Research On Dynamics Modeling Of Yaw System With Elastic Impact And Its Dynamics Analysis

Wind energy as a clean energy has been in various countries worldwide concern and attention, wind power technology as the main form of the use of wind energy has also been a rapid development. Wind power is a random load, wind wheel from time to time to ensure that the state is on the wind, you need to predict the subsystems with the yaw system, ready to face the wind wheel adjustment according to the wind direction. So, as one of the key components of a wind generator, yaw system performance directly determines the power level of quality and utilization of wind energy wind turbines. In addition, due to the wind turbines work in the field, poor working conditions, to bear many alternating loads and random load, and yaw wind turbine nacelle at the bottom of the system, installation and maintenance are very difficult, which runs on the yaw system stability and reliability of high demands Therefore, the study of dynamic characteristics during operation of the wind turbine yaw system is one of the important tasks of wind turbine design.In this paper, the use of external gear1.5MW wind turbine yaw system for the study, study its yaw system running gear collision dynamics and force effects on the yaw system. Concrete research work is as follows:1) The dynamic model of the wind turbine yaw system gear based on multi-body system dynamics theory. For a more realistic collision dynamics of the reaction system, the use of Newton’s collision model to build gear system collision model.2) Gear system dynamics model of the collision was simulated in ADAMS, the collision forces get the gear rule, and analysis and data extraction curve, fitted to the equation, to prepare for the next study.3) Hertz contact theory to calculate the use of wind turbine yaw bearing deformation and contact stresses during operation, and the establishment of a wind turbine yaw bearing dynamics model based on multi-body dynamics theory;4) Secondary development in ADAMS, custom simulation module corresponding bearing, bearing running through the simulation has been considering friction bearings radial force and overturning moment when the dynamic characteristics, and analyze5) Consider the impact of the impact force gear bearings, bearing dynamic model and simulate the corresponding module customization in ADAMS, get special type of bearing dynamics, and with no consideration of the impact force of the dynamics of the gear bearing for comparison, the collision impact force to the teeth come bearing operating state In this paper, the work done for the yaw system crash forces affect tooth bearing aspects of the operation in Provide a theoretical reference for engineering application foundation...