Rotational Speed Control of Wind Power Generation Systems with Variable-Speed and Variable-Pitch
A robust controller of wind turbine pitch angle is designed by using the quantitative feedback theory based on the analysis of wind power system model in this paper. The controller design methodology is to select the system parameters quantitatively at different wind speed disturbances in order to optimize the response time and the output stability. Theoretical analysis and simulation results demonstrate that the controller can control the speed stability of wind power system with strong robustness to uncertain disturbances of the system parameters when the wind speed fluctuates randomly.
J. K. Xia et al., "Rotational Speed Control of Wind Power Generation Systems with Variable-Speed and Variable-Pitch", Applied Mechanics and Materials, Vols. 130-134, pp. 3190-3194, 2012