A conducted EMI model for an industrial power supply full bridge

The full bridge inverter, which is very used in the power electronic structures, generates an electromagnetic pollution. We have worked on the prediction of the EMI on an industrial full bridge 600 W. We have simulated the global spectrum of pollution on the band pass 150 kHz-30 MHz in order to understand its HF comportment. The purpose of this paper is to have a better comprehension of electromagnetic phenomena in order to reduce the pollution to the source. We will describe the simulation tool, which permits to predict the global spectrum in conducted EMI. The simulation results are compared to the practical results. The influences such as parasitic components, propagation paths and switching time will be also treated.