风力发电机旋转叶轮模态分析  

Analysis on Modal of the Rotating Rotor of Wind Generator

作　　者：汪萍萍[1] 崔新维[1] 

机构地区：[1]新疆农业大学机械交通学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2012年第4期340-344,共5页Journal of Xinjiang Agricultural University

基　　金：新疆维吾尔自治区科技厅重大攻关项目(200732141-3)

摘　　要：在多体动力学理论的基础上,基于有限元法对叶片进行离散化,建立了风力发电机柔性叶片的动力学方程;通过Matlab软件对某1.5MW风力发电机单个叶片和整个叶轮模态进行仿真分析,得到了单个叶片和整个叶轮的前几阶固有频率和固有振型,对结果进行了分析。仿真结果表明,叶轮耦合效应会产生动力刚化效应,并将其与Bladed软件计算结果进行了比较,结果比较接近。This paper is aimed to present the natural frequency and mode shape of the rotating rotor. Based on the multi-body dynamics,on account of finite element method blade about discretization, the dy- namics equation of the flexible blade of the wind generator was developed ; the simulation analysis was con- ducted on the single blade and the of the whole 1.5 MW wind generater rotor by Matlab software,the for- mer natural frequency and mode shape of the single blade and the whole rotor were figured out,whose re- sults were analyzed. The simulation results indicated that the coupling effect of the rotor can lead to dy- namic stiffening, and the comparison of these results showed that there was little difference between these two.

关 键 词：叶轮模态 固有频率 多体动力学 动力刚化 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]