Self-optimizing Pitch Control for Large Scale Wind Turbine Based on ADRC

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Xia, Anjun^1 ; Hu, Guoqing^1 ; Li, Zheng^1 ; Huang, Dongxiao^1 ; Wang, Fengxiang^1

Quanzhou Institute of Equipment Manufacturing, Haixi Institutes, Chinese Academy of Sciences, Quanzhou Fujian, China^1

关键词: Active disturbance rejection controls;    ADRC;    Amplification coefficient;    Control performance;    Large scale wind turbines;    Pitch control;    Self-optimizing control;    Tracking differentiators;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012155/pdf
DOI  :  10.1088/1757-899X/301/1/012155

来源: IOP

【 摘 要 】

Since wind turbine is a complex nonlinear and strong coupling system, traditional PI control method can hardly achieve good control performance. A self-optimizing pitch control method based on the active-disturbance-rejection control theory is proposed in this paper. A linear model of the wind turbine is derived by linearizing the aerodynamic torque equation and the dynamic response of wind turbine is transformed into a first-order linear system. An expert system is designed to optimize the amplification coefficient according to the pitch rate and the speed deviation. The purpose of the proposed control method is to regulate the amplification coefficient automatically and keep the variations of pitch rate and rotor speed in proper ranges. Simulation results show that the proposed pitch control method has the ability to modify the amplification coefficient effectively, when it is not suitable, and keep the variations of pitch rate and rotor speed in proper ranges.