摘要
为研究感应电机转子故障特征在交直交变频器中的传播规律,在感应电机由交直交变频器驱动的系统中,利用逆变器和整流器的开关函数,对感应电机发生转子断条故障时的逆变器直流侧电流和整流器交流侧电流进行了解析分析,发现了对应的故障特征频率分量。分别在感应电机转子一根断条和转子两根断条的情况进行试验,试验结果也证明了理论分析的正确性,这为从变频器的整流器交流侧诊断感应电机转子故障提供了理论依据。
For discovering the transmission rules of rotor fault features of induction motors in AC-DC-AC converts,the DC-side current of converters and the AC-side current of rectifiers are analytically analyzed using switching functions of converters and rectifiers when induction motors driven by AC-DC-AC converters develop a rotor fault.The frequency components corresponding to rotor fault features are found.The experiments on an induction motor with one and two broken bars are conducted,and their results are able to prove the correctness of the theoretic analysis.The work in the paper provides theoretic foundation for detecting rotor faults from the the AC-side current of rectifiers in AC-DC-AC converters.
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2010年第4期418-421,共4页
Journal of Vibration,Measurement & Diagnosis
基金
国家自然科学基金资助项目(编号:50677069)
关键词
感应电机
转子故障
开关函数
交直交变频器
故障诊断
induction motors rotor faults switching functions AC-DC-AC converters fault diagnosis
