期刊文献+

双鼠笼电动机转子断条识别 预览

Broken bar identification of double squirrel cage motor rotor
在线阅读 免费下载
收藏 分享 导出
摘要 使用分层法与多回路法建立了计及趋肤效应的独立端环型双鼠笼电动机多回路模型,并利用该模型计算分析了不同断条情况下采煤机空载试车启动过程中定子电流的时频特征。使用同步提取短时傅里叶变换对启动电流进行时频分析,基于时频分析所得曲面在幅频面与时频面的投影,定义了幅频面夹角和时频面夹角,可用于电动机上、下笼断条故障识别与导条断裂数量确定。仿真实验表明,幅频面夹角可用于判别早期上笼或者下笼断条故障;时频面夹角可用于大致确定导条断裂数量。 The multi loop model of the independent end ring double squirrel cage motor with the skin effect was established by using the layered method and multiloop method in this paper.Based on the model,the time-frequency characteristics of the stator current in the starting process of the unloaded shearer uncovered in broken bars situations were investigated.The synchro extracting short-time Fourier transform was used to analyze of the time-frequency of the starting current.For broken bar identification,the amplitude-frequency angle was defined in the amplitude-frequency plane,and the time-frequency angle was defined in the time-frequency plane.The simulation results show that the amplitudefrequency angle can be used to distinguish whether the fault belongs to the upper cage or the lower cage,and the time-frequency angle can be used to roughly determine the number of broken bars.
作者 王彦文 郭林 赵峰 杨晓洲 Wang Yanwen;Guo Lin;Zhao Feng;Yang Xiaozhou(School of Mechanical Electronic and Information Engineering,China University of Mining and Technology,Beijing 100083,China;Fushun Coal Mine Motor Manufacturing Ltd.,Fushun Liaoning 113122,China)
出处 《矿业科学学报》 2019年第2期152-161,共10页 Journal of Mining Science and Technology
基金 中央高校基本科研业务费专项资金(2017QJ10).
关键词 趋肤效应 双鼠笼 感应电动机 分层法 多回路法 断条识别 skin effect double squirrel cage induction motor layering method multiloop method broken bar identification
作者简介 王彦文(1962—),男,河北唐山人,教授,博士生导师,主要从事电力系统微机监控、矿山电气安全、煤矿继电保护、广域同步测量技术等方面的研究工作。Tel:13601292159,E-mail:wyw@cumtb.edu.cn
  • 相关文献
投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈