Modulação por Deslocamento de Fase Modificada Aplicada a um Conversor de Três Portas em Ponte Completa
DOI:
https://doi.org/10.18618/REP.2021.1.0019Keywords:
Conversor de Três Portas, Inversor Ponte Completa Unfolding, Modulação por Deslocamento de Fase ModificadaAbstract
Este trabalho apresenta uma técnica de Modulação por Deslocamento de Fase Modificada (MDFM) aplicada a um conversor de três portas (CTP). A topologia do CTP é classificada como parcialmente isolada e composta por um inversor em ponte completa unfolding integrado com um conversor CC/CC elevador. A Modulação por Deslocamento de Fase (MDF) controla a corrente na saída CA, enquanto o controle do conversor CC-CC depende da MDF e de uma variável de controle denominada Dfv. A MDFM é caracterizada por ter a saída CA independente de Dfv. Para validar o funcionamento da topologia da ponte completa unfolding com a MDFM foram realizadas simulações e, posteriormente, testes experimentais. Os experimentos foram realizados em um protótipo de 200 W e a técnica de modulação proposta foi capaz de controlar o fluxo de energia entre as três portas do conversor.
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