Papers by Author: Bin Liang

Abstract: This paper researches differential mode (DM) conducted electromagnetic interference (EMI) in rectifier. The DM interference source generated by power electronic switches is given. Based on experimental and theoretical analysis, the conducted EMI of a three-phase rectifier is studied systematically. The study shows that it changes with resistance loads in low frequency ranges, while in high frequency bandwidth, the effect of change of the resistance load on the DM EMI is not obvious. The validity of the models is confirmed by the measurements.

Abstract: A simplified method for the calculation of Common-mode (CM) electromagnetic interference (EMI) caused by Three-phase PWM rectifier is presented. EMI analysis in time domain presents particular problems due to complex geometry and the wide range of time constants involved. This makes the simulation of EMI a complex matter. The method presented here is based on a “Matrix representation” process and is specially designed to simplify the mentioned problems. In this paper, quick and robust simulations were preferred rather than very accurate results. Once the disturbances sources are calculated parameters of the propagation path can be changed giving a new prediction immediately. To evaluate the performances of this analytical approach the frequency-domain model is compared with Saber simulations.