50kW永磁同步电机内流体流动特性数值研究  

Numerical investigation of fluid flow characteristics for 50 kW permanent magnet synchronous motor

作　　者：丁树业[1] 王海涛[1] 郭保成[2] 邓艳秋[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080 [2]东南大学电气工程学院,江苏南京210096

出　　处：《电机与控制学报》2014年第9期30-36,共7页Electric Machines and Control

基　　金：国家自然科学基金(51277045);黑龙江省自然科学基金(QC2012C109);黑龙江省教育厅新世纪优秀人才基金(1254-NCET-006)

摘　　要：为了阐明中小型永磁同步电机内、外冷却介质流动特性,本文以一台50kW表贴式永磁同步电机为例,基于计算流体力学(CFD)以及传热传质学基本理论,根据共轭传热原理,建立较为细致的三维流动与传热的物理模型。应用有限体积元法,对变频供电情况下的永磁同步驱动电机内温度场及流体场进行了数值计算,通过与实验数据的对比分析,验证了其计算结果的准确性以及求解方法的合理性,最后,对电机外部机壳及内部定、转子域内冷却介质的流体流动特性、传热特性以及运动迹线等进行分析,揭示了中小型永磁同步电机冷却介质性能变化规律。In order to clarify the fluid flow characteristics,which is inside and outside the middle and small permanent magnet synchronous motors（ PMSM）,a 50 kW surface PMSM was taken as research object,based on the computational fluid dynamics（ CFD） and the numerical heat transfer theory. A detailed three dimensional fluid flow and heat transfer model was set up using liquid-solid conjugate heat transfer approach. Thus,the temperature and fluid field of PMSM,operating under frequency conversion control,was simulated numerically using the finite volume method,and the correctness of the proposed model and the rationality of the solution method were verified by the temperature test of PMSM. At last,the cooling medium＇s characters,such as flow velocity,heat transfer and path line,where at the external frame and the stator and rotor area were analyzed. The changing rheologic on the performance of cooling medium for the middle and small PMSM was revealed.

关 键 词：永磁同步电机 共轭传热 三维流体场 流变特性 

分 类 号：TM315[电气工程—电机]