Diseño e implementación de una fuente variable regulada de voltaje DC de 60W con corrección activa del factor de potencia basada en convertidores tipo Buck Síncronos.

Abstract

This work compares the experimental performance of Buck topologies with active power factor correction (CFP) and selects a topology for the implementation of a single-phase regulated AC / DC voltage source without Rectifier Bridge based on synchronous Buck converters. The system has an LC filter at the input, which has inherent properties of CFP and achieves that the supply current has an almost sinusoidal form with a power factor of more than 0.89 throughout the working range, in addition to complying with the limits Of the input current harmonic content imposed by the international regulation standard IEC 61000-3-2 class D. Experimental results are given for the output specifications of: DC voltage from 5 to 30 V, maximum current of 2 A ] In a power range of 5 to 60 [W]. In addition the system has the ability to maintain a regulated output voltage against disturbances. Theoretical analysis and the design criteria are taken into account.