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Power Factor Correction and Harmonic Elimination for LCL-Filtered Three-Level Photovoltaic Inverter with Inverter-Side Current Control
Ming, Lei1; Xin, Zhen1; Kong, Xiangfei2; Yin, Changqing1; Loh, Poh Chiang1
2019-10-01
Conference Name45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Source PublicationIECON Proceedings (Industrial Electronics Conference)
Volume2019-October
Pages3405-3410
Conference DateOCT 14-17, 2019
Conference PlaceLisbon, PORTUGAL
CountryPORTUGAL
Publication PlaceIEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
PublisherIEEE Computer Society
Abstract

LCL-filtered three-level inverters have been widely used in PV applications because of their high efficiency, high power density, and low cost. In practice, the inverter-side current feedback (ICF) control has dominated the PV market due to its low-cost property. However, the grid-side current becomes more sensitive to the grid distortion owing to its indirect regulation in an ICF controlled system. To address this issue, this paper proposes a new control structure to improve the power factor and eliminate the low-order harmonics of the grid-side current simultaneously. By combining the feedforward and proportional feedback of the capacitor current, this method can effectively eliminate the reactive power induced by the capacitor of an LCL-filter. In addition, the low-order harmonics can also be eliminated if the capacitor current is sent back to the resonant controller. Effectiveness of the proposed method has finally been verified with a 5kW LCL-filtered three-phase T-type PV inverter.

KeywordHarmonic Lcl-filter Power Factor Pv Inverter
DOI10.1109/IECON.2019.8927558
URLView the original
Indexed ByCPCI-S
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Industrial
WOS IDWOS:000522050603068
Scopus ID2-s2.0-85084156264
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Document TypeConference paper
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorMing, Lei
Affiliation1.Dept. of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China
2.Dept. of Electrical and Computer Engineering, University of Macau, Macau SAR, China
Recommended Citation
GB/T 7714
Ming, Lei,Xin, Zhen,Kong, Xiangfei,et al. Power Factor Correction and Harmonic Elimination for LCL-Filtered Three-Level Photovoltaic Inverter with Inverter-Side Current Control[C], IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE Computer Society, 2019, 3405-3410.
APA Ming, Lei., Xin, Zhen., Kong, Xiangfei., Yin, Changqing., & Loh, Poh Chiang (2019). Power Factor Correction and Harmonic Elimination for LCL-Filtered Three-Level Photovoltaic Inverter with Inverter-Side Current Control. IECON Proceedings (Industrial Electronics Conference), 2019-October, 3405-3410.
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