DC Voltage Control and Harmonic Current Suppression of Single-Phase PFC Converter

Abstract

This paper presents a dc voltage control scheme of a single-phase PFC converter which can realize both the harmonic suppression of the input current and the fast dynamic response of the dc voltage. Instead of the constant dc voltage reference, the controller calculates the fluctuating dc voltage reference having the frequency twice a source frequency. In the calculation of the dc voltage reference, the circuit parameters are used. Since the parameter errors may cause the error in the dc voltage reference, the parameter identification is also described. The effectiveness of the proposed control algorithm has been verified by experiments.