Estudo dos limites de operação de conversores cc-cc aplicados à sistemas fotovoltaicos com o uso de dados reais de radiação solar

Abstract

This completion of course work presents an analysis of the operating limits of three basic non-isolated and low cost DC-DC converters, from the use of real solar radiation data from the central region of Rio Grande do Sul, obtained through the SONDA project, from INPE.The objective is to make an analysis of the limitations of the converters when subjected to current radiation parameters so that in future, be able to make a more complex study on the possibility of implementing a simple obtaining photovoltaic solar energy and low cost system.For the study to obtain successful, if used a circuit crawler maximum power point, based on the method of perturbation and observation (P&O) for the system to always keep the maximum power point at which the photovoltaic panel can generate. The choice of this method is justified by its simplicity of implementation and for its reliability.The results were obtained from the simulations with the PSIM software, Powersim and are exposed in the course of work.