Modeling and Control of Wind Turbines Including Aerodynamics

Wind has proven to be one of the most successful of all available sources of renewable energy offering relatively high capacity, with generation costs competitive with conventional energy sources. Therefore, the technologies for generation of electrical energy from renewable energy sources, especially wind energy, have evolved in recent years. Most of available wind farm models in literature neither include aerodynamic torque models nor model for mechanical parts. Therefore, this paper presents a model for a variable-pitch, constant-speed horizontal-axis wind turbines including aerodynamics and mechanical parts. Moreover, two techniques of control of the considered wind turbine are applied. Both techniques objected to keep wind turbine speed constant for wide range of wind speed variations. Both PID and neural network NARMA-L2 controllers are used to control rotor blade pitch angle of the wind turbine. Results show that both controllers are capable to keep wind turbine speed and output power for various types of disturbances by controlling rotor blade pitch angle.