The Stability Analysis Of Windturbine Impeller-tower Structure In The Wind Load

In recent years, the development and utilization of renewable energy is more and moreattention, while Wind energy is one of the cheapest green energy. In wind power technology,wind power turbineˊs Stability analysis has become one of the main development direction.The wind power turbine is mainly arranged in the area of open land, the area of the wind level isrelatively high, therefore, by contrast, role in wind turbine structure on wind load easier to causethe attention of people; Therefore, Vibration response analysis of wind tower, consider the leafand the cabin impact of the tower is necessary. Through the structure of the wind resistanceresearch in order to avoid force of the blade or breaking the tower under the strong wind. In thetraditional study, Extreme wind load to the structure are largely ignored of the impact of thestructure, but in fact, the different wind response the impact on the structure can not be ignored.The dynamic analysis of the wind power turbine is its wind-induced Stability analysis of thefoundation. In this paper, cone-shaped tube1.5MW wind turbine towers, for example, the firstcabin built to simplify blade-cabin and leaves-tower for the finite element model. Then useADINA software they were respectively of dynamic analysis and modal analysis and the stabilityanalysis. More accurate to calculate the wind machine structure in all kinds of load stress, strainand displacement and so on the condition, summarized the dynamic characteristics in this paper.Research work carried out by the above, you can draw the following conclusions:（1）Based on the type70/1500of the golden wind power generators for research object,use SolidWorks software to make wind power generators of calculation model, and then ADNIAimport of mesh and post-processing.（2）Through to the wind turbine and impeller of modal analysis, contrast blade frequencyand tower structure can generate resonance frequency is the main basis, verify the wind wheeland the tower to meet design requirements of structure dynamics（3）In the extreme wind speed condition, according to the blades and the tower stresscheck wind turbine strength, stiffness is in allow range. Calculation of structural displacementmaximum displacement value and position, get the stress performance index of the controltower.（4）blade dynamic analysis of three kinds of wind speed (3m/s,11m/s,25m/s)condition, analysis of the leaf about larger stress region. As the wind speed increases, maximum stress, stress area changes and other factors. Displacement of the calculation of blade in differentwind speed condition, The easiest damage with blade. Blade geometric characteristics, strengthand deformation will meet in a particular load conditions of the design specification.