Rocha, RonilsonCoutinho, Gilmar AlvesFerreira, Alexandre JoséTorga, Flávio Allison2015-05-262015-05-262010ROCHA, R. et al. Multivariable H2 and H∞ control for a wind energy conversion system – a comparison. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. XXXII, p. 511-519, 2010. Disponível em: <http://www.scielo.br/scielo.php?pid=S1678-58782010000400013&script=sci_arttext>. Acesso em: 09 abr. 2015.1806-3691http://www.repositorio.ufop.br/handle/123456789/5511The Wind Energy Conversion System (WECS) is a nonlinear system, highly dependent on a stochastic variable characterized by sudden variations, and subjected to cyclical disturbances caused by operational phenomena. Thus, the quality of a WECS controller is measured by its capacity to deal with unmodeled dynamics, stochastic signals, and periodic, as well as non-periodic disturbances. Since the WECS' objectives can be easily specified in terms of maximum allowable gain in the disturbance-to-output transfer functions, H2 and H∞ methodologies can be good options for designing a WECS stabilizing controller, combining specifications such as: disturbance attenuation, asymptotic tracking, bandwidth limitation, robust stability, and trade-off between performance and control effort. Designs for WECS multivariable feedback controllers based on H2 and H∞ methodologies are presented in this paper. The performances of both controllers are computationally simulated, analyzed and compared in order to identify the advantages and drawbacks of each controller design.en-USWind energy conversion systemControl theoryArtigo publicado em periodicoO periódico Journal of the Brazilian Society of Mechanical Sciences and Engineering permite cópia e distribuição dos artigos para fins não comerciais. Permite o armazenamento da versão pré-print. Fonte: Diadorim <http://diadorim.ibict.br/handle/1/83>. Acesso em: 13 nov. 2014.http://dx.doi.org/10.1590/S1678-58782010000400013