A técnica de controle de um ciclo aplicada à correção do fator de potência com retificadores boost.

Abstract

The main goal of this work is to investigate One-Cycle Control (OCC) Technique for power factor correction by using boost rectifiers. Some advantages of OCC technique are simplicity, low cost and control stability. The study includes the following boost rectifiers: (1) unidirectional single-phase; (2) bi-directional single-phase; (3) bi-directional three-phase twolevel and (4) bi-directional three-phase three. Nine topologies are considered, and, in some of these more than one operation mode is analyzed. Besides presenting a basic review of each topology operation, twenty OCC strategies are considered, which contemplate those operation modes. Some of them have been conceived in this work, while some of other, already existent, received some improvements. Two single-phase interleaved rectifiers, derived from full-bridge and half-bridge rectifiers, are proposed. Also, a universal controller integrated circuit, which includes, at least, the six controllers for bi-directional single-phase rectifiers, is conceived. Simulation results are obtained for all topologies. Experimental results, with analogical and digital controllers, are presented for several topologies.