定子通风槽钢对中型高压电机内温度场的影响  

Influence of stator ventilation channel on the temperature field in the middle-size high voltage motor

作　　者：温嘉斌[1] 侯健[1] 于喜伟 

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]南阳防爆电机厂,河南南阳473000

出　　处：《电机与控制学报》2016年第8期40-47,共8页Electric Machines and Control

基　　金：国家自然科学基金(51275137)

摘　　要：该研究以一台YKK450-4、500 k W中型高压异步电动机为例,结合电机的结构尺寸,建立了高压异步电机三维定转子径向通风沟以及与之相邻铁心段的流体与固体耦合数学模型和物理模型;基于流体力学和传热学的理论知识,给出假设条件和边界条件,进行仿真计算,分析了计算区域的温度场;最后在定子通风槽钢长度不变的基础上,改变定子通风槽钢近轴端的径向位置,对通风沟进行重新建模,得到定子通风槽钢近轴端的径向位置对电机内温度场的影响。计算结果表明,通风槽钢的径向位置影响定子绕组的冷却效果。研究结果为提高电机的散热性能,对电机进行通风结构的优化设计提供了理论依据。According to the structural dimensions of the motor,a YKK450-4,500 kW medium high-voltage asynchronous motor is taken as an example to construct the 3 D mathematical model and physical model of stator and rotor radial ventilation ducts with the adjacent core segment of the high voltage asynchronous motor. Based on the theoretical knowledge of fluid mechanics and heat transfer, assumptions and boundary conditions were given to conduct calculation of the simulation, and the temperature field of the calculated region were analyzed. Finally, under the condition that the length of the ventilation channel of the stator remained unchanged, and the radial position near the shaft of the stator ventilation channel was changed, the model of ventilation dutcs was remodeled to obtain the influence of the installation position of the sta- tor ventilation channel on the temperature field in motor. The results show that radial position of the venti- lation channel affects the cooling effect of the stator windings, which provides a theoretical basis to im- prove the thermal dissipation performance of the motor and the optimization design of the motor ventilation structure.

关 键 词：中型高压异步电动机 流体场 温度场 通风槽钢 优化设计 

分 类 号：TM301.4[电气工程—电机]