approach is based on the characterization of series components, available from manufacturers. The modelling technique in the frequency domain is described then it is applied, based on mathematical fitting, without physical or circuit description relationships. Finally, the validation of the modelling method is carried out on a low voltage VSI.