风电机组中两级齿轮传动系统动态温度响应与实验研究

为研究风电机组齿轮传动系统的动态温度场分布特性,以SQI风电机组传动系统实验平台中两级定轴齿轮箱为研究对象,综合考虑齿轮时变啮合刚度和轴承时变刚度对系统影响,采用有限元法并计入轴系柔性建立两级平行轴齿轮箱的齿轮-轴-轴承耦合系统动力学模型.依据传热学原理对热传导,对流换热等参数进行分析,运用有限元法对系统动态温度场进行...

DYNAMIC TEMPERATURE RESPONSE AND EXPERIMENTAL STUDY OF TWO-STAGE GEAR TRANSMISSION SYSTEM IN WIND TURBINE

In order to study the dynamic temperature field distribution characteristics of the wind turbine gear transmission system,the two-stage fixed axis gearbox in the SQI wind turbine transmission system experimental platform was taken as the study object.Considering the influence of the time-varying meshing stiffness of the gear and the time-varying stiffness of the bearing on the system,the dynamic model of the gear-shaft-bearing coupling system of the two-stage parallel axis gearbox is established by using the finite element method and considering the flexibility of the shafting.Based on the principles of heat transfer,the parameters of heat conduction and convective heat transfer were analyzed.The finite element method was used to solve the system dynamic temperature field and compared with the experimental results to verify the effectiveness of the model for the analysis of the system dynamic temperature field.The relationship between different system excitation and system temperature rise under different conditions is explored.The results show that the effect of load on the temperature response of the system is more obvious at high speed,and the temperature response of the system increases steadily during the continuous speed growth.When the system is torsional resonance,the temperature response increases sharply,and the bending resonance of the shafting has little effect on the temperature response.