异步电机三维电磁场及温度场耦合仿真分析

Coupling Simulation of 3D Electromagnetic Field and Thermal Field of Asynchronous Motor

以型号为Y100L2-4的异步电机为对象,建立了三维有限元模型。根据样机的结构特征和电磁参数,仿真计算出了样机额定负载下运行至稳态的电磁场,用以提取较为精确的发热源,进而计算其稳态温度分布。分析了电机各部分散热系数、定转子间气隙的等效传热系数,依据电机的边界条件、等效假设和材料属性,以电磁场仿真结果为基础,利用有限元软件单向耦合出相应的温度场分布图。最后通过与试验数据对比,验证仿真结果有更高的准确性。

Deals with 3D temperature estimation for the asynchronous motor Y100L2-4. According to the structure characteristics and electromagnetic parameters,the thermal fields of steady state operation with rated load has been analyzed to extract the heat source of the motor,as the foundation of the steady temperature distribution. The heat dissipation coefficient of each part in motor and the equivalent heat transfer coefficient of air gap between the rotor and stator were analyzed. According to the boundary condition and the equivalent hypothesis and material properties of the motor,the temperature field was derive by One-way coupled simulation of finite element software,based on the simulation results of electromagnetic field. the simulation results have higher accuracy was verify by comparing with the experimental data.