Metodologia para derivação de conversores cc-cc elevadores de alto ganho baseados em conexões diferenciais
DOI:
https://doi.org/10.18618/REP.2024.1.0003Keywords:
Células de Ganho, Conexão Diferencial, Conversores cc-cc Elevadores de Alto Ganho, Processamento Parcial de PotênciaAbstract
Este artigo apresenta uma metodologia para síntese de topologias de alto ganho a partir da conexão diferencial entre conversores cc-cc básicos. Tais conversores básicos podem ser iguais ou diferentes, mas devem compartilhar referência comum entre entrada e saída e tensões de saída de mesma polaridade. Além da metodologia e da análise de alguns dos conversores sintetizados em modo de condução contínua, o artigo discute sobre processamento parcial de potência, redução de componentes, adição de células de ganho, modelagem e estratégias de controle. A metodologia proposta é verificada por meio de dez protótipos derivados da conexão diferencial entre conversores básicos, considerando tensão de entrada de 20 V, razão cíclica de 0,75 e potência nominal de 100 W. Três novos conversores cc-cc de ultra alto ganho também são sintetizados a partir da inserção de células de ganho nos conversores diferenciais propostos, sendo dois deles avaliados experimentalmente, apresentado rendimentos máximos próximo de 97%.
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Copyright (c) 2024 Jéssika Melo de Andrade, Marcos Antonio Salvador, Roberto Francisco Coelho, Telles Brunelli Lazzarin
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