Abstract
In this paper, an adaptive nonlinear controller for transient stabilization and voltage regulation of wind power systems based Double Fed Induction Generator (DFIG) in multimachine environment is described using a classical third order dynamical model of the DFIG. Estimation of non measurable time derivative signals (quadrature stator current component of the DFIG, mechanical input power, unknown transient open circuit time constant for direct axis) and an online computing technique for the operating points (e.g. power angle and its reference) are presented. The major advantage of the proposed control law is its robustness with respect to large disturbances, parameter variations and change of the operating point. Simulation results in the case of 4-machine power systems show the performance of the proposed control scheme and its heftiness properties.
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