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Información tecnológica

On-line version ISSN 0718-0764

Abstract

MEJIA-RUIZ, Gabriel E.; MUNOZ-GALEANO, Nicolás  and  ORTIZ-CASTRILLON, José R.. Adaptive Hysteresis Band for a Bridgeless Boost Converter with Power Factor Correction and Sliding Mode Control. Inf. tecnol. [online]. 2019, vol.30, n.4, pp.283-292. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642019000400283.

It is proposed to apply an adaptive hysteresis band that allows to reduce the total harmonic distortion, the ripple and the deformation in the zero crossing of the input current of a bridgeless boost AC-DC converter with power factor correction (PFC). A procedure for calculating the hysteresis band based on the dynamic states of the converter is presented, in such a way that it is possible to keep fixed the switching frequency. The band is applicable to the sliding mode control that allows to improve the dynamic performance of the power converter in the presence of bounded perturbations and significant changes in operating region. The results of the simulation of a 1 kW converter are presented. It is shown that it is possible to raise power factor up to 0.996, to decrease the deformation of the zero crossing and to reduce the total harmonic distortion in the input current down to 2.8%, keeping it below the maximum permissible limits of the standard EN / IEC 61000-3-2 (1000-3-2).

Keywords : adaptive hysteresis band; power factor corrector; controlled rectifier; sliding mode; constant frequency.

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