Modelling of conducted EMI generated by a three-phase PWM rectifier

One major problem when simulating electric converter is to obtain realistic estimation. To overcome this problem, two of measuring techniques were exploited: the first one is to use a direct implementation of measured data; the second one is to use the equivalent RLC circuit. In this paper we use the second method, as it is valid in both the time and frequency domain. Hereafter, the conducted electromagnetic disturbances were modeled and the simulations were carried out by spice software. The converter used for this study is a three-phase rectifier. The passive and parasitic components of the converter were modeled by RLC circuits. Thus, the proposed circuit model has made it possible to obtain a quick realistic estimation of conducted EMI noise.