The Research Of Wind Turbine's Design Problem Based On The Weight Models

With the wind turbine becoming large,the higher cost problem of the components in wind turbines is increasingly important.For the actual mature wind turbines,the primary factor which effects cost is the components'weight.In order to reduce the cost and decrease the weight,it is necessary to research into the relationship between the components'weight and design factors of wind turbines,moreover this research has not been done in our country.So,Based on the aerodynamics,the structural dynamics, the mechanical engineering,and targeted on the relationship between the components'weight and design factors of wind turbines,this thesis founded the mostly components'weight models by the mechanism analysis,and found the primary factors which effect the components'weight,and proved the method that making use of the relationship between the components'weight and design factors of wind turbines to found the weight models is feasible by the confirmation of the actual wind turbine's parameters.The thesis analyzed the sensitivity of the weight models,gained the conclusion that rated wind speed is the first sensitive factor of the rotor's weight and the drive train's weight,and the extreme wind speed is the first sensitive factor of the tower's weight,it provides the theoretical foundation for reducing wind turbines'cost by design means.