Análise de conversor multipulso utilizando transformador com culatra intermediária

• Ano de defesa: 2014
• Autor(a) principal: Pelicer Junior, João Carlos [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Sistemas de energia eletrica; Conversores de corrente eletrica; Transformadores eletricos; Fator de potencia; Electric power systems
• Link de acesso: http://hdl.handle.net/11449/123195; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/23-04-2015/000825474.pdf

Over the years there was a diffusion of nonlinear loads in power system, and the power factor, which previously suffered only influence by the displacement factor, now is decreased by the THD (Total Harmonic Distortion) of the system. Harmonic components have significant impact on the power electrical quality of the system as a whole, resulting among other problems, such as the addition of losses in the electric system, difficulties in the measurement and reduction of the useful life of capacitors. In order to reduce these impacts in the system, there are several applicable solutions, one among them, the use of 12-pulse converter. This paper aims to analyze the experimental pulse converter 12 which makes use of a transformer with intermediary yoke. A modeling of the flux in the core was made to know how its behavior in the intermediary yoke. It will be analyzed the impacts of interphase transformer removal. Comparison will be made on an experimental operation of both cases (with and without IPT) verifying the advantages of operating at each of these conditions. The experimental results are compared with standard IEC 61000-3-2