大型风力发电机齿轮箱动力学分析

发布时间：2018-01-06 01:14

本文关键词：大型风力发电机齿轮箱动力学分析　出处：《沈阳工业大学》2011年硕士论文　论文类型：学位论文

【摘要】：随着世界清洁能源市场的快速发展,风能作为无污染、可再生的新能源逐渐成为人们关注和利用的焦点。风力发电机齿轮箱作为一个重要的机械传动部件,随着风力发电机组的逐渐大型化,维护成本的逐渐提高,对齿轮箱系统的稳定性要求也越来越高。由于风力的随机性特点,叶片对齿轮箱随机性载荷的作用引起了齿轮箱系统的振动,这些振动导致了齿轮箱传动系统的疲劳损坏,降低了齿轮箱系统的稳定性,增加了维护成本。为了减少由振动引起的齿轮箱系统的故障,提高系统的稳定性,需要对齿轮箱传动系统进行动力学研究。本文介绍了大型风力发电机齿轮箱动力学分析的研究发展状况和科学重要性。风力发电机齿轮箱在运行过程中受到动态载荷的作用而产生振动,引起内部构件的疲劳损坏。讨论了建立齿轮箱系统动力学模型的关键性问题,将风力发电机齿轮传动系统分解为三级传动系统,分别为第一级的行星齿轮传动系统、第二、三级的斜齿圆柱齿轮传动系统和轴系三个部分,采用集中参数法,综合考虑了齿轮的时变的综合啮合刚度、综合啮合误差、横向弯曲振动、扭转振动、轴向振动等因素的共同作用,建立了行星齿轮、斜齿圆柱齿轮和轴系的动力学模型,从而得到整体齿轮传动系统的动力学模型,建立了齿轮箱系统的动力学微分方程,在此基础上,利用振动方程的解耦理论,对微分方程采用解析法进行求解,同时采用四阶龙格一库塔公式的数值方法,对动力学微分方程进行了求解,并对齿轮传动系统进行模态分析,得出了系统的固有频率、振型等系统的模态参数；此外,利用系统的动态激励,求解系统的微分方程,揭示了系统的动态响应。
[Abstract]:With the rapid development of the world market for clean energy, wind energy is a non polluting, renewable energy has gradually become the focus of attention and use. As one of the most important mechanical parts of wind turbine gearbox, as wind turbines become larger and the maintenance cost is gradually increased. The stability requirements of gear box system is also getting the higher the wind. Because of the random characters, effects of leaves on the gear box of the randomness of the load caused by the vibration of gear system, the vibration causes fatigue damage in the gear box transmission system, reducing the stability of gearbox system, increase the maintenance cost. In order to reduce the fault of gearbox system caused by vibration. To improve the stability of the system, the need for dynamic analysis of the gear transmission system.
This paper introduces the dynamic analysis of large wind turbine gearbox development and scientific importance. The wind turbine gearbox under dynamic loads during operation and vibration, fatigue damage caused by internal components. Discusses the key problems of dynamic model of gear box, the gear transmission system of wind power generator for decomposition three transmission system, respectively, planetary gear transmission system for the first grade, second, third grade helical cylindrical gear transmission system and the system of three parts, using the lumped parameter method, considering the comprehensive gear time-varying stiffness and meshing error, lateral bending vibration, torsional vibration, axial vibration interaction etc. the factors, established the dynamics model of planetary gear, helical gear and shaft, so as to get the whole power gear transmission system model is built The dynamic differential equations of gear box system, on this basis, using the decoupling theory of vibration equation, by solving the differential equation with analytical method, numerical method using four order Runge Kutta formula, the dynamic differential equations were solved, and the gear transmission system modal analysis, obtained the inherent the system frequency, mode of vibration modal parameters of the system; in addition, the use of dynamic incentive system, solving the differential equation system, reveals the dynamic response of the system.

【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TM315;TH113

【引证文献】