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.
出处
《电机与控制学报》
EI
CSCD
北大核心
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)
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
middle-size high voltage motor
fluid field
temperature field
ventilation channel steel
opti-mization design
作者简介
温嘉斌（1961-），男，博士，教授，研究方向为电机冷却技术、电机及电机控制
侯健（1991-），女，硕士研究生，研究方向为电机多物理场耦合分析计算；
于喜伟（1988-），男，博士，工程师，研究方向为高压异步电机设计。
