Frequency domain prediction of conducted EMI in power converters with front-end three-phase diode-bridge

This paper investigates the frequency domain prediction of conducted EMI within power converters supplied by front-end three-phase diode-bridge. Noise source, noise propagation path and noise receiver are identified. Difficulty due to the presence of diode-bridge is analyzed and a method is proposed and verified by measurement to take the variation of propagation path into account while still enable the simulation to be carried out in frequency domain.