5MW风电增速齿轮箱的设计与动力学分析

针对大功率风电增速齿轮箱设计与研究不足的问题,提出5 MW级设计方案,并进行动力学分析。采用三级传动类型,前两级为2K-H型行星轮系,三级为定轴轮系。通过输入风电载荷谱进行仿真分析与理论计算结果对比,确保计算结果的准确性。利用动力学方法:对行星架进行模态分析,使行星架模态频率避开齿轮啮合频率;对各齿轮副进行传动误差分析,得出各齿轮副传动误差的周期性变化规律与最大误差;对各轴承进行加速度响应分析,得出不同转速下的振动加速度曲线,发现各轴承加速度曲线的波峰与波谷出现重叠的规律,使齿轮箱输入转速避开了峰值。研究内容为大功率风电齿轮箱设计与可靠性分析提供方法。

Design and Dynamic Analysis for 5 MW Wind Power Gearbox

In view of the lack of design and research of the gearbox for high power wind power growth gearbox,a 5 MW-level design scheme was put forward,and the dynamics analysis was carried out.Three-stage transmission type was adopted,the first two stages were 2K H type planetary gear train,and the third stage was fixed axis gear train.Simulation analysis and theoretical calculation results were compared through the input wind power load spectrum to ensure the accuracy of the calculation results.Using the dynamic method,the modal analysis of the planetary frame was carried out to make the modal frequency of the planetary frame avoid the meshing frequency of the gears;the transmission error of each gear pair was analyzed,and the periodic variation rule of the transmission error of each gear pair and maximum error were obtained;by analyzing the acceleration response of each bearing,the vibration acceleration curves at different speeds were obtained,and the law that the crest and trough of the acceleration curves of each bearing overlap was found,which made the input speed of gearbox avoid the peak.It provides method for the design and reliability analysis of high power wind power gearbox.