Retificador zeta monofásico com desaclopamento de potência.

Abstract

ln this work, it is developed and analysed a modification of the convencional rectifier Zeta to implement power decoupling, looking for minimizing output filter capacitance and flexing the manipulation of output and input variables, in order to obtain high power factor and power quality. Futhermore, by reduction of capacitance value, it is possible substitute electrolitic capacitor for mica, film, polyester or ceramic capacitors, which are more realiable and longer lifespan, giving the rectifier greater power density and reliability. For this, the characteristics of the oscillating power of the single-phase rectifiers are analyzed, and a way of absorbing this oscillation by th inductor of the topology has been developed, being necessary to rearrange some components for the insertion of an extra switch, that turns possible this strategy. All steps ofthe operation ofthis modified rectifier are described in detail, followed by simulation and experiments in a prototype to compare with the behavior expected in the theoretical analysis.