Conversor Boost Isolado de Alto Ganho de Tensão com Retificador Multiplicador de Tensão Cockcroft-Walton
DOI:
https://doi.org/10.18618/REP.2019.2.0058Keywords:
conversor boost isolado, conversor de alto ganho de tensão, retificadores multiplicadores de tensãoAbstract
Neste artigo é apresentada uma proposta conversor CC-CC isolado de alto ganho de tensão. O conversor proposto é resultado da combinação do conversor boost isolado com um retificador multiplicador de tensão Cockcroft-Walton. As principais características do conversor proposto em relação ao conversor boost isolado são: alto ganho de tensão; baixo esforço de tensão nos interruptores; baixo esforço de tensão nos diodos. A análise estática com as etapas de operação, formas de onda do conversor no modo de condução contínua, metodologia de projeto e estimativa de perdas são mostradas. Com o objetivo de verificar o desempenho do conversor proposto, um protótipo foi implementado considerando um painel fotovoltaico de 200 W como fonte de energia, alcançando uma eficiência de 95,48 %.
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