扭矩
振动
空气动力学
风速
涡轮机
齿轮传动系
空气动力
转子(电动)
控制理论(社会学)
转速
工程类
结构工程
机械
物理
计算机科学
声学
螺旋锥齿轮
航空航天工程
机械工程
热力学
气象学
人工智能
控制(管理)
作者
Jianming Yang,Ping Yang
标识
DOI:10.1115/imece2017-71338
摘要
Targeting at planetary gear trains (PGTs) used in wind turbines, this paper investigates their vibration and dynamics under the aerodynamic torque of mean wind speed. Wind shear and tower shadow effects are considered in modeling the torque. A lumped parameter model is then developed to calculate the vibration and dynamics response of the PGT to the aerodynamic torque. In this model, the gear teeth and bearings are modeled as springs and the rotation of the carrier and the planet gears as well as the translation of the sun gear are taken into account. The time varying effect of the stiffness of gear mesh is incorporated into the model. Newmark algorithm is used to solve the vibration model established. In the last, the vibration response and dynamic meshing forces of the PGT are simulated and analyzed for rotors with 2 blades and 3 blades. The simulation result demonstrates that the aerodynamic torque is not a constant even under a constant wind speed. Instead, it changes with a frequency which equals the fundamental rotor frequency multiplied by the number of blades. The torque fluctuation causes corresponding vibration response and dynamic force fluctuation in the PGT.
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