Abstract

CORAL-ENRIQUEZ, Horacio; CORTES-ROMERO, John  and  RAMOS, Germán A. Energy capture maximization on variable-speed wind turbines through generalized proportional integral control. Ing. Desarro. [online]. 2014, vol.32, n.1, pp.41-63. ISSN 0122-3461.

This paper proposes an alternative linear control technique to maximize the energy capture in a horizontal-axis wind turbine. The proposed strategy is based on Generalized Proportional Integral (GPI) controllers supported by the active disturbance rejection approach, which allows asymptotic tracking of a rotor speed reference trajectory without exact wind turbine model knowledge. The proposed methodology controls the tip-speed ratio, via the rotor angular speed, to an optimum point at which power ci! coefficient is maximum. Several simulations are performed on a 4.8MW wind turbine benchmark model in order to validate the proposed control strategy and to compare it to a classical controller. The simulation results show that the proposed control strategies are effective in terms of power capture and robustness.

Keywords : active disturbance rejection; generalized proportional integral control; maximum energy capture; wind turbines.

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