TRANSFORMADOR DE ESTADO SÓLIDO CA-CC MONOFÁSICO 5 NÍVEIS BASEADO NO INTERCALAMENTO DE BRAÇOS NPC
DOI:
https://doi.org/10.18618/REP.2019.4.0056Keywords:
Bidirecional, conversor CA-CC, Conversor NPC-3L, Dual Active Bridge, Isolação em Alta Frequência, Transformador de Estado SólidoAbstract
Este artigo propõe uma topologia de Transformador de Estado Sólido (TES) CA-CC monofásico cinco níveis com característica de isolação em alta frequência e controle do fluxo de potência bidirecional. A topologia é composta pelo lado primário, que consiste em dois braços de conversor três níveis com ponto neutro grampeado (NPC-3L) monofásico conectados em paralelo com intercalamento, e pelo lado secundário, no qual é composto por um full bridge (FB) monofásico. O diagrama de estados de chaveamento e a estratégia de modulação e controle são apresentados. A análise teórica do conversor é realizada, visando demonstrar o fluxo de potência através do modelo fundamental, de forma similar ao conversor dual active bridge (DAB) monofásico. Para validação do estudo teórico são apresentados resultados experimentais do conversor proposto, através de um protótipo de 800 W.
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