基于转子偏心的开关磁阻电机振动性能研究  

Research on Vibration Performance of Switched Reluctance Motor Based on Rotor Eccentricity

作　　者：安治国[1] 王善明 李亚坤 豆旺 AN Zhiguo;WANG Shanming;LI Yakun;DOU Wang(College of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《微电机》2020年第7期10-16,共7页Micromotors

摘　　要：SRM在加工及装配的过程中会出现不同程度的转子偏心情况,这将会产生不平衡电磁力,从而降低电机性能、引起剧烈的振动及噪声,同时也会加剧轴承的磨损以及偏心程度。因此,转子偏心对SRM振动性能影响研究显得尤为重要。该文将三个不同的电机模型导入Ansoft Maxwell中进行仿真,从而得出径向磁密、不平衡电磁力以及电磁转矩等,后将其结果作为激励源导入Ansys Workbench中进行谐响应分析,得出定子上的应力分布情况,从而对定子进行分析。结果表明,辅助槽可有效降低径向力,抑制振动,但转矩脉动会有所上升,同样转子偏心也会加剧电机振动。The SRM will have different degrees of rotor eccentricity during processing and assembly,which will produce unbalanced electromagnetic force,which will reduce the performance of the motor,cause severe vibration and noise,and will also aggravate the bearing wear and eccentricity.Therefore,the study of the influence of rotor eccentricity on the vibration performance of SRM is particularly important.In this paper,three different motor models were imported into Ansoft Maxwell for simulation,so as to obtain radial magnetic density,unbalanced electromagnetic force and electromagnetic torque,etc.The result was then used as an excitation source to be introduced into the Ansys Workbench for harmonic response analysis.Finally,the stress distribution on the stator was obtained,and the stator was analyzed.The results showed that the auxiliary slot can effectively reduce the radial electromagnetic force and suppress the vibration,but it would also increase the torque ripple.Similarly,the rotor eccentricity would also aggravate the motor vibration.

关 键 词：开关磁阻电机 转子偏心 电磁振动 径向电磁力 谐响应分析 

分 类 号：TM352[电气工程—电机]