大型三相异步电机气隙偏心的在线监测和故障诊断  

On-line Monitoring and Fault Diagnosing for Eccentric Gap of Large 3-Phase Asynchronous Machines

作　　者：宁玉泉[1] 

机构地区：[1]华中理工大学,湖北武汉430074

出　　处：《大电机技术》1999年第6期20-24,共5页Large Electric Machine and Hydraulic Turbine

摘　　要：本文对大型三相异步电机气隙偏心的气隙磁场进行研究，导出定子电流的边频带关系，为定子电流的在线监测和故障诊断提供理论基础，并对气隙偏心提出异步电机的状态方程。Magnetic field of eccentric gap in large 3-phase asynchronous machine is analyzed and theexpression for edge frequency band of stator current is deduced. Hence a theoretic foundation for on-linemonitoring of stator current and fault diagnosing is established. State equations of asychronous machinewith eccentric gap are presented.

关 键 词：三相异步电机 气隙偏心 在线监测 故障诊断 

分 类 号：TM343.207[电气工程—电机]