风电行星齿轮系统动态均载特性分析

发布时间：2018-11-07 11:42

【摘要】：以风电增速齿轮斜齿行星轮系为研究主体,考虑到太阳轮与内啮合轮间存在的多对间隙对齿轮啮合的影响,建立行星轮系几何模型,采用接触-冲击动力学理论和刚柔耦合建模分析方法,计算分析行星轮系啮合应力的分布情况,进而得到风电斜齿行星轮系在不同转速、不同扭矩下的动态均载系数。由于风力发电机常处于变风载工况下,因此研究不同转速和扭矩时行星轮系及行星轮的动态均载系数的变化规律。结果表明:随着转速的增大,行星轮系的动态均载系数变小;随着负载的增大,动态均载减小;随着啮合过程冲击逐渐变小,在轮齿啮合过程中其刚度变化平稳,同时均载系数也会更接近于1;实际工况下风载会改变转速从而带来大的冲击作用,造成行星齿轮的破坏,为了减少风电行星轮系统齿轮的破坏,应尽可能增加浮动装置。
[Abstract]:Taking the helical gear train of wind power growth as the main body, considering the influence of many pairs of clearance between the sun wheel and the inner meshing wheel on the gear meshing, the geometric model of the planetary gear train is established. The contact impact dynamics theory and rigid-flexible coupling modeling and analysis method are used to calculate and analyze the meshing stress distribution of planetary gear train, and then the dynamic load equalization coefficient of the planetary gear train with oblique teeth is obtained under different rotational speeds and different torques. Since wind turbines are often under variable wind load conditions, the dynamic load sharing coefficients of planetary gear trains and planetary gears with different rotational speeds and torques are studied. The results show that the dynamic average load coefficient of planetary gear train decreases with the increase of rotational speed, and decreases with the increase of load. With the meshing process the impact becomes smaller and the stiffness changes smoothly and the load average coefficient is more close to 1. The wind load will change the speed of the wind under the actual working condition, which will bring great impact and cause the destruction of the planetary gear. In order to reduce the damage of the gear of the planetary gear system of wind power, the floating device should be increased as much as possible.
【作者单位】：新疆大学电气工程学院;新疆大学机械工程学院;西安交通大学机械工程学院;
【基金】：国家自然科学基金(51565056)
【分类号】：TH132.41;TM315

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