中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2011年
30期
100-108
,共9页
笼型感应电动机%断条故障%电磁场%有限元方法
籠型感應電動機%斷條故障%電磁場%有限元方法
롱형감응전동궤%단조고장%전자장%유한원방법
squirrel-cage induction motor%broken rotor bar fault%electromagnetic field%finite element method（FEM）
以一台笼型感应电动机为例,定义了电动机转子非对称运行时的电磁场计算模型。基于数值分析方法的基本原理,运用电磁场计算分析软件ansoft,对电动机转子处于不同断条故障程度时的电磁场进行了计算,并总结出了磁场中各量随故障演化程度而变化的规律,数值计算结果与实验数据的比较,验证了转子故障有限元模型的合理性。通过对不同故障情况下的气隙磁密3次谐波含量的研究,提取了可判断转子断条故障的有效特征量,为转子断条故障诊断提供了理论依据及故障诊断新方法。
以一檯籠型感應電動機為例,定義瞭電動機轉子非對稱運行時的電磁場計算模型。基于數值分析方法的基本原理,運用電磁場計算分析軟件ansoft,對電動機轉子處于不同斷條故障程度時的電磁場進行瞭計算,併總結齣瞭磁場中各量隨故障縯化程度而變化的規律,數值計算結果與實驗數據的比較,驗證瞭轉子故障有限元模型的閤理性。通過對不同故障情況下的氣隙磁密3次諧波含量的研究,提取瞭可判斷轉子斷條故障的有效特徵量,為轉子斷條故障診斷提供瞭理論依據及故障診斷新方法。
이일태롱형감응전동궤위례,정의료전동궤전자비대칭운행시적전자장계산모형。기우수치분석방법적기본원리,운용전자장계산분석연건ansoft,대전동궤전자처우불동단조고장정도시적전자장진행료계산,병총결출료자장중각량수고장연화정도이변화적규률,수치계산결과여실험수거적비교,험증료전자고장유한원모형적합이성。통과대불동고장정황하적기극자밀3차해파함량적연구,제취료가판단전자단조고장적유효특정량,위전자단조고장진단제공료이론의거급고장진단신방법。
The calculation model of the motor operating on asymmetric rotor was defined taking a squirrel-cage induction motor as example.Based on the basic principle of numerical analysis,the electromagnetic fields of the motor with different fault degree were analyzed by using the ansoft software,and the magnetic field variation was summed up.The finite element model is verified reasonable by comparing the calculated results with experimental data.The effective characteristic quantities of broken rotor bar fault can be extracted by studying the third harmonic content of air-gap flux density under different fault conditions,which can provide the theoretical basis and diagnosis method for broken rotor bar fault.
