风力发电机高速级齿轮温度场及热变形仿真分析

Simulation Analysis of the Temperature Field and Thermal Deformation of Wind Turbine High Level Gear

为了研究风力发电机高速级齿轮热变形,利用ANSYS中的APDL语言建立了齿轮参数化有限元模型。根据摩擦学、传热学、啮合理论计算了有限元模型的边界条件及载荷,求解了单个齿轮稳态温度场分布,系统分析了风力发电机齿轮温度随功率和转速的变化规律。对环境温度和摩擦因数对风力发电机齿轮温度的影响进行了研究。对齿轮热-结构耦合场进行了分析,将稳态热分析求解结果作为载荷加入到结构场上,计算得到齿轮热变形,为齿轮修形打下良好的理论基础。

In order to study the high speed wind turbine stage gear thermal deformation,the parametric finite element model of the gear is established based on the APDL language of ANSYS.The finite element model boundary conditions and loads are calculated according to the theories of tribology,heat transfer and meshing.The single gear steady-state temperature field distribution is obtained.The temperature change with power and rotating speed are analyzed systematically.The influence of ambient temperature and friction coefficient on wind turbine gear temperature is investigated.The gear heat-structure coupling field is analyzed.Add the steady state thermal analysis results as the load to the structure of the field,the gear thermal deformation is calculated,and a theoretical basis for the gear modification is provided.