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Revista Facultad de Ingeniería Universidad de Antioquia

Print version ISSN 0120-6230


MEJIA-RUIZ, Gabriel Eduardo; MUNOZ-GALEANO, Nicolás  and  LOPEZ-LEZAMA, Jesús María. Modeling and development of a bridgeless PFC Boost rectifier. Antioquia [online]. 2017, n.82, pp.9-21. ISSN 0120-6230.

This paper proposes a model of the bridgeless PFC (Power Factor Correction) boost rectifier for control purposes based on an averaged small-signal analysis. From circuital laws, four operation modes are defined and explained, ensuring a relationship of physical variables in the converter. Based on the proposed model, two-loop cascade control structures composed of Proportional-Integral (PI) lineal controllers are proposed. Design consideration for dimensioning reactive elements is included, providing minimum values for their inductance and capacitance. Implementation of a laboratory prototype of 900 W and experimental results are presented to validate and reaffirm the proposed model. Experimental results demonstrate that the use of the bridgeless PFC boost converter model allows the Power Factor ( PF ) to be elevated up to 0.99, to reduce the THD i (Total Harmonic Distortion of the Current) to 3.9% and to control the DC voltage level on output. Compliance of standards of power quality EN 61000-3-2 (IEC 1000-3-2) are experimentally verified.

Keywords : Bridgeless power factor correction (PFC); single-phase rectifier bridgeless; mathematical model; PFC boost rectifier.

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