The Study Of Comparative1.5-MW Taper Cylinder Tower With Lattice Wind Turbine Tower

This paper based on the control strength, stiffness, economy and other basic parameters,make a completion of the preliminary selection and design of northwest region, a wind farmin1.5MW wind generator frustum type tower and a lattice type steel pipe concrete threecolumn tower. Through a large number of model calculation, we can determine the sensitiveparameters and control parameters which effect the design. According to the preliminarydesign scheme, we take the steel consumption as the objective function, and in certainconditions we can adjust the design parameters to improve the design. The comparativeanalysis about optimization results of the two forms of tower is from stress performance,economy, transportation, construction and other aspects.In the process of the conical tube tower design, lateral displacement is the most difficultfactor to control, and the overall utilization rate of the material is not high. In this situation,this paper puts forward that the lower uses the cylinder, the upper adopts the conicalcombination type tower, in this way can the utilization rate of materials be increased, and thetower top displacement can be reduced.In the design of the lattice type steel pipe concrete tower, the strength is the primaryimpact factors of design, material utilization rate is relatively high. When the aspect ratio ofthe tower is1to7, the abdominal rod and the transverse rod angle of45degrees, the towercan not only meet the strength, stiffness and stability requirements, but also the steelconsumption of the province.Through the contrast analysis of the tower and tower, compared with the frustum type,the overall amount of steel of the tower concrete filled steel tube three column tower reducednearly50%; and in the process of the production, large machinery using less; and theselection of the transport tool is flexible, which can reduce transportation costs and expandthe scope of transport. But the construction is of more procedures, and a relatively longperiod of construction.The results of this study can provide scientific, reasonable basis.for the design of thelarge wind turbine bearing components.