斜槽对感应电机起动性能影响的时步有限元分析  

Time-Stepping Finite Element Analysis on the Influence of Skewed Rotors on Starting Performance of Induction Motors

作　　者：王倩[1] 王莎莎 WANG Qian;WANG Shasha(School of Automation and Information Engineering,Xi＇an University of Technology,Xi＇an 710048,China;State Grid Lianyungang Power Supply Company,Lianyungang 222003,China)

机构地区：[1]西安理工大学自动化与信息工程学院,西安710048 [2]国网连云港供电公司,江苏连云港222003

出　　处：《大电机技术》2018年第4期1-5,40,共6页Large Electric Machine and Hydraulic Turbine

基　　金：国家自然科学基金项目(51307135)

摘　　要：为了研究斜槽对笼型感应电机起动特性的影响,本文利用有限元法计算分析了不同容量电机在起动瞬间的气隙磁场分布规律,对比分析了直槽转子及具有不同槽斜度转子的起动转矩、电流以及起动过程中最大转矩的变化特点。结果表明,斜槽会导致起动初始时刻轴向截面漏磁路磁阻大小出现差异进而影响起动性能,且随着转子斜槽度的增加,起动转矩、起动电流和最大转矩均有所降低。通过与实测起动性能对比验证了文中结论的正确性及有效性。In order to study the influence of skewed rotor on the starting performance of the cage induction motors, the finite element method is used to analyze and calculate the air gap magnetic field distribution characteristics of the induction motors with different capacities, and then the starting torque,starting current and maximum torque are compared between straight rotor bars and skewed rotor bars with different skew angles. The results show that, at the starting moment, the skewed rotor may result in different leakage magnetic reluctance in axial direction and then affect the starting performance, and the starting torque, starting current and maximum torque decrease with the increase of the skew angles. The validity and effectiveness of the conclusions are verified by comparing with the experimental results.

关 键 词：感应电机 起动转矩 斜槽 时步有限元 

分 类 号：TM346[电气工程—电机]