A Feedforward Voltage Control Strategy for Reducing the Output Voltage Double Line Frequency Ripple in Single-Phase AC-DC Converters
Journal
IEEE Journal of Emerging and Selected Topics in Power Electronics
Date Issued
2021
Author(s)
Abstract
This paper proposes a feedforward voltage control strategy (FVCS), aimed to reduce the output voltage double line frequency ripple as well as the output capacitance of the single-phase AC-DC power factor correction (PFC) converters. It is known that a large capacitance is required to reduce the voltage ripple but it results in low power density. With the proposed FVCS achieving low output voltage ripple, the output capacitance can be reduced, so the size and cost of the converter can also be reduced. Moreover, the proposed FVCS only needs one voltage sensor which can get rid of the necessary current sensor in the conventional harmonic input current injection technique. In this paper, the detailed mathematical analyses, harmonic current limitations, and key parameters, k and NΔECo, of this proposed control strategy are derived. Also, the design procedures for a flyback converter are provided. Finally, computer simulations and experimental results of a 100 W prototype circuit are presented to verify the effectiveness and performance of the proposed FVCS. IEEE
Subjects
Electric inverters; Rectifying circuits; Voltage control; Control strategies; Double line-frequency ripples; Flyback converters; Harmonic currents; Low output voltage ripples; Mathematical analysis; Prototype circuits; Voltage control strategies; Capacitance
SDGs
Type
journal article