基于混沌搜索的600KW风力机塔架结构优化设计

Optimization Design of Tower Structure of 600KW-Wind Turbine Based on Chaotic Search

采用有限元方法对风力发电机塔架进行模态分析,得出了不同结构参数下塔架的固有频率;然后采用支持向量机(the Support Vector Machine)建模方法,建立了塔架结构参数与固有频率之间的快速计算模型;以混沌搜索为寻优手段,对塔架结构进行了优化;将优化结果和正交优化结果进行了比较,并采用有限元方法对所得塔架结构进行强度校核。研究深化了风力机的仿真设计,取得了较好的效果。

The modal analysis of the tower structure of 600KW-Wind Turbine was carried out in the finite element method （FEM）, and the free frequencies of towers were obtained. By means of the Support Vector Machine （SVM） model method, the rapid calculation model which can map the relation between the tower＇s structure parameters and its free frequencies was established. The tower structure was optimized with the chaotic optimization, and the results of the chaotic optimization and that of orthogonal optimization were compared. The slrength of the tower designed with chaotic optimization parameters was checked with the finite element method. Research develops the simulation design of the W＇md Turbine and has a better effectiveness.