Estratégia híbrida para rastreamento de máxima potência em sistemas fotovoltaicos sombreados

• Ano de defesa: 2019
• Autor(a) principal: Leopoldino, André Luiz Marques
• Orientador(a): Monteiro, Luís Fernando Corrêa
• Banca de defesa: Tcheou, Michel Pompeu , Velloso, Maria Luiza Fernandes , Sotelo, Guilherme Gonçalves
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade do Estado do Rio de Janeiro
• Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia Eletrônica
• Departamento: Centro de Tecnologia e Ciências::Faculdade de Engenharia
• País: BR
• Palavras-chave em Português: Engenharia eletrônica; Sistemas de energia fotovoltaica; Geração de energia fotovoltaica; Inteligência coletiva; Eletrônica de potência; Sombreamento parcial; Otimização por enxame de partículas; Rastreamento do ponto de máxima potência global; GMPPT
• Palavras-chave em Inglês: Electronic engineering; Photovoltaic energy systems; Generation of photovoltaic energy; Collective intelligence; Power electronics; Partial shading; Maximum power point tracking; Particle swarm optimization; Solar power generation; Iterative algo-rithms; Global maximum power point tracking; GMPPT
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS
• Link de acesso: http://www.bdtd.uerj.br/handle/1/11761

Growing concern about environmental issues caused by the use of environmentally harmful fossil fuels has stimulated research into the spread of so-called green energy sources. Among them, the photovoltaic energy, also known as photovoltaic system (PV system), stands out for the possibility of being used both on a large scale and on a small scale, as for example, PV-household applications. An important feature of the PV system is the possibility of being dynamically conditioned to produce its maximum energy. For this purpose, these sources are used together with power converters controlled by MPPT (Maximum Power Point Tracking) algorithms. Currently, one of the bottlenecks in the use of photovoltaic energy lies in the effect of partial-shading effect due to different causes as, for example, by leaves or objects falling on the panels. As a consequence, the power x voltage characteristic curve may present local maximum points and a global maximum point. In this context, this work proposes a hybrid solution using Particle Swarm Optimization (PSO) and Incremental Conductance algorithms in a complementary way, so that the resulting algorithm is able to identify the global maximum point in any situation, provided there is a prior knowledge of the domain to be traced. Further details of this method, based on particle swarm optimization, are presented throughout the paper. Simulation results involving different test cases are presented with the objective of observing the performance of the proposed algorithm.