Fuzzy Inference Based Approach for Pitch Angle Control of Variable Speed Variable Pitch Wind Turbine

This paper firstly analysed the theory of the Wind Turbine (WT) pitch control algorithms to maximize energy yield, and then based on the analysis, 3 MW wind turbine model with a servo system and Doubly Fed Induction Generator (DFIG) is developed. Servo control system which has some typical characteristics of nonlinearity and to ensure better performance of variable speed variable pitch WT, pitch ß angle is controlled applying the developed algorithms. Developed Algorithms reveal dynamic performance of the blade pitch angle, rotor speed and rated power characteristics. Within the wind turbine standard operating regimes, controllers have shown promising results. Proposed Fuzzy technique validates superior performance. Finally, MATLAB/SIMULINK tool box establishes the corresponding model to simulation test in order to verify the effectiveness and correctness of the analysed algorithms. Simulation result demonstrates that the developed pitch servo control system has good dynamic, steady state performance and robustness.