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000000047 037__ $$aENY-ARTICLE-2008-039
000000047 041__ $$aeng
000000047 100__ $$aLobos, T$$uWroclaw University of Technology, Poland
000000047 245__ $$aParameter Estimation of Distorted Signals Using Prony Method
000000047 260__ $$c2003-03-26
000000047 300__ $$a5p
000000047 500__ $$a2003 IEEE Bologna PowerTech Proceedings , Bologna, Italy, June 23-26, 2003, p. 6
000000047 520__ $$aModern frequency power converters generate a wide spectrum of harmonic components. Large converter systems can also generate noncharacteristic harmonics and interharmonics. Standard tools of harmonic analysis based on the Fourier transform assume that only harmonics are present and the periodicity intervals are fixed, while periodicity intervals in the presence of interharmonics are variable and very long. In the case of frequency converters the periods of the main component are unknown. The Prony method as applied for signal analysis in power frequency converter was tested in the paper. The method does not show the disadvantages of the traditional tools and allow exact estimation the frequencies of all or dominant components, even when the periodicity intervals are unknown. To investigate the appropriateness of the method several experiments were performed. For comparison, similar experiments were repeated using the FFT. The comparison proved the superiority of the Prony method.
000000047 6531_ $$aDiscrete Fourier transforms
000000047 6531_ $$afrequency conversion
000000047 6531_ $$afrequency estimation
000000047 6531_ $$aharmonic analysis
000000047 6531_ $$apower quality
000000047 6531_ $$apower system harmonics
000000047 700__ $$aRezmer, J$$uWroclaw University of Technology, Poland
000000047 700__ $$aSchegner, P$$uTechnical University of Dresden, Germany
000000047 8560_ $$
000000047 8564_ $$u$$zAccess to Fulltext
000000047 909CO $$$$pglobal
000000047 980__ $$aARTICLE