| 基于气隙转矩的笼型异步电动机转子断条监测 |
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| 引用本文： | 牛发亮,黄进,魏云冰.基于气隙转矩的笼型异步电动机转子断条监测[J].电力系统及其自动化学报,2004,16(2):13-16,35. |
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| 作者姓名： | 牛发亮 黄进 魏云冰 |
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| 作者单位： | 浙江大学电气工程学院,杭州,310027;浙江大学电气工程学院,杭州,310027;浙江大学电气工程学院,杭州,310027 |
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| 摘 要： | 提出了基于气隙转矩的鼠笼异步电动机转子断条故障在线监测方法.根据旋转磁场理论研究了气隙转矩在电机正常及转子断条运行状态下包含的谐波频率成分.当电机转子出现断条故障时,气隙转矩将会含有2sfs谐波频率分量.通过对气隙转矩的计算处理,利用小波脊线提取气隙转矩中转子断条故障特征频率分量,克服了分析定子电流信号时的不足,实现了电机转子断条故障的在线监测.实验结果证明了该方法的有效性.
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| 关 键 词： | 气隙转矩 转子断条 状态监测 异步电动机 |
| 文章编号： | 1003-8930(2004)02-0013-04 |
Monitoring of Rotor Broken Bars Based on Air-gap Torque of Induction Motor |
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| NIU Fa-liang,HUANG Jin,WEI Yun-bing.Monitoring of Rotor Broken Bars Based on Air-gap Torque of Induction Motor[J].Proceedings of the CSU-EPSA,2004,16(2):13-16,35. |
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| Authors: | NIU Fa-liang HUANG Jin WEI Yun-bing |
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| Abstract: | The method of rotor broken bars on-line monitoring in induction motor based on the air-gap torque is proposed.Harmonics of air-gap torque is investigated based on rotate magnetic field theory.When rotor broken bars appear air-gap torque will contain component of 2sf s.The broken bars faulty can be on-line monitored by extracting feature component based on wavelet ridge.Calculation of air-gap torque overcomes the disadvantages which based on current signal.Satisfied results are given through authentic experiments. |
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| Keywords: | air-gap torque rotor broken bars condition monitoring induction motor |
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