Revista Eletrônica de Potência (Brazilian Journal of Power Electronics)

Palavras Chaves: controle de potência, Controle Preditivo, Controle Vetorial de Máquinas, DFIG, energia eólica, Gerador de Indução Duplamente Alimentado

Resumo

Durante os últimos anos, tem-se apresentado diversas topologias de controladores preditivos aplicados ao Doubly Fed Induction Generators. Devido a importância dessa abordagem, neste artigo será analisado a sensibilidade dos horizontes de controle e de predição em um controlador preditivo baseado em modelo, do inglês Model Based Predictive Control, que utiliza um modelo de predição em espaço de estados. O presente estudo inclui a análise da resposta ao degrau, propagação do ruído, relativos ao chaveamento do conversor back to back e ao ruído do eixo. Além disso, serão analisados o desempenho do controlador quando o gerador opera em diferentes velocidades mecânicas, e o custo computacional do algoritmo do controlador. Finalmente, serão apresentados resultados experimentais para validar as análises feitas.

Title: Impact of receding horizon length under MBPC applied to DFIG based wind turbine

Keywords: DFIG, Doubly-Fed Induction Generator, Machine vector control, power control, Predictive Control, wind power generation

Abstract

During the last years, there has been presented many predictive controllers applied to Doubly Fed Induction Generators. Due to the importance of this approach, this paper is going to analyze the sensitivity of prediction and control horizon to a Model Based Predictive Control using a space-state prediction model. The current study includes a step response analysis, noise propagation, related to back to back power converter switching and mechanical shaft noise. Furthermore, the performance under different mechanical speed and computational cost of MBPC algorithm are going to be analyzed. Finally, experimental results were used to endorse the proposed analysis.

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