一类风力发电机齿轮传动系统的动态特性分析

发布时间：2018-06-24 06:44

本文选题：风力发电机 + 齿轮传动系统　；参考：《天津大学》2012年硕士论文

【摘要】：近年来,风力发电产业在世界范围内得到快速发展,兆瓦级风电机组已成为我国风电市场的主流产品。工作环境的特殊性,对风电机组关键部件(如增速、变桨、偏航系统等)的可靠性和使用寿命提出了很高要求。因此,开展风电增速齿轮传动系统的动态设计研究具有重要的科学意义与工程应用价值。在国家自然科学基金项目(50905122)的资助下,本文以两级行星加一级平行轴式的兆瓦级风电增速箱为例,对该类齿轮传动系统的动力学特性进行了较深入的研究,主要内容如下: 在介绍了该类风电增速齿轮传动系统的结构组成的基础上,采用集中参数法建立各级传动的平移-扭转耦合动力学模型。通过分析各构件之间的相对位移关系,推导出系统的运动微分方程,并给出时变啮合刚度、啮合误差、外部激励及连接刚度的计算方法。借助模态分析理论计算了该类风电增速齿轮传动系统的固有频率与振型。研究表明,上述系统存在三种典型的振动模式,即单级行星轮系中心构件平移振动模式、三级齿轮传动振动模式和平行轴齿轮振动模式。详细分析了系统固有特性对其刚度参数的敏感度。应用谐波平衡法求解了该类风电增速齿轮传动系统的位移响应,揭示出内部、外部激励对系统动态响应的影响规律,并计算了各啮合齿轮副的使用系数和动载系数。在此基础上,进一步分析了改善系统动态响应的措施,如相位调谐、太阳轮浮动、高速级齿轮转动惯量调整等。上述研究成果为该类风电增速齿轮传动系统的动态设计提供了理论依据。
[Abstract]:In recent years, wind power generation industry has developed rapidly in the world, and megawatt wind turbine has become the mainstream of wind power market in China. Because of the particularity of the working environment, the reliability and service life of the key components (such as speed up, propeller, yaw system, etc.) of the wind turbine are very high. Therefore, it is of great scientific significance and engineering application value to study the dynamic design of wind power acceleration gear transmission system. Supported by the National Natural Science Foundation of China (50905122), the dynamic characteristics of this kind of gear transmission system are studied in this paper with the example of two-stage planetary and one-stage parallel axis type megawatt wind power growth box. The main contents are as follows: on the basis of introducing the structure composition of the gear transmission system of this kind of wind power speed up, the coupling dynamic model of translation and torsion of all levels of transmission is established by means of the method of concentrated parameters. Based on the analysis of the relative displacement relationship between the components, the differential equations of motion of the system are derived, and the calculation methods of the time-varying meshing stiffness, meshing error, external excitation and connection stiffness are given. Based on modal analysis theory, the natural frequency and mode shape of this kind of wind power acceleration gear transmission system are calculated. The results show that there are three typical vibration modes in the system, namely, the translational vibration mode of the central component of the single-stage planetary gear train, the vibration mode of the three-stage gear transmission and the vibration mode of the parallel shaft gear. The sensitivity of the inherent characteristics of the system to its stiffness parameters is analyzed in detail. The harmonic balance method is used to solve the displacement response of this kind of wind power acceleration gear transmission system. The influence of internal and external excitation on the dynamic response of the system is revealed, and the use coefficient and dynamic load coefficient of each meshing gear pair are calculated. On this basis, the measures to improve the dynamic response of the system are further analyzed, such as phase tuning, solar wheel floating, moment of inertia adjustment of high-speed gear and so on. The above research results provide a theoretical basis for the dynamic design of the speed-increasing gear transmission system of this kind of wind power.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TM315;TH113.22

【参考文献】