Dynamics Simulation Of Wind Turbine System

Wind turbine is a main installment, of which the research and development are the cores of wind electricity technology. Wind turbine is composed of the wind wheel, the transmission system, the generator, the supporting set, the safety device and the control system. Among them, the blade of the horizontal axis wind turbine is regarded as the elastomer, which has brought the oscillation unstably as a result of the aerodynamic force, the elastic force and the force of inertia couple, which is cause of the failure of the structure. Therefore, the aero-elasticity stability problem of blade always is the hot topic by more and more people researching.This article takes some type wind turbine of the home some manufacturer as the object of study. From the quality, the rigidity as well as the aerodynamic properties, the aero-elasticity response question of blade vibration has been studied, and the essential factor and parameter of the blade aero-elasticity have been found out.The main contents are the following in the article:â‘ Based on the reasonable simplification to the blade geometry model, the simple finite element model of the wind wheel system has been established. To prove the usability of the wind wheel model, the vibration characteristic analysis is carried on,.â‘¡With the dynamic inward flow theory, the loads which have been needed to the wind wheel analysis are computed. The loads of air and generator are calculated.â‘¢In the wind wheel model foundation, the flexible dynamics model of wind turbine has been established. The model contains the wind wheel, the nacelle and the tower and so on. The wind wheel and tower are regarded as the flexible bodies, and the nacelle is regarded as the rigid body.â‘£Using dynamics model and computation load which have been established in paper, in wind turbine system, the computation of the aero-elasticity coupling is carried on, and contrasts with the result computed by Bladed, which has confirmed the accuracy of this model design.This article research has provided one reliable method to the blade design and analysis of wind turbine, which impetus manufacture domestically advancement.