特定频域特性的风模型研究

摘要

为了保证风力机设计过程中所需要载荷计算的准确性，以确保风力机各零部件的动力学分析和寿命计算，需要在实验室中得到与自然风具有相同数学特性的风速序列。对Kaimal 功率谱密度函数进行逆傅里叶变换得到离散时间序列，通过对该序列的频谱特性与某风场实测风速序列的频谱特性进行对比分析，结果表明，该方法能够得到具有特定功率谱密度和随机特性的风速时间序列。%In order to ensure the accuracy of the required load calculation in design processing,and the dynamic analysis and the life calculation of components of the wind turbine,it need to get the series with natural wind characteristics in laborato-ry.The article obtain discrete time series by the inverse Fourier transform of Kaimal power spectral density function.By comparing the spectral char-acteristics of the sequence with the spectral charac-teristics of the measured,the results show that this method can obtain wind speed time series with certain specific power spectral density and random characteristics.