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A Fast Harmonic Detection Method Based on Recursive DFT

This paper proposed a fast harmonic detection method based on recursive discrete Fourier transform, which is suitable for real-time calculation. The main features of the proposed method are that (1) it can be used to detect only specific harmonic components, (2) the recursive method needs few calcul...

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Main Authors:	Xin Limin, Xu Weisheng, Yu Youling
Format:	Conference Proceeding
Language:	English
Subjects:	Active filters Discrete Fourier transforms harmonic detection Instruments Interpolation Leak detection Power harmonic filters real-time calculation Recursive DFT Sampling methods Signal processing Signal processing algorithms spectrum leakage Time domain analysis windowing
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creator	Xin Limin Xu Weisheng Yu Youling
description	This paper proposed a fast harmonic detection method based on recursive discrete Fourier transform, which is suitable for real-time calculation. The main features of the proposed method are that (1) it can be used to detect only specific harmonic components, (2) the recursive method needs few calculation, so harmonic detection and compensation can be implemented on-line, (3) spectrum update is implemented in a step larger than one sampling period to avoid over-sampling, (4) time-domain windowing has been taken into account to reduce spectral leakage caused by asynchronous sampling. These characteristics make the proposed method especially compatible with hybrid active filter, in which structure only specific harmonic components concerned are needed to be analyzed and harmonic compensation is implemented almost immediately.
doi_str_mv	10.1109/ICEMI.2007.4351082
format	conference_proceeding
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These characteristics make the proposed method especially compatible with hybrid active filter, in which structure only specific harmonic components concerned are needed to be analyzed and harmonic compensation is implemented almost immediately.</description><subject>Active filters</subject><subject>Discrete Fourier transforms</subject><subject>harmonic detection</subject><subject>Instruments</subject><subject>Interpolation</subject><subject>Leak detection</subject><subject>Power harmonic filters</subject><subject>real-time calculation</subject><subject>Recursive DFT</subject><subject>Sampling methods</subject><subject>Signal processing</subject><subject>Signal processing algorithms</subject><subject>spectrum leakage</subject><subject>Time domain analysis</subject><subject>windowing</subject><isbn>1424411351</isbn><isbn>9781424411351</isbn><isbn>9781424411368</isbn><isbn>142441136X</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2007</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><recordid>eNo1j81Kw0AURkdEUGteQDfzAon3zk9mZlnTxgZaBMm-TDI3OGIbyUTBt7dgXR3O4nzwMXaPUCCCe2yq9a4pBIAplNQIVlywzBmLSiiFKEt7yW7_ReM1y1J6BwA0pQKtbphZ8tqnmW_8dBiPsecrmqmf43jkO5rfxsCffKLAT_5K_deU4jfxVd3esavBfyTKzlywtl631Sbfvjw31XKbRwdzPjjvrA7GBwRtSxkM6s5qbcj0NiAJMiWgCziQGQYL0nYkOn2KjNTBB7lgD3-zkYj2n1M8-Olnf74qfwG7gEWe</recordid><startdate>200708</startdate><enddate>200708</enddate><creator>Xin Limin</creator><creator>Xu Weisheng</creator><creator>Yu Youling</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200708</creationdate><title>A Fast Harmonic Detection Method Based on Recursive DFT</title><author>Xin Limin ; Xu Weisheng ; Yu Youling</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i90t-f9a985d7ad105863d715b8557e7c8d1e2e76019d1fe7ff8038be2b5a98735dad3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Active filters</topic><topic>Discrete Fourier transforms</topic><topic>harmonic detection</topic><topic>Instruments</topic><topic>Interpolation</topic><topic>Leak detection</topic><topic>Power harmonic filters</topic><topic>real-time calculation</topic><topic>Recursive DFT</topic><topic>Sampling methods</topic><topic>Signal processing</topic><topic>Signal processing algorithms</topic><topic>spectrum leakage</topic><topic>Time domain analysis</topic><topic>windowing</topic><toplevel>online_resources</toplevel><creatorcontrib>Xin Limin</creatorcontrib><creatorcontrib>Xu Weisheng</creatorcontrib><creatorcontrib>Yu Youling</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Xplore</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Xin Limin</au><au>Xu Weisheng</au><au>Yu Youling</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>A Fast Harmonic Detection Method Based on Recursive DFT</atitle><btitle>2007 8th International Conference on Electronic Measurement and Instruments</btitle><stitle>ICEMI</stitle><date>2007-08</date><risdate>2007</risdate><spage>3-972</spage><epage>3-976</epage><pages>3-972-3-976</pages><isbn>1424411351</isbn><isbn>9781424411351</isbn><eisbn>9781424411368</eisbn><eisbn>142441136X</eisbn><abstract>This paper proposed a fast harmonic detection method based on recursive discrete Fourier transform, which is suitable for real-time calculation. The main features of the proposed method are that (1) it can be used to detect only specific harmonic components, (2) the recursive method needs few calculation, so harmonic detection and compensation can be implemented on-line, (3) spectrum update is implemented in a step larger than one sampling period to avoid over-sampling, (4) time-domain windowing has been taken into account to reduce spectral leakage caused by asynchronous sampling. These characteristics make the proposed method especially compatible with hybrid active filter, in which structure only specific harmonic components concerned are needed to be analyzed and harmonic compensation is implemented almost immediately.</abstract><pub>IEEE</pub><doi>10.1109/ICEMI.2007.4351082</doi></addata></record>
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source	IEEE Electronic Library (IEL) Conference Proceedings
subjects	Active filters Discrete Fourier transforms harmonic detection Instruments Interpolation Leak detection Power harmonic filters real-time calculation Recursive DFT Sampling methods Signal processing Signal processing algorithms spectrum leakage Time domain analysis windowing
title	A Fast Harmonic Detection Method Based on Recursive DFT
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