Desenvolvimento de um conversor monofásico-trifásico com compensação ativa de potência série-paralela

Abstract

This work presents a study, design and analysis of a single-phase to three-phase converter with series-parallel active power line compensation, which in this work is called UPQC-Mono-Tri. The proposed topology is indicated for application in rural areas, where only single-phase electric power distribution system is available. The UPQC is composed of two PWM converters, where the first operates as series active power filter (SAPF), while the second is composed of a three-phase inverter, which is implemented by means of three half-bridge inverters. One of the half-bridge inverters is connected to the load and also operates as parallel active power filter (PAPF). The dual compensation strategy is adopted for the proposed UPQC topology, in which both series and parallel controllers handle only sinusoidal references. The SAPF operates as sinusoidal current source synchronized with the utility grid voltage, while the PAPF operates as sinusoidal voltage source providing sinusoidal, balanced and regulated voltages to single or three-phase loads. Simulations are performed in order to evaluate the proposed topology performance, as well as an experimental prototype is built to confirm the theoretical development, and validate the proposed work.