Engenharia Elétrica Telemática
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Navegando Engenharia Elétrica Telemática por Autor "Bernd, Ícaro"
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Monografia Acesso aberto Sistema de microgeração fotovoltaica(2011) Bernd, Ícaro; Tomaz, Rafael AdelinoThis work consists on the study, design and simulation of a DC/AC converter for connecting a photovoltaic array to main grid. It is accomplished by a maximum power point tracker system and a single-phase voltage inverter, operating with three-level SPWM modulation. In the proposed system, two variables are controlled: the output inductor current, in order to obtain low total harmonic distortion and consequently high power factor, and the DC input bus voltage. For achieving the proposed aims, the study begins by a brief introduction about the photovoltaic history and by an analysis concerning the physical and mathematical concepts necessary for understanding the system operation. Furthermore, the system power stages and a detailed analysis of the two employed control loops are also presented. Finally, simulation results are used for validating the theory.