Avaliação de topologias de inversores para aplicação em sistemas fotovoltaicos

Abstract

Due to the trend of advancing photovoltaic energy in the coming years, both on account of the economy and the environment, the choice of which inverter to use becomes relevant, due to its importance in this energy generation. Therefore, it is essential to study and compare different topologies to analyze which one best respects certain requirements and conditions that one wants to obtain. To work with PV it is important that the inverters are buck and boost, however many inverters are just buck needing transformers or being two-stage to perform the function boost as well, but these two solutions have disadvantages. Therefore, the present work presents the study of two more recent inverters, which still do not have much literature on them, in which they do not need a transformer and are considered almost one-stage, in addition to being buck-boost. In this context, the performance of these inverters is verified, working as buck and as boost and their characteristics. Therefore, the approach used in this work showed two efficient inverters to be used in photovoltaic generation. The two inverters can work in a wide voltage range, in addition to not needing transformers, reducing cost and increasing efficiency. In addition to showing in the topology a reduction in the number of switches, volume of capacitors and less voltage stress, being great alternatives to be used in the future of photovoltaics and that people have more knowledge about these two inverters: TSTS-ZSI and ABI.