Standards require power "quality" and request "c1ean" power electronic converters. Power factor correction (PFC) rectifiers satisfy these constraints. However, these converters move the problem in upper frequency ranges creating electromagnetic interference (EMI) also subject to standard constraints. Therefore, it is now required to study their high frequency hehavior. This work presents a new method to study conducted EMl of PFC rectifiers. It allows to remove the double time sc ale problem which is characteristic of this type of converters. Based on two conëepts (linearlzation and frequency modeling), it can he applied to any kind of boost derived rectifier operating in continuous current mode (CCM). A fIfst part presents main topologies and operation principles of boost derived PFC rectifiers. One of them, "the interleaved boost rectifier" is studied in more details. Then, conducted electromagnetic compaqbility concepts are presented and the new frequency method is introduced. Several remarks emphasize the specificity of EMI induced by rectifier. In the third chapter, the new frequency method is applied to the single-switch single-phase boost rectifier operating in CCM. Frequency model is validated (comparisons with theoretical and practical resuIts) and then applied to conducted EMI characterization. A filtering study based on this model is performed at the end of this part. The final chapter deals with the EMI study of single-phase full bridge rectifier. Once the frequency model derived and validated, a study about its behavior is proposed. It is shown that conducted EMI levels are dependent on topology and operation principle of the converter.
