Analysis and calculation of variable pitch load for horizontal axis wind turbine
1.Jiangsu Automation Research Institute, Lianyungang, Jiangsu 222006, China; 2.Department of Machinery and Electronics, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China; 3.Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
Abstract：To solve the problem that inaccurate value is obtained due to neglect of details in conventional variable pitch load calculation, a horizontal axis wind turbine is taken as the investigation subject. The nonlinear model of wind power system is established and the blade geometry parameter and the aerodynamic data are calculated by using Matlab／Simulink. Some parameter values corresponding to different wind speed, such as axial induced factor, circumferential induced factor, relative wind speed, inflow angle, attack angle and pitch angle are calculated. In the end, the value of the variable pitch load is obtained according to the above data. The calculated results provide the reliable and fundamental data for the design of the variable pitch control system of the wind turbine.
2010, Vol. 31 
