直驱螺杆泵用永磁低速伺服系统三维温度场研究  

Study on 3D temperature field of a permanent magnet low speed servo system used in direct-driving screw pump

作　　者：李勇[1] 姜新通[1] 赵伟[1] 徐永向[1] 刘彦彬[1] 陆永平[1] 

机构地区：[1]哈尔滨工业大学电气工程与自动化学院,黑龙江哈尔滨150001

出　　处：《电机与控制学报》2011年第6期57-61,共5页Electric Machines and Control

基　　金：国家高技术研究发展计划(863计划)(2008AA04Z204)

摘　　要：针对异步电机驱动的传统螺杆泵采油效率较低的问题,设计了直驱式螺杆泵永磁低速伺服系统。由于速度较低,温升问题是这类电机的关键研究问题之一,为了更好地分析该永磁交流伺服电机的温度场分布情况,应用三维有限元法进行计算。同时根据电机的轴向对称结构采用简化模型,缩小了求解区域范围,减少了三维场分析的计算量。最后对样机进行了负载情况下的实验测试,计算结果与实测结果是一致的,说明该模型能够满足对该类永磁低速力矩电机暂态温度场仿真计算的要求。该研究成果对这类电机在不同转速时采用何种冷却方式具有一定的参考价值。For low efficiency of traditional screw pump driven by asynchronous motor,permanent magnet low speed servo system used in Direct-driving Screw Pump was designed.Due to lower speed,temperature rise is the key problems of this type motor.In order to better analyze temperature field distribution of the permanent magnet AC servo motor,3D finite element method was used to calculate it.According to the axial symmetry structure,the simplified model of the motor was adopted to reduce the solution region,and decrease the calculation of the three-dimensional field analysis.Finally,experimental test of the prototype under the load case was carried out.Calculated results are basically consistent with the measured ones,which indicates the model can meet the transient temperature field simulation requirements of this type permanent magnet low speed torque motor.The results of the research have valuable reference worthiness for the coling-down method of the motors under difference speed of rotation.

关 键 词：螺杆泵 直驱 永磁同步电动机 温度场 仿真 

分 类 号：TM351[电气工程—电机]