作　　者： ; ; ; ; ;

机构地区： 汕头大学工学院能源研究所

出　　处： 《太阳能学报》 2010年第10期1359-1365,共7页

摘　　要： 根据叶素动量理论,考虑三维紊流风场、Beddoes-Leishman动态失速模型、惯性载荷及重力载荷计算了风力机的整机载荷,进而得到塔架动态载荷的极限工况,针对塔架的结构特点,再应用有限元理论,对水平轴风力发电机组塔架的静态(强度)、动态(屈曲、模态)特性进行了研究。以一台1.5MW水平轴风力发电机组为例,计算了塔架在不同极限工况下的载荷,并对塔筒进行了强度、屈曲和模态分析,得到了具有较大工程实用价值的塔筒静动态分析方法。 The aerodynamic characteristic of a megawatt wind turbine was calculated by applying blade element momentum （BEM） theory, integrated the Beddoes-Leishman dynamic stall modal ＆ three-dimensional turbulent initial wind field ＆ inertia loads ＆ gravity load, thus the dynamic ultimate loads of the tower were obtained. According to the structure and characteristic of the tower, and applying the finite element analysis（FEA）, the static （strength） and dynamic （buckling ＆ modal）characteristics were studied for the tower of horizontal axis wind turbines（HAWTs）. As an example, the ultimate loads of the tower of a MW HAWTs in different ultimate conditions, and the strength analysis of the tower were pro- posed. Meanwhile, taking a 1.5MW HAWT for example, the loads of tower under different extreme situations were cal- culated and the strength and modal and buckling analyses of the tower were performed. The static and dynamic character- istics analysis method of tower with more practical value in engineering application were achieved.

关 键 词： 整机载荷计算 有限元 强度分析 屈陆分析 模态分析

领　　域： [动力工程及工程热物理]