建立某60 kW电动汽车用永磁同步电机模型,理论分析得到最佳流道条数以及流道参数取值范围。以冷却流道宽度a、高度b作为设计变量,电机温升和流道进出口压差作为目标函数,通过Isight集成网格变形软件Sculptor和CFD计算软件Fluent,应用拉丁超立方设计方法创建样本点,并进行数据的自动提交仿真计算。根据得到的数据建立响应面模型,采用多岛遗传算法对近似模型寻优。优化后,电机温升和进出口压差分别下降了6.01%、6.81%,电机的性能和安全运行得到了保障。

The model of a 60 kW permanent magnet synchronous motor for electric vehicles was established. The optimal number of flow channels and the range of flow channel parameters were acquired by theoretical analysis. The cooling channel width aand height bwere taken as design variables, and the motor temperature rise and the inlet outlet pressure difference were the objective functions. Through the Isight integrated mesh deformation software Sculptor and CFD calculation software Fluent, the sample points were created by using the Latin hypercube design method, and the data were automatically submitted for simulation calculation. Based on the obtained data, a response surface model was established, and the multi island genetic algorithm was used to optimize the approximate model. After optimization, the motor temperature rise and inlet outlet pressure difference were decreased by 6.01% and 6.81%, respectively. The performance and safe operation of the motor were guaranteed.

TM 341:TM 351

河南省科技攻关计划项目(162102210048)