Output power leveling of wind turbine generator by pitch angle control using adaptive control method

Effective utilization of renewable energies such as wind energy is expected instead of fossil fuels. Wind energy is not constant and windmill output is proportional to the cube of wind speed, which cause the generated power of wind turbine generators (WTGs) to fluctuate. In order to reduce fluctuating components, there is a method to control pitch angle of the blades of the windmill. In this paper, output power leveling of wind turbine generator by pitch angle control using an adaptive control is proposed. A self-tuning regulator (STR) is used as the adaptive control. The control input is determined by the minimum variance control (MVC). It is possible to compensate the influence of parameter variations by using the proposed controller. The simulation results with the actual model for the wind power system show effectiveness of the proposed controller.