变频电机转子临界转速有限元计算  

Finite Element Calculation of Critical Speed of a Rotor in Frequency Converted Motor

作　　者：刘劲松[1] 陈得意 

机构地区：[1]重庆交通大学,重庆400074

出　　处：《机械研究与应用》2014年第5期96-98,共3页Mechanical Research & Application

摘　　要：采用有限元法对某变频电机转子进行了模态分析,计算得到了转子的临界转速、固有频率和振型。通过临界转速和振型图分析了转子的振动特性。计算结果表明,转子的设计具有良好的结构刚度,转子系统临界转速安全系数合理。最后对比了有限元法和传递矩阵法的临界转速计算结果,证实了有限元法的准确性。In this paper, modal analysis of a rotor in frequency converted motor is made by using the finite element method,and the critical speed, natural frequency and vibration of the rotor are abtained. Vibration characteristics of the rotor is ana-lyzed through the critical speed and vibration diagram. The calculation results show that design of the rotor has good structuralstiffness, and the safety factor of the critical speed of rotor system is reasonable. By comparing the critical speed results of thefinite element method and the transfer matrix method, the accuracy of the finite element method has been confirmed.

关 键 词：转子 有限元 临界转速 模态分析 

分 类 号：TM303[电气工程—电机]