Projeto e desenvolvimento de um inversor trifásico bidirecional fonte de tensão com controle por transformada de Park

• Ano de defesa: 2019
• Autor(a) principal: Prado, Gustavo Martins
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; Brasil; Programa de Pós-graduação em Engenharia Elétrica
• Palavras-chave em Português: Inversor trifásico bidirecional fonte de tensão; bidirecionalidade do fluxo de potência; fontes renováveis de energia; transformada de Park; DQ0; DSP; Eletrônica de potência; Inversores elétricos; Bidirectional three-phase inverter voltage source; bidirectionality; renewable energy sources; Park transform; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::ELETRONICA INDUSTRIAL, SISTEMAS E CONTROLES ELETRONICOS
• Link de acesso: https://repositorio.ufu.br/handle/123456789/26170; http://dx.doi.org/10.14393/ufu.di.2019.40

This work presents the analysis and experimental development of a topological structure of Bidirectional Three-Phase Voltage Source Inverter with high a power factor (PF) for application in micro grids with DC bus, analyzing its performance in the injection of active power in the network and maintaining the stable DC bus. The system contains an LCL filter to decrease the harmonic components. In order to analyze the behavior of the topology, a computational model was implemented in the PSIM® platform through which it was possible to verify the efficiency of the control strategy using Park transform (DQ0). For voltage and current synchronization, two PLL models were tested: SRF-PLL and single-phase PLL with fixed reference. Finally, in order to corroborate with the proposed theory, a prototype was developed for nominal power of 2kW with digital control strategy implemented from a DSP (Digital Signal Processor). Individual tests were carried out in each of the operation stages, besides tests presenting the transition between the two modes in order to prove their bidirectional structure characteristics.