Abstract
Considering the internal and external disturbances in wind energy conversion systems, a predictive active disturbance rejection control (PADRC) strategy for a direct-driven permanent magnet synchronous generator (PMSG)-based wind energy conversion system, is proposed to maximize the wind power extraction in this paper. First, the proposed PADRC method can successfully deal with the effects of the uncertainties in the internal dynamics, modeling error, external forces and the variety of wind speeds, since it inherits the merits of active disturbance rejection control (ADRC). Second, the introduction of Smith Predictor can overcome the time delay in wind turbine system to guarantee the maximum power tracking performance for different wind speeds. Finally, simulation studies are conducted to evaluate power tracking performances of the proposed control strategy. It is shown that the proposed PADRC strategy exhibits significant improvements in both maximum power tracking performance and anti-disturbance ability compared with the traditional ADRC approach.
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