轴向进风和径向进风结构对电机流场和温度场的影响  

Influences of Axial and Radial Air Inlet Structures on Flow Fieldand Temperature Field of Electric Motors

作　　者：陈璐翔 曹瑞丽 Chen Luxiang;Cao Ruili(CRRC Zhuzhou Electric Machine Co.,Ltd.,Zhuzhou 412001,China)

机构地区：[1]中车株洲电机有限公司,湖南株洲412001

出　　处：《防爆电机》2023年第4期35-38,90,共5页Explosion-proof Electric Machine

摘　　要：为了研究轴向进风结构与径向进风结构对电机流场和温度场的影响,现以某自通风型电机为例,根据实际尺寸建立了两种电机模型。基于计算流体动力学(CFD)原理,对两种不同进风结构的电机进行了三维流场与温度场的数值仿真计算。结果表明轴向进风结构电机风量更大,且内部各风道流速分布相比径向进风要更加均匀。由于风道流量分配的合理性,轴向进风电机内部关键部件的温升结果同样优于径向进风。两种进风结构的仿真计算与分析为异步牵引电机通风散热的深入研究提供了一定的参考依据。In order to study the influence of axial and radial air inlet structures on flow field and temperature field of electric motor,this paper takes an self-ventilated motor as an example to establish two kinds of motor models according to its actual sizes.Based on the principle of computational fluid dynamics(CFD),the numerical simulation calculations of 3D flow field and temperature field of the motors with two kind of air inlet structures are carried out.The results show that the air volume of the motor with axial air inlet structure is larger,and the velocity distribution of the internal air duct is more uniform than the motor with radial air inlet structure.Due to the rationality of flow distribution in the air duct,the temperature rise result of key components in axial air inlet motor is also better than that in radial air inlet motor.The simulation calculation and analysis of the two air inlet structures provide a certain reference for the further study of ventilation and heat dissipation of asynchronous traction motor.

关 键 词：异步牵引电机 轴向进风 径向进风 通风散热 

分 类 号：TM301.2[电气工程—电机]