计入齿形误差的风电机组行星齿轮传动系统动态特性研究

以风电机组行星齿轮传动系统为研究对象,考虑齿形误差因素,建立行星齿轮传动系统平移-扭转动力学分析模型,研究分析各阶次误差对系统动态特性的影响。通过对模型求解,得到不同形式误差下系统动载荷的时域历程和频谱,分析不同形式误差对系统动载荷、太阳轮浮动轨迹以及系统均载性能的影响。研究得出在太阳轮计入齿形误差后,系统动载荷波动以及频谱幅值有明显变化,三阶误差尤为明显,负载较小时二阶误差可适当降低系统动载荷,渐开线内的一阶误差显著加剧动载荷的波动并使太阳轮中心浮动轨迹半径大幅增加,且对系统均载性能影响最大,渐开线外的一阶误差对动态特性的影响极其微小。

STUDY ON DYNAMIC CHARACTERISTICS OF WIND TURBINE PLANETARY GEAR TRANSMISSION SYSTEM CONSIDERING TOOTH SHAPE ERROR

Taking the planetary gear transmission system of wind turbine as the research object, considering the tooth shape error factor, established the translation-torsion dynamic analysis model, and analyzed the influence of each order error on the dynamic characteristics of the system. By solving the model, the time-domain history and frequency spectrum of the dynamic load of the system under different forms of errors are obtained, and the effects of different forms of errors on the dynamic load of the system, the floating trajectory of the sun wheel, and the system’s load-bearing performance are analyzed. The research show that after the sun wheel included in the tooth shape error, the system dynamic load fluctuation and the spectrum amplitude have obvious changes, especially the third-order error, when the load is small, the second-order error can appropriately reduce the system dynamic load, the first-order error significantly exacerbates the fluctuation of the dynamic load and greatly increases the radius of the sun wheel center floating trajectory, and has the greatest impact on the system’s load-sharing performance, the impact of the first-order error outside the involute on the dynamic characteristics is very small.