Navegando por Assunto "Robust stability"
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Item Acesso aberto (Open Access) Projeto de um controlador amortecedor robusto aplicado a um sistema de potência sujeito a incertezas paramétricas(Universidade Federal do Pará, 2016-03-16) CUNHA, Leiliane Borges; BARRA JUNIOR, Walter; http://lattes.cnpq.br/0492699174212608This work presents the design of a Stabilizer for the damping of the electromechanical oscillations in electric power systems using robust control technical based on affine parametric uncertainties. These systems are represented by models that have uncertainties in yours parameters, relating to changes in operating conditions. The project methodology is structured to provide a stabilizer that provides the maximum damping to the system, specified by a polytope of characteristic polynomials. For this, it is used poles robust allocation techniques and Chebyshev's theorem, integrated into the solution of linear programming techniques, for the controller design. This technique allows incorporating restrictions on system performance, corresponding to the uncertainties present in the system, making the controller design more robust. Comparisons of the robust controller with a classic controller are made in order to evaluate the results and validate the advantages of the use of controllers designed by the technique proposal. The results and comparisons are performed in simulation environments using MATLAB / SIMULINK software, which allows to model and simulate all kinds of dynamic systems.