故障状态时三相永磁同步电机电磁振动分析
Electromagnetic Vibration Analysis of the Three-Phase Permanent Magnet Synchronous Motors in Faulty Conditions
葛柱 1钟博 1乔长帅 1杨川 1槐孝纪1
作者信息
摘要
文章以三相永磁同步电机为研究对象,对故障程度最严重的相间短路进行电磁振动分析,为相间故障诊断及保护提供理论参考.首先,在Maxwell软件中建立三相永磁同步电机正常工况、两相短路及三相短路三种状态下的电磁模型,并分析了额定转速下径向气隙磁密与径向电磁力.其次,利用Maxwell与Workbench联合仿真平台,将定子冲片齿部电磁力耦合至电机三维模型,以求解电机机座表面径向振动加速度频谱.仿真结果表明:相间短路下径向磁密、径向电磁力及电机表面径向电磁振动均有明显的变化特征.最后,通过试验验证了仿真模型的准确性.
Abstract
The article focuses on three-phase perma-nent magnet synchronous motors(PMSMs)as an research object and analyzes the electromagnetic vibration under the most severe fault condition of the inter-phase short-circuit,to provide a theoretical reference for fault diagnosis and protection.Firstly,electromagnetic models for three-phase PMSMs under the normal operation,two-phase short-cir-cuit and three-phase short-circuit conditions are established respectively in the Maxwell software,and then,the radial air gap magnetic density and radial electromagnetic force at rated speed are analyzed.Secondly,by using the com-bined simulation platform of Maxwell and Workbench,the electromagnetic force at the stator tooth is coupled to the three-dimensional model of the motor,so as to solve the ra-dial vibration acceleration spectrum of the motor frame sur-face.The simulation results show that there are significant changes in radial magnetic density,radial electromagnetic force,and radial electromagnetic vibration on the motor surface under the inter-phase short-circuit conditions.Final-ly,the accuracy of the simulation model is verified through experiments.
关键词
相间短路/永磁同步电机/电磁振动/电磁力Key words
phase short circuit/permanent magnet/synchronous motor/electromagnetic vibration electromag-netic force引用本文复制引用
基金项目
国家重点研发计划(2021YFB3803005)
出版年
2024
NETL
NSTL
万方数据