基于有限元法的圆筒型直线电机温度场数值计算  

Numerical Calculation of Temperature Field for Tubular Linear Motor Based on Finite Element Method

作　　者：李立毅[1] 黄旭珍[1] 寇宝泉[1] 潘东华[1] 

机构地区：[1]哈尔滨工业大学电气学院,哈尔滨150008

出　　处：《电工技术学报》2013年第2期132-138,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50877012)

摘　　要：文章根据传热学原理开展不同工况下圆筒形直线电机温度场数值计算研究,建立了基于有限元法的圆柱坐标系下电机温度场仿真计算模型。当动子长时间工作,且做短行程往复加减速直线运动时,选择动子和定子耦合区域作为温度场计算域,建立了动子与定子耦合区域的对流换热边界条件,该边界条件反应了耦合区域向与和动子不耦合的定子段的热交换。当电机短时高过载运行时,采用两种模型计算电机温升,这两种模型分别选取动子与定子耦合区域和动子为温度场计算域。计算得到了长时间工作电机稳态温度场分布以及短时高过载时电机温升曲线。在温度场计算基础上,开展电机温升测试与计算比较研究。This paper conducts the research of numerical calculation of temperature field for a tubular linear motor under different working conditions, adopting heat transfer theory. The temperature field model of the motor based on finite element method （FEM） in cylindrical coordinates is established. When the motor works in short stroke back and forth for a long time, the coupled region of the mover and stator is selected as the temperature calculation region. And the heat convection boundary of the surface between the coupled region and uncoupled stator is established, where reflects the heat exchange. When the motor works in high over-load for a short time, two temperature field models are researched and compared, choosing the mover-stator coupling area and the mover as the calculation region respectively. And moreover, the static temperature field distribution of the motor under long time working condition and the temperature rise under high over-load as well as short time condition are obtained. Finally, on the basis of computational simulation, the results of calculation and experiment are compared.

关 键 词：圆筒形直线电机 温度场 计算域 对流换热 动子 

分 类 号：TM351[电气工程—电机]