感应电机振动特性有限元分析  

Finite-Element Analysis on Vibration Features of Induction Motor

作　　者：温嘉斌[1] 崔斯柳[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040

出　　处：《防爆电机》2011年第1期1-4,9,共5页Explosion-proof Electric Machine

基　　金：黑龙江省教育厅科学技术研究项目(11541039);黑龙江省攻关项目(GB08A301);国家科技支撑计划(2008BAF34B04)

摘　　要：根据感应电机噪声理论,给出了感应电机振动的数学模型,并通过ANSYS软件计算得到了感应电机定子的二维、三维状态下和机座的三维状态下的固有频率和相应的振型,并将计算结果与实际计算值和实验值进行比较讨论其固有模态的特点与结构对其的影响。在铁心的模态分析中,轴向振动阶数为零时,得到的二维定子模型和三维模型的固有频率是相似的;在机壳的模态分析中,得出机壳的散热筋大大降低其固有频率,底角对其固有频率的影响较低。This paper gives a mathematic model of vibration based on the noise theory of induction motor. The inherent frequency and corresponding vibration model of induction motor stator at 2D-and 3D-state and stator frame at 3D-state are calculated by software Ansys. By comparing the calculation result with the actual calculation and test values, the influence of fea- ture and structure of inherent mode on vibration are discussed. In mode analysis of core, similar inherent frequencies of 2D-and 3D-model of stator are obtained when the order of axial vibration is zero. In mode analysis of frame, the conclusion that cooling ribs of frame can greatly reduce its inherent frequency is drawn, and thus, the influence of frame foot on inherent frequency is very small.

关 键 词：感应电机 模态分析 有限元 固有频率 

分 类 号：TM301.42[电气工程—电机]