Estimation method of disturbances generated by a voltage diode rectifier in discontinuous mode in association with a LISN

Today, converters are more and more efficient. However, this increase in technology remains limited by the production cost. In spite off the rapid rise in the development of complex PFC systems, simple solutions are usually used. The voltage diode rectifier remains the easiest. The harmonic generation through an EMI filter or passive elements is one of its main problems. In order to understand these phenomena, a frequency method is presented. The conducted noise spectrum of the association between a single phase voltage diode rectifier and a LISN is computed in the frequency domain. A sensitive study of the LISN and the diode rectifier parameters is carry out to point out undesired frequency resonance effects. The technique proposed in this paper is appropriate for applications where calculation speed is preferred rather than high precision.