Harmonics Suppression for Single-Phase Grid-Connected Photovoltaic Systems in Different Operation Modes

Yongheng Yang, Keliang Zhou, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

17 Citations (Scopus)
541 Downloads (Pure)

Abstract

As the penetration of grid-connected photovoltaic (PV) systems is booming, specific grid demands are imposed on such interconnected PV systems. Therefore, achieving high reliable PV systems with high power quality is of intense interest. However, the injected current from single-phase grid-connected PV inverters may be severely affected in different operation modes. In this paper, a detailed analysis is conducted to reveal the relationship between the harmonics level with the power factor and the current level in the PV systems. A current control solution which employs an Internal Model Principle (IMP) is proposed to suppress the harmonic currents injected into the grid. Experiments are carried out to verify the analysis and the performance of the proposed control method. It is demonstrated that the proposed method presents an effective solution to harmonics suppression for single-phase grid-connected PV systems in different operation modes. Especially, it can remove higher order harmonics effectively leading to a better power quality compared to the Proportional plus Multi-Resonant Controller, and it has less computational burden.
Original languageEnglish
Title of host publicationProceedings of the IEEE Applied Power Electronics Conference and Exposition, 2013
Number of pages8
PublisherIEEE Press
Publication date2013
Pages889-896
ISBN (Print)978-1-4673-4354-1
ISBN (Electronic)978-1-4673-4353-4
DOIs
Publication statusPublished - 2013
EventThe Applied Power Electronics Conference and Exposition, 2013 - Long Beach Convention Cente, Long Beach, United States
Duration: 17 Mar 201321 Mar 2013

Conference

ConferenceThe Applied Power Electronics Conference and Exposition, 2013
LocationLong Beach Convention Cente
CountryUnited States
CityLong Beach
Period17/03/201321/03/2013
SeriesI E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
ISSN1048-2334

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