电流时间谐波对永磁同步电机电磁振动的影响
Influence of Current Time Harmonic on Electromagnetic Vibration of Permanent Magnet Synchronous Motor
寇成浩 1王姝 1张学磊 1刘正宇 1郭祖旭1
作者信息
- 1. 北京机械设备研究所,北京 100854
- 折叠
摘要
为了揭示电流时间谐波对电机电磁振动和噪声的影响,结合Maxwell应力方程解析计算了变频器供电时永磁同步电机的径向电磁力,并解析计算了径向电磁力的阶次和频率变化规律.指出变频器的供电使电机在低频和中高频频段产生的电磁振动和噪声均有不同程度的加剧.以一台48槽8极永磁同步电机为例,分别建立了变频器供电和正弦波供电情况下电机电磁有限元模型和结构有限元模型.通过ANSYS多物理场联合仿真对比了 2种供电方式下电机的振动响应和噪声变化,验证了解析分析的正确性.最后通过实验验证了仿真的可靠性.
Abstract
In order to reveal the influence of current time harmonics on the electromagnetic vibration and noise of the motor,the radial electromagnetic force of the permanent magnet synchronous motor(PMSM)fed by frequency converter is analyzed and calculated with Maxwell stress equation,the order and frequency of radial electromagnetic force are analyzed theoretically.It is pointed out that the electromagnetic vibration and noise produced by the motor in low frequency and middle-high frequency can be aggravated by the power supply of the inverter.Taking a 48-slot 8-pole permanent magnet synchronous motor as an example,the electromagnetic finite element model and structure finite element model of the motor under the condition of inverter and sine wave power supply are established respectively.The vibration response and noise change of the motor under these two power supply modes are compared by ANSYS multi-physical field simulation,and the correctness of the analytical analysis is verified.
关键词
永磁同步电机/径向电磁力/时间谐波/开关频率/电磁振动和噪声/ANSYS多物理场Key words
permanent magnet synchronous motor(PMSM)/radial electromagnetic force/current time harmonics/switching frequency/electromagnetic vibration and noise/ANSYS multi-physical field引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据