Wind-induced Dynamic Response Analysis Of Wind Tower

With the development of economy,the demand of energy in our country is increasing day by day.The traditional fossil energy has been faced with a series of problems,such as environmental pollution and Exhausted soon.The development of new energy sources has reached a point of no delay for our country.After many years of development,wind power technology has been gradually mature at the same time.In the world,large wind turbine generators have begun the process of commercialization in recent years.The green energy is being popularized and used on a large scale.After investigation and analysis of wind energy resources in our country we can see that wind energy resources in our country are very rich and we has the condition to set up large wind turbine.So the developing the wind power technology has become one of the important means to develop new energy sources technology and reduce environmental pollution.Along with the vigorous promotion of the country,the wind power technology is developing rapidly in the relevant fields in our country.The structural characteristics of wind power tower which is the wind power used has become the problem that we should care about.Wind power towers are usually built in the mountains or seas which are rich in wind energy resources.The geographical environment of these places is more complicated.The security of wind power generation tower in complex environment has become the focus problem of many scholars.Based on the functional requirements of wind power tower,we can see that the control load of wind power tower is wind load and its structure is wind sensitive structure.The natural wind is famous for its changeable and unstable,So the wind load which effect on the structure of wind power generation tower will cause the strong dynamic response.Wind loads usually as a static force on the structure at the wind tower design now,so the analysis of wind-induced dynamic response for wind tower has very important significance.The main work of this paper includes the following aspects:(1)Analysis of the load form and source of wind power tower in complex environment.(2)Analysis of the structural form and working state of wind power generation tower,and the finite element model under different conditions is established in the actual working condition.(3)Simulated random fluctuating wind load and get Wind velocity time history curves obtained from fluctuating wind load.(4)The static analysis of wind power tower structure under wind load is carried out,and the stress characteristics are compared under different working conditions.(5)Response analysis of wind turbine tower wind-induced vibration.Compare the result with the static calculation and draw the conclusion.Provide basis of structure design of wind power tower.(6)The vibration effect caused by the wind power tower in the rotation of its blade is coupled with the vibration under the action of fluctuating wind.Solving the dynamic response and compare the results with the results obtained before.