Estudo do conversor D : análises qualitativa e quantitativa, critérios de dimensionamento e modelagem em espaço de estados

• Ano de defesa: 2018
• Autor(a) principal: Dutra, Sílvio Cesar Antunes
• Orientador(a): Pimentel, Guilherme Araujo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul
• Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia Elétrica
• Departamento: Escola Politécnica
• País: Brasil
• Palavras-chave em Português: Análises Qualitativa e Quantitativa; Baixa Ondulação na Corrente de Entrada; Metodologia de Dimensionamento; Espaço de Estados; States Space
• Palavras-chave em Inglês: Qualitative and Quantitative Analysis; Low Input Current Ripple; Design Methodology
• Área do conhecimento CNPq: ENGENHARIAS
• Link de acesso: http://tede2.pucrs.br/tede2/handle/tede/8339

Power converters are widely used in the context of power electronics. In the same way that transformers have a fundamental role in applications involving AC circuits, power converters modify voltage magnitudes in DC circuits. These devices can either present an output voltage higher than the input voltage, acting as a Boost converter, or lower, acting, in this case, as a Buck converter. The input and output signals can also present either a voltage source or a current source behavior, depending on the topology. This work presents a systematic study of the D converter operating in the continuous conduction mode, in permanent regime, including the qualitative and quantitative analyzes, resulting in a methodology of dimensioning of the converter, as well as its modeling in space of states, which makes feasible studies of control strategies for it. Although this is not a new topology, this converter has recently been reintroduced due to its ability to increase efficiency in the energy conversion process, especially in photovoltaic systems. However, this research is fully justified given the lack of similar work for the D converter topology. This study was validated from tests performed in the PSIM simulation software, in addition to MATLAB / SIMULINK. A laboratory prototype was specially constructed for validation purposes in a rapid prototyping platform, as well as the consequent implementation in a PCI, for use in future works.