Wind turbine generation (WTG) system can increase itsrnreal power generation through variable-speed control andrnyaw control. The variable-speed control means that thernrotor velocity may be controlled according to the variationrnof the wind speed for achieving the maximum powerrnpoint tracking. The yaw control indicates that thernhorizontal axis wind turbine needs extra devices tornorientate the rotors against the wind direction. On thernother hand, simultaneous perturbation stochasticrnapproximation (SPSA) algorithm is a highly efficientrngradient approximation that relies on two measurementsrnof the objective function. This paper addresses arnsensorless yaw control by realization of SPSA for on-linernparameter tuning for the PID controller. A DC motor isrnused as a plant for illustrating the position controlrnperformance. The SPSA is realized in arnfield-programmable gate arrays (FPGA) developmentrnboard. Experimental results show that realization ofrnSPSA for WTG is very efficient.
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