摘要
针对异步风力发电机转子及端部风扇进行了建模和动特性有限元分析计算。首先对风力发电机转子的运动方程进行了描述,说明了转子临界转速的理论定义。进而分别对转子和转子端部风扇建立了有限元模型,并采用分块兰索斯法对转子和风扇的前四阶固有频率和振型进行了求解,最后针对求解结果进行了分析,指出了误差决定因素。所述方法和所得结果对于风电运行人员具有参考价值。
It presents a model of the aerogenerator rotor and the rotor fan, and caIculates the model＇ s dynamic characters based onfinite element. The motion equations of the rotor are firstly described,with the definition of the critical rotating speed offered. Then the detailed finite element model of the rotor and the fan is set up. The natural frequencies and the modal shapes of thefirstfour orders are calculated by Block Lanczos method. Finally the calculating results are discussed to find the error causes. The presented method and the gained results have reference value for the practical operators of the wind power generation.
出处
《机械设计与制造》
北大核心
2010年第9期163-165,共3页
Machinery Design & Manufacture
关键词
风力发电机
转子系统
动特性
有限元
Aerogenerator
Rotor system
Dynamic character
Finite element
