Conversores estáticos com retificador semicontrolado.

Abstract

In this work, converters are studied using semi-controlled rectifiers, i.e., are used legs with controlled switches (eg, IGBTs) and legs with non-controlled switches (eg, diodes) in order to reduce converter cost. Were studied configurations single-phase AC-DC-AC with threelegs using legs with two or three levels, converters single-phase with three-leg for threewire system, converters three-phase based on three single-phase three-leg, converters used in wind energy conversion systems using permanent magnet machine, and configurations singlephase to three-phase. For each topology, there are: (i) system model; (ii) PWM strategy; (iii) control strategy; (iv) Performance analysis of configurations according to the criteria of harmonic distortion and conduction losses and switching in semiconductors. Also are shown simulation and experimental results.