Optimal multivariable control of a wind turbine with variable speed

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The control system desing for a 310 KW horizontal axis wind energy conversion system with a synchronous generatior and DC link is investigated. Because the win turbine system had multiple inputs (pitch angle, field voltage and delay angle), and multiple out-puts (speed and power) and because the requirements conflict, the linear quadratic optiman control method for multivariable systems is used. Two optimal proportional-integral controllers are applied to a detailed non-linear dynamic model. With simulations it is shown that, even when a large gust occurs the speed and power fluctuations are very small. With an eigenvalue analysis is shown that the torsional oscillations in the shaft are well damped.
Original languageEnglish
Title of host publicationProc. European Wind Energy Conference
Place of PublicationItaly, Rome
Publication statusPublished - 1986


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