大型风力发电机塔架结构的固有频率分析

应用Receptance法建立了一种预测大型风力发电机塔架结构固有频率的理论模型.为了验证理论模型的有效性,应用理论模型对风力发电机(750 kW)塔架结构的固有频率进行了计算,并将该结果与有限元分析和实测的结果进行了对比.结果显示3种方法获得的一阶固有频率十分接近,由此表明该理论模型具有良好的可靠性,可为预测大型风力发电机塔架的固有频率提供参考.

Natural frequency analysis of large wind turbine tower structure

A theoretical model for predicting the natural frequency of tower structure of large -scale wind turbine is established by using Receptance method. In order to verify the validity of the theoretical model, the natural frequency of the tower structure of the wind turbine(750 kW)was calculated using the theoretical model, and the results were compared with the finite element analysis and measured results. The results show that the first -order natural frequencies obtained by the three methods are very close, which indicates that the theoretical model has good reliability and can provide a reference for predicting the natural frequency of the tower.