Modelagem e controle de um sistema híbrido de microgeração empregando o inversor de fonte dividida

Abstract

This master’s thesis deals with the development of modeling and a control strategy for a hybrid renewable energy microgeneration system hydro-PV employing a three-phase three-leg Split- Source Inverter (SSI). Integration of different generation sources can require a large different converter topologies. The SSI merges the inversion and Boost stages in one single power conversion system. In addition, the proposed control strategy ensures regulation for balanced ac voltages on the Point of Common Coupling (PCC), load disturbance rejection and harmonic compensation in self-excited induction generator (SEIG) based systems, in this case, as hydroelectric energy system, providing the required active and reactive power. Moreover, hybrid systems play an important role in stand-alone power generation, the integration of photovoltaic (PV) power source into the microgrid system provides flexibility and reliability, enabling the power flow management. The modeling of the system and the design of the resonant and proportional integral controllers are presented. Furthermore, simulation and experimental results are presented to demonstrate the performance of the proposed control strategy, which contemplates the requirements recommended by the IEEE Standard 519.