A new method for EMI study in boost derived PFC rectifiers

PFC rectifiers produce EMI. Because of standard requirements, high frequency disturbances must be studied in order to be reduced. A new forecast method is presented. It is based on a frequency domain analysis. It saves time and computer memory compared to classical time domain analysis methods. A description and valid conditions are given. The method is applied to the single switch boost rectifier in continuous mode operation using a PWM control strategy. It is compared to circuit oriented simulation and experimental results which validate its interest.