基于Matlab的大型兆瓦级风电机脉动风速时程数值模拟  

Study on Fluctuating Wind Velocity Time Series for Large Scale Megawatt Wind Turbine based on Matlab

作　　者：曹玉生[1] 包格日乐图[1] 

机构地区：[1]内蒙古工业大学土木工程学院,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2013年第4期278-284,共7页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家自然科学基金项目(NO.51269012)

摘　　要：本文旨在模拟西部内陆地区大型兆瓦级风机所受风荷载的脉动风速成分,基于风机结构自身在风荷载作用下各质点具有空间相干性的基本性质,依据风机整体结构的体型特征和脉动风功率谱特性,利用谐波叠加法对风机结构所处的随机风场的脉动风速时程进行数值模拟,通过对比计算谱与目标谱的齿合程度,确认该方法的切实可行性,为模拟高耸结构及大跨度结构在长时间随机风荷载作用下的动力时程响应提供了可靠适用的随机风荷载时程数据。Take the large scale megawatt wind turbine＇s structure in the westeru region of Inner Mongoha for example, this paper simulates the fluctuating wind velocity time series of large scale megawatt wind turbine using the Harmony Superposition method, considering the characteristics of the wind turbine shape and the fluctuating wind spectrume including blade -tower interaction. Comparing target spectrum and calculation spectrum, it can be confirm the feasibility of this method. Finally, it can be simulate the tower or large - span structure using the result of fluctuating wind velocity time series for further research.

关 键 词：风速时程 脉动风 谐波叠加法 功率谱 互干性 

分 类 号：TU391[建筑科学—结构工程]