摘要
由于具备高效率、响应快和调速范围宽等优点,永磁同步电机在各领域得到了越来越多的应用。大幅的振动影响电机运行,并产生噪声,对电机振动特性的分析尤为必要。本文根据Maxwell应力方程求解径向电磁力,运用有限元法得到电磁力随空间的分布图,利用模态分析法对电机结构振型进行分析。结果表明:低转速运行时,力波频率与模态频率接近容易引起较大振动;电机高阶模态固有频率最高,同其它振型阶次相比不易引起振动,通过实验对比验证,结果基本吻合。
Due to the advantages of high efficiency,correspondingly fast with wide speed range,permanent magnet synchronous motors have been used more and more in various fields.Large vibrations affect the operation of the motor and generate noise,which is especially necessary for the analysis of the vibration characteristics of the motor.In this paper,the radial electromagnetic force is solved according to Maxwell’s stress equation.The distribution of electromagnetic force with space is obtained by finite element method.The vibration mode of motor structure is analyzed by modal analysis method.It shows that the force wave frequency and the modal frequency are close to cause large vibration when running at low speed;the high-order mode of the motor has the highest natural frequency,and it is not easy to cause vibration compared with other modes.The experimental results are basically consistent.
作者
郑清铭
左付山
朱泳旭
李政原
张营
ZHENG Qingming;ZUO Fushan;ZHU Yongxu;LI Zhengyuan;ZHANG Ying(College of Automotive and Transportation,Nanjing Forestry University,Nanjing 210037)
出处
《森林工程》
2019年第5期76-81,共6页
Forest Engineering
基金
国家自然科学基金青年基金项目(51505229)
关键词
永磁同步电机
径向电磁力
有限元
模态
Permanent magnet synchronous motor
radial electromagnetic force
finite element
modal
