Projeto e implementação de método para conexão paralela de UPSs com compartilhamento de potência

• Ano de defesa: 2012
• Autor(a) principal: Annunziato, Rafael Christiano
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial
• Palavras-chave em Português: Programação paralela (Computação); Sistemas de controle digital; Processamento de sinais; Potência reativa (Engenharia elétrica); Fonte de energia ininterrupta; Simulação (Computadores); Parallel programming (Computer science); Digital control systems; Signal processing; Reactive power (Electrical engineering); Uninterruptible power supply; Computer simulation
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/312

This work presents the design and experimental implementation of a complete paralleling method to be used for parallel single-phase UPSs connection. There is a algorithm that performs a phase/frequency droop, and a new method to work with or without data communication among the inverters. When communication is working, a new algorithm is used, inserting a variable virtual resistance in the output, along with active power sharing, obtaining a low output voltage THD (Total Harmonic Distortion) value and good power sharing. Without communication a constant virtual resistance is inserted, increasing the output THD with non-linear load, but still allowing a good active power sharing. The advantage is to obtain a good performance operation with communication, but, in case of communication failure, the system still works providing more reliability. The implementation have a electronic load emulation algorithm, with purpose to execute factory tests, based in the same parallelism algorithm, just changing some variables.