Conducted interference voltage of AC-DC converters

Abstract

In this article an analytical method for calculating the conducted interference voltages of the three basic ac-dc converters buck, boost and buck-boost with sinusoidal input current and unity power factor is presented. The analysis includes a simulation of the quasi-peak measurement according to CISPR (Comité International Spécial des Perturbations Radioélectriques). The influence of the different circuit parameters is investigated and the validity is confirmed by experimental results.