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《Electric Power Automation Equipment》 2010-09
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Operation mode identification for induction motors based on HHT method

LIU Zhenxing,ZHANG Wenrong(Engineering Research Center of Metallurgical Automation and Detection Technique,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China)  
Because of its variety,the operation mode identification is necessary during the detection and fault diagnosis of variable-frequency induction motor.An operation mode identification method is proposed based on HHT(Hilbert-Huang Transform),which obtains adaptively the components of IMF(Intrinsic Mode Function) by EMD(Empirical Mode Decomposition) and extracts the instantaneous frequency of signal by Hilbert spectral analysis to achieve the frequency variation law in time domain and determine the operation mode.Simulation of the stator voltage based on Matlab shows the validity and rapidity of the proposed method.
【Fund】: 国家自然科学基金资助项目(60874109)~~
【CateGory Index】: TM343
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