A Fast-Convergent Modulation Integral Observer for Online Detection of the Fundamental and Harmonics in Grid-Connected Power Electronics Systems
Harmonics detection is a critical element of active power filters. A previous review has shown that the recursive discrete Fourier transform and the instantaneous p-q theory are effective solutions to extracting power harmonics in single-phase and three-phase power systems, respectively. This paper...
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| Veröffentlicht in: | IEEE transactions on power electronics 2017-04, Vol.32 (4), p.2596-2607 |
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| container_title | IEEE transactions on power electronics |
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| creator | Boli Chen Pin, Gilberto Wai Man Ng Parisini, Thomas Shu-Yuen Ron Hui |
| description | Harmonics detection is a critical element of active power filters. A previous review has shown that the recursive discrete Fourier transform and the instantaneous p-q theory are effective solutions to extracting power harmonics in single-phase and three-phase power systems, respectively. This paper presents the operating principle of a new modulation function integral observer algorithm that offers a fast solution for the extraction of the fundamental current and the total harmonic current when compared with existing methods. The proposed method can be applied to both single- and three-phase systems. The observer-based algorithm has an advantageous feature of being able to be tuned offline for a specific application, having fast convergence, and producing estimated fundamental component with high circularity. It has been tested with both simulations and practical experiments for extracting the total harmonic current in a highly efficient manner. The results have confirmed that the proposed tool offers a new and highly effective alternative for the smart grid industry. |
| doi_str_mv | 10.1109/TPEL.2016.2570821 |
| format | Article |
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A previous review has shown that the recursive discrete Fourier transform and the instantaneous p-q theory are effective solutions to extracting power harmonics in single-phase and three-phase power systems, respectively. This paper presents the operating principle of a new modulation function integral observer algorithm that offers a fast solution for the extraction of the fundamental current and the total harmonic current when compared with existing methods. The proposed method can be applied to both single- and three-phase systems. The observer-based algorithm has an advantageous feature of being able to be tuned offline for a specific application, having fast convergence, and producing estimated fundamental component with high circularity. It has been tested with both simulations and practical experiments for extracting the total harmonic current in a highly efficient manner. 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A previous review has shown that the recursive discrete Fourier transform and the instantaneous p-q theory are effective solutions to extracting power harmonics in single-phase and three-phase power systems, respectively. This paper presents the operating principle of a new modulation function integral observer algorithm that offers a fast solution for the extraction of the fundamental current and the total harmonic current when compared with existing methods. The proposed method can be applied to both single- and three-phase systems. The observer-based algorithm has an advantageous feature of being able to be tuned offline for a specific application, having fast convergence, and producing estimated fundamental component with high circularity. It has been tested with both simulations and practical experiments for extracting the total harmonic current in a highly efficient manner. The results have confirmed that the proposed tool offers a new and highly effective alternative for the smart grid industry.</description><subject>Active filters</subject><subject>Active power filters (APFs)</subject><subject>Algorithms</subject><subject>Computer simulation</subject><subject>Convergence</subject><subject>Current measurement</subject><subject>Discrete Fourier transforms</subject><subject>Fourier transforms</subject><subject>fundamental extraction</subject><subject>Harmonic analysis</subject><subject>Harmonics</subject><subject>harmonics detection</subject><subject>Integrals</subject><subject>Modulation</subject><subject>Observers</subject><subject>Power harmonic filters</subject><subject>Smart grid</subject><subject>System effectiveness</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kN1KAzEQRoMoWKsPIN4EvN462WyTzWWp_YNKC9brJd2drVu2iSap0rfwkU1t8WoYOOcb5iPknkGPMVBPq-Vo3kuBiV7al5Cn7IJ0mMpYAgzkJelAnveTXCl-TW683wKwrA-sQ34GdKx9SIbWfKHboAn0xVb7VofGGjozATdOt3Sx9ugiQGvr6MK0jUH6jAHLP8zWNLwjHe9NpXcxIgraVHSq3c6apvS0MXTimup4xUQHK7q03zFt1MbNnZjXgw-487fkqtatx7vz7JK38Wg1nCbzxWQ2HMyTknMRklJVWijkZT9LJaxrRKZrwLys41s8UxrWvBIAUgil01JEnufApNRa6TxD3iWPp9wPZz_36EOxtXtn4skiZTLLBGfAI8VOVOms9w7r4sM1O-0OBYPiWHxxLL44Fl-ci4_Ow8lpEPGfl5nkuRT8FzgAgRE</recordid><startdate>201704</startdate><enddate>201704</enddate><creator>Boli Chen</creator><creator>Pin, Gilberto</creator><creator>Wai Man Ng</creator><creator>Parisini, Thomas</creator><creator>Shu-Yuen Ron Hui</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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A previous review has shown that the recursive discrete Fourier transform and the instantaneous p-q theory are effective solutions to extracting power harmonics in single-phase and three-phase power systems, respectively. This paper presents the operating principle of a new modulation function integral observer algorithm that offers a fast solution for the extraction of the fundamental current and the total harmonic current when compared with existing methods. The proposed method can be applied to both single- and three-phase systems. The observer-based algorithm has an advantageous feature of being able to be tuned offline for a specific application, having fast convergence, and producing estimated fundamental component with high circularity. It has been tested with both simulations and practical experiments for extracting the total harmonic current in a highly efficient manner. 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| issn | 0885-8993 1941-0107 |
| language | eng |
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| subjects | Active filters Active power filters (APFs) Algorithms Computer simulation Convergence Current measurement Discrete Fourier transforms Fourier transforms fundamental extraction Harmonic analysis Harmonics harmonics detection Integrals Modulation Observers Power harmonic filters Smart grid System effectiveness |
| title | A Fast-Convergent Modulation Integral Observer for Online Detection of the Fundamental and Harmonics in Grid-Connected Power Electronics Systems |
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