Filtro ativo paralelo aplicado à compensação de harmônicos e desbalanços de corrente em sistema isolado de microgeração de energia elétrica

Abstract

This course completion work aims to present a system capable of compensating for unbalanced and harmonic currents from unbalanced and non-linear loads in an isolated power generation system. The isolated generation system under study is composed of the parallel operation of the self-excited induction generator and the synchronous generator. These currents impair the useful life of the generators and compromise the quality of the energy produced. To solve this problem, the work proposes the use of a parallel active filter, responsible for compensating unwanted components, resulting in significant improvements in performance and efficiency of the isolated electrical power generation system. The work addresses the detailed operation of the system, explaining how to obtain the components to be compensated, as well as presenting the modeling of the system and the design of the controllers. To validate the proposed system, simulations are performed using the Simulink software in a test system composed of a synchronous generator. The simulations evaluate the performance of the compensation system against the connection of unbalanced and nonlinear loads. The results are analyzed according to energy quality standards, focusing on the unbalance factor and the harmonic content of voltages and currents.