基于风电增速箱行星轮系的转子-轴承系统模型概述

摘要

Based on the 2K-H planetary gear train of the wind gearbox and the translational-rotational model, this paper establishes the model of rotor-bearing system which considered the input shaft and output shaft of the transmission system. In the model of rotor-bearing system, we take into account the gear pair clearance, time-varying meshing stiffness and phase difference, meshing damping, integrated meshing phase, the bearing stiffness, the input shaft and output shaft stiffness. The dynamic coordinate system is established, each of coordinate system has three degrees of freedom. The method of integrated mass is applied to establish the model, and the motion differential equation is solved by the Lagrange equation. In this paper, it is summarized and compared the method of establishment about planetary train mode at home and abroad in recent years and the dynamic characteristic of the planetary gear train in practical engineering of wind power is researched. On this basis, the model of rotor-bearing system of planter gear train is established based on the wind gearbox.%基于风电增速箱2K-H直齿行星轮系，在行星轮系平移-扭转振动模型的基础上，结合传动系统的输入轴和输出轴，建立了转子-轴承系统模型。模型中考虑了齿轮副间隙，时变啮合刚度及其相位差，啮合阻尼，综合啮合误差及输入轴和输出轴两端轴承的刚度，输入轴和输出轴的刚度。建立了动坐标系，每个坐标系均有3个自由度。采用集中质量法，建立此模型，并利用拉格朗日方程法解运动微分方程。文中对近几年国内外有关行星轮系模型建立的方法进行了比较和总结，对工程实际中风力发电的行星齿轮传动系特性进行了研究。以此为基础，建立了基于风电增速箱行星轮系的转子-轴承系统的模型。