Comportamento do condicionador ativo de potência em sistemas desequilibrados e distorcidos: um sistema combinado entre filtros ativos série e filtros passivos paralelos

Abstract

This work comes with the propose of investigating a combined system composed by two active series filters and a shunt passive filter operating under distorted and unbalanced load conditions which are applied to a three phase - four wire system. The control and the power systems main aspects are investigated to the combined system elaboration based on Synchronous Reference Frame controllers. Added to this, the combined system performance is investigated and presented. The control issues have been widely investigated once it exhibits a good dynamic performance, simple implementation work and a satisfied cost- effectiveness relationship. The literature had already proposed a lot of applications related to the combined system based on SRF controllers. However the existent applications are limited to balanced load conditions and three phase - three wire power systems. The aim of this work is to investigate the performance of the combined system under unbalanced conditions for a three phase – four wire power system and essentially to propose a solution that viability the combined system under unbalanced condition application when it is performed in the synchronous reference frame to the heaviest load conditions and then follows the actual standards recommendations.