The main contribution of this paper is the combination of a
novel online training neural network-based algorithm for wind
speed estimation with block back-stepping scheme to regulate the
optimum equilibrium point of wind turbine system. The wind
speed is calculated with the optimal mechanical torque value, that
is approximated with a neural network identifi er. A real-time dy-namic nonlinear learning law (as opposed to off-line training pro-cedure) of the weight vector is proposed for the neural network ,
and uniform asymptotic stability of the error origin is proved using
Lyapunov arguments. The nonlinear learning law makes that, the
neural network can approximate very fast changing data. In this
form, off-line training with extensive input-data is not necessary.
Also, good accuracy in any operation condition is guaranteed and
continue learning is achieved. A Block-Backstepping controller is
derived in order to regulate the optimum equilibrium point. Uni-form asymptotic stability of the tracking error origin for the overall
system is proved using Lyapunov arguments, and the performance
of this controller is compared with an SPBC that was proposed for
the same system.
The main contribution of this paper is the combination of anovel online training neural network-based algorithm for windspeed estimation with block back-stepping scheme to regulate theoptimum equilibrium point of wind turbine system. The windspeed is calculated with the optimal mechanical torque value, thatis approximated with a neural network identifi er. A real-time dy-namic nonlinear learning law (as opposed to off-line training pro-cedure) of the weight vector is proposed for the neural network ,and uniform asymptotic stability of the error origin is proved usingLyapunov arguments. The nonlinear learning law makes that, theneural network can approximate very fast changing data. In thisform, off-line training with extensive input-data is not necessary.Also, good accuracy in any operation condition is guaranteed andcontinue learning is achieved. A Block-Backstepping controller isderived in order to regulate the optimum equilibrium point. Uni-form asymptotic stability of the tracking error origin for the overallsystem is proved using Lyapunov arguments, and the performanceof this controller is compared with an SPBC that was proposed forthe same system.
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