磁致伸缩效应对感应电机振动影响的研究  

Influence of Magnetostriction Effect on Induction Motor Vibration

作　　者：闫荣格[1] 吴越超[1] 刘维影 张晓红[1] 段梦华 

机构地区：[1]河北工业大学,天津300130

出　　处：《微特电机》2016年第11期27-29,33,共4页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(51177038);国家自然科学基金重点项目(51237005);河北省研究生创新项目(220056)

摘　　要：硅钢片磁致伸缩效应是引起感应电机振动的原因之一。基于虚功原理和有限元法,建立了考虑磁致伸缩效应和磁各向异性的感应电机磁-机械耦合数值模型,根据所建立模型计算了电机空载运行时定子铁心变形、应力和振动加速度随时间的分布。为比较磁致伸缩效应与径向电磁激振力效应对电机振动的影响,分别计算了单独考虑磁致伸缩、单独考虑电磁力以及两者共同作用时的振动加速度,结果表明磁致伸缩效应对电机振动影响显著。为了验证模型,对感应电机振动进行了实验研究,发现同时考虑磁致伸缩效应和电磁力作用时的振动加速度理论计算值更贴近实验测量值,从而验证了模型的正确性,为在设计阶段计算感应电机振动大小及分布,为寻求新的减振措施提供了理论依据和计算方法。Magnetostrictive effect of silicon steel sheet is one of the causes of induction motor vibration. Based on the virtual work principle and finite element method, a magneto-mechanical coupled numerical model for induction motor inclu- ding magnetostrictive effect and magnetic anisotropy is founded. According to the proposed model, dynamic vibration distor- tion, force and acceleration of the stator core for the induction motor are calculated. In order to compare the influence of magnetostrictive effect with radial electromagnetic force effect on induction motor vibration, vibration accelerations of con- sidering magnetostrictive effect, electromagnetic force and the combination of them are calculate. The results showed that magnetostrictive effect has remarkable influence on motor vibration. To validate the presented model, vibration of the induc- tion motor is measured. It is found that the theoretical calculating value of considering magnetostrictive effect together with radial electromagnetic force effect is closer to the experimental value. This method can be used to help prediction the vibra- tion in induction motor design step and seek new vibration reduction in the future application.

关 键 词：磁致伸缩效应 磁-机械耦合数值模型 振动 感应电机 

分 类 号：TM346[电气工程—电机]