Desenvolvimento de um retificador trifásico intercalado de entrada dupla para aplicação em aerogeradores de pequeno porte

• Ano de defesa: 2025
• Autor(a) principal: Todys, Guilherme Matheus
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Brasil; Programa de Pós-Graduação em Sistemas de Energia; UTFPR
• Palavras-chave em Português: Retificadores de corrente elétrica; Turbinas eólicas; Eletrônica de potência; Simulação (Computadores); Electric current rectifiers; Wind turbines; Power electronics; Computer simulation; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::SISTEMAS ELETRICOS DE POTENCIA; Engenharia Elétrica
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/37432

This master’s thesis presents a high-gain three-phase interleaved rectifier operating in discontinuous conduction mode (DCM) with a dual-input diode bridge configuration for application in small wind generators. The two input diode bridges enable current sharing, significantly reducing the converter’s current stresses compared to previous topologies. A theoretical analysis of the converter was conducted, followed by a simulation study and experimental tests using a prototype board. The simulations compared the proposed three-phase rectifier with three other three-phase topologies, demonstrating its operation with significantly reduced current stresses and smaller input inductors. The experiments evaluated the converter’s performance when operating with a three-phase power supply and a wind turbine associated with a maximum power point tracking (MPPT) method using the Perturb and Observe (P&O) technique. For an output power of 1 kW, a 400 V DC bus, and an input RMS line voltage of 114 V, the converter’s efficiency exceeded 95%. Additionally, the experimental results confirmed that the rectifier operates with sinusoidal input currents, low current ripple, and a high power factor in all tested scenarios.