Nova Estratégia De Controle De Alto Desempenho Para Operação Do Gida Durante Distúrbios Assimétricos Na Rede Elétrica
DOI:
https://doi.org/10.18618/REP.2009.4.305315Keywords:
afundamento de tensão, faltas assimétricas, GIDA, Modos deslizantesAbstract
Esse artigo propõe um controlador não linear de alto desempenho baseado em modos deslizantes para o controle do Gerador de Indução Duplamente Alimentado (GIDA) em eixos estacionários. O controlador proposto melhora o comportamento transitório do GIDA principalmente durante afundamentos de tensão desequilibrados no ponto de conexão (PC). O projeto do controlador é desenvolvido de forma a garantir a estabilidade do GIDA conectado à rede elétrica mesmo considerando incertezas associadas ao modelo nominal. Ainda, é proposta uma metodologia para o cálculo das referências de corrente de forma a dar suporte de reativos durante faltas próximas ao PC. Outras características do controlador proposto, além da robustez, são a sua simplicidade de implementação e a sua excelente resposta transitória. O comportamento dinâmico do sistema e o desempenho da estratégia de controle são verificadas através de simulações bem como experimentalmente.
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