集成永磁伺服电动机电磁热耦合模型设计与分析  

Design and Analysis of Electromagnetic Thermal Coupling Model of Integrated Permanent Magnet Servo Motor

作　　者：吴轶群[1] 

机构地区：[1]江苏信息职业技术学院,无锡214153

出　　处：《微特电机》2015年第9期24-27,31,共5页Small & Special Electrical Machines

摘　　要：集成永磁伺服电动机是电机、驱动器、控制器和编码器的组合体,具有体积小、布线简单、抗干扰能力强等优点,但是其高功率密度造成了电机较高的温升。针对该问题,首先介绍了集成永磁伺服电动机的结构组成;然后基于有限元法建立了集成永磁伺服电动机的电磁热耦合模型;分析了电机本体的损耗密度,包括电机铁损、绕组铜损和驱动电路损耗;确定了电机的热边界条件并采取了非线性处理,主要包括自然对流和气隙对流;最后,进行了仿真和实验。通过数据对比可知,仿真温度与实测温度的误差在允许范围内,表明所建立的电磁热耦合模型和热传导分析方法是可行的、有效的,能够较好地预测电机的温升。Integrated permanent magnet servo motor is a combination of motor, actuator, controller and eneoder. It has a lot of advantages such as small size, simple wiring, and strong anti-interferenee. But the temperature rise may be caused by its high power density. Aiming at this problem, the arehitecture of the integrated permanent magnet servo motor was introduced. Then the integrated permanent magnet servo motor eleetromagnetie thermal coupling model was established based on the finite element method （FEN）. The motor loss density including motor driving circuit copper loss, iron loss and winding loss was analyzed. The thermal boundary conditions of the motor mainly including natural and crack convection were determined and the nonlinear processing was carried on. Finally, the simulation and experiment were conducted. The data comparison shows that the temperature error between simulation and measured results is in the allowable range. The electromagnetic heat coupling model and heat transfer analysis method are feasible and effective. The temperature rise of motor can be well predicted.

关 键 词：集成永磁伺服电动机 电磁热耦合 热载荷 热边界 有限元法 

分 类 号：TM351[电气工程—电机]