Analytical Modeling of 9-150 kHz EMI in Single-Phase PFC Converter

This paper proposes an analytical approach for modeling low frequency Differential Model (DM) Electromagnetic Interference (EMI) noise of single-phase Power Factor Correction (PFC) converters within 9–150 kHz frequency range. In order to develop analytical model of the DM EMI noise, the switching function model of the converter is calculated utilizing double Fourier analysis including its input closed-loop impedance model. Notably, the analytical modeling includes Line Impedance Stabilization Network (LISN) circuit and EMI receiver. A 1 kW single-phase boost PFC converter prototype is used for validation of the proposed EMI modeling technique.

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