Estratégia de Modulação Híbrida para Conversores com Pernas em Paralelo
DOI:
https://doi.org/10.18618/REP.2011.1.056067Keywords:
Controle orientado pelo campo, DFIG, Geração Eólica, Sistemas de ordem reduzidaAbstract
Este artigo propõe um novo modelo para aerogeradores baseados em gerador de indução duplamente alimentado (DFIG). O modelo proposto simplifica o modelo de 5ª ordem, levando em consideração determinadas condições que serão discutidas ao longo deste trabalho. A partir destas considerações foram originadas expressões simples para o cálculo das correntes injetadas através do estator, em função das correntes do rotor e da tensão na rede. A dedução detalhada do modelo proposto é apresentada neste trabalho. A fim de demonstrar a sua confiabilidade, quando comparado com o modelo de ordem completa, estudos de casos realizados em um protótipo com potência de 7,5 kW são apresentados, explorando condições de transitórios na tensão da rede elétrica e velocidade do vento.
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