兆瓦级风力发电机塔架的模态分析  

MODAL ANALYSIS OF MW GRADE WIND GENERATOR TOWER

作　　者：刘香[1] 高镇宁[1] 李海 

机构地区：[1]内蒙古科技大学,内蒙古包头014010 [2]中国二冶集团有限公司,内蒙古包头014010

出　　处：《工业建筑》2012年第2期62-65,共4页Industrial Construction

基　　金：国家自然科学基金项目(51068021);内蒙古自治区自然科学基金项目(2009MS0718)

摘　　要：通过对内蒙古武川地区水平轴风力机塔架的两种工况进行现场测试,用DASP系统进一步分析,得出塔架的加速度谱及特征频率;利用ANSYS有限元软件完成塔架的建模和模态分析,考虑了塔顶上方机舱总质量的影响。计算结果与实测结果为避免塔架发生共振和进一步研究风力机塔架的动力反应提供了依据,其中模态数据对风电塔架设计和结构振动控制有一定的参考价值。Based on field testing of horizontal-axis wind turbine tower under two different working conditions in Wuchuan Area of Inner Mongolia, a further analysis was made by DASP system and the acceleration spectrum and characteristic frequency were obtained, then a finite element model of the tower was set up and a modal analysis was done by applying ANSYS software,taking account of the effect of engine room mass on the top of the tower. The measured results and calculated results provided a basis for avoiding resonance and further studying of structure dynamic response of wind tower, in addition ,the modal data had a valuable reference for wind tower design and structural vibration control.

关 键 词：风电塔架 环境激励 有限元 模态分析 

分 类 号：TM315[电气工程—电机]