电动机定子槽楔松动的声检测研究  

STUDY ON ACOUSTIC DETECTION OF THE LOOSE STATOR WEDGES IN ELECTROMOTOR

作　　者：马小芹[1] 卢伟胜[1] 张晓虹[1] 谢恒堃[1] 高福斌 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049 [2]陕西省电力公司蒲城发电厂,陕西蒲城715501

出　　处：《中国电机工程学报》2002年第2期11-15,共5页Proceedings of the CSEE

基　　金：国家自然科学基金资助项目 (59837260)

摘　　要：基于薄板理论 ,建立并分析了电动机定子槽楔松动后的物理模型 ,薄板声谐振子模型。利用自行研制的声检测系统对电动机定子槽楔固定的松紧状态进行了现场实测 ,并将检测结果与传统人工检测方法得到的结果进行对比 ,提出了可用于评判定子槽楔松动程度的特征参量。同时 ,又根据薄板声谐振子模型对所测电动机的定子槽楔松动后的特征频率进行了计算。计算结果与实际检测结果相符 ,表明该薄板声谐振子模型适用于分析槽楔松动后在冲击激励下的声响应特性。In this paper,a physical model,thin plate resonator model,is proposed and analyzed based on the thin plate theory to investigate the acoustic signal response of the loose stator wedge to an impact.An in site test was performed through the acoustic detection system to detect stator wedge looseness in an electromotor.The test results are compared with the manual hand tap testing results and a parameter to estimate the wedge tightness is obtained.In addition,the characteristic frequency of a loose wedge in the electromotor is calculated according to the physical model.It has been found that experimental results were consistent with theoretical analysis.

关 键 词：电动机 定子槽楔 声检测 电磁振动 

分 类 号：TM32[电气工程—电机]