基于有限元分析的动车组牵引电机转子断条故障特性分析  

Characteristic Performance Analysis of Traction Motor on EMU with Broken Bars Using FEM

作　　者：李永新[1] 葛兴来[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《电源学报》2015年第1期41-47,共7页Journal of Power Supply

基　　金：国家自然科学基金项目(51277153);中央高校基本科研基金项目(2682013ZT19;2682013CX017)~~

摘　　要：以CRH2型动车组的牵引电机为例,定义了电机转子非对称运行时的电磁场计算模型。基于数值分析的基本原理,利用有限元分析软件Jmag,对牵引电机故障前后的磁场、导条电流进行了计算,并分析了转子断条对电机磁场、气隙磁密、导条电流的影响。同时根据动车组的运行特点,对故障电机在牵引特性曲线上不同工作点下的运行状态进行了仿真,分析了断条故障特征分量随着电机工作点的变化情况,为后续动车组牵引电机断条故障检测技术的研究奠定了基础。The calculation model of motor operating on asymmetric rotor was defined taking a traction squirrel-cage induction motor in CRH2 as sample. Based on the basic principle of numerical analysis, magnetic field in the motor and currents in the bar were calculated for both normal motor and broken-bar motor using the Jmag software and the impact of broken-bar fault on them were summed up. According to the special control methods of electrical multiply unit（EMU）, the motor with two broken bars was simulated at different work points, and the variation of characteristic component was summed up. The work in the paper laid the foundation of diagnosis method for broken rotor bar fault,especially for traction motor in EMU.

关 键 词：动车组牵引电机 断条故障 电机磁场 特征分量 有限元方法 

分 类 号：TM3[电气工程—电机]