Improvement of the Hilbert Method via ESPRIT for Detecting Rotor Fault in Induction Motors at Low Slip

Boqiang Xu; Liling Sun; Lie XuGuoyi Xu

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Improvement of the Hilbert Method via ESPRIT for Detecting Rotor Fault in Induction Motors at Low Slip

机译：Improvement of the Hilbert Method via ESPRIT for Detecting Rotor Fault in Induction Motors at Low Slip

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摘要

The traditional Hilbert method to detect broken rotor bar fault in induction motors is reviewed and its major drawbacks are clearly revealed, namely, deteriorating or even completely failing when a motor operating at low slip due to the fixed constraints of fast Fourier transform (FFT) is used in this method. To overcome this, the estimation of signal parameters via rotational invariance technique (ESPRIT) is then introduced to replace FFT, and an improved Hilbert method is thus presented by conjugating the Hilbert transform and ESPRIT together. Experimental results of a small motor in a laboratory and a large motor operating on an industrial site are reported to demonstrate the effectiveness of the improved Hilbert method.

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来源
《IEEE Transactions on Energy Conversion》 |2013年第1期|225-233|共9页
作者
Boqiang Xu; Liling Sun; Lie XuGuoyi Xu;
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作者单位

State Key Lab. of Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Baoding, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类电工技术;
关键词
Hilbert transforms; fast Fourier transforms; fault diagnosis; induction motors; rotors; ESPRIT; FFT; Hilbert transform method; broken rotor bar fault detection; estimation of signal parameters via rotational invariance technique; fast Fourier transform; Current measurement; Eigenvalues and eigenfunctions; Frequency measurement; Induction motors; Multiple signal classification; Stators; Time measurement; Broken rotor bar; Hilbert transform (HT); detection; estimation of signal parameters via rotational invariance technique (ESPRIT); induction motor;

Improvement of the Hilbert Method via ESPRIT for Detecting Rotor Fault in Induction Motors at Low Slip

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