Automatic Suppression Method of Coal Mining Engine Carrier Frequency Converter Harmonic Interference Based on Sparse Fourier Transform
In order to enhance the harmonic interference suppression effect of the coal mining engine carrier frequency converter,the coal mining engine carrier frequency converter automatic suppression method based on sparse Fourier transform is proposed.This method first analyzes the current signal output by the coal mining engine carrier frequency converter by sparse Fourier transform,detects the harmonic interference component,and then designs an adaptive morphological filter to realize the automatic suppression of harmonic interference.The results show that the design method can effectively suppress the harmonic interference components in the output current of the converter,and the suppression effect is good.
sparse Fourier transformcoal mining engine carrier frequency converterharmonic interferenceautomatic suppression
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