High‐frequency common‐mode voltage mitigation for current‐source inverter in transformerless photovoltaic system using active zero‐state space vector modulation.
In: IET Electric Power Applications (Wiley-Blackwell), Jg. 17 (2023-02-01), Heft 2, S. 245-255
Online
academicJournal
Zugriff:
Space vector modulation (SVM) schemes with leakage current mitigation capability for current‐source inverters (CSIs) in transformerless photovoltaic (PV) systems have not been well explored yet. In this study, the advantage of a special SVM scheme, called active zero‐state SVM (AZS‐SVM), on suppressing high‐order harmonics in the common‐mode voltage (CMV) is revealed and theoretically analysed, since the high‐frequency components in the CMV have decisive impacts on the generated leakage current. A five‐segment sequence is proposed for AZS‐SVM applied for CSIs. Both simulation and experiments are conducted on a (2.5 kW/208 V/6.94 A) grid‐connected three‐phase CSI, which validates the effectiveness of the designed AZS‐SVM to mitigate the CMV high‐order harmonics when compared to that by conventional SVM under different operating conditions. [ABSTRACT FROM AUTHOR]
Titel: |
High‐frequency common‐mode voltage mitigation for current‐source inverter in transformerless photovoltaic system using active zero‐state space vector modulation.
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Autor/in / Beteiligte Person: | Gao, Hang |
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Zeitschrift: | IET Electric Power Applications (Wiley-Blackwell), Jg. 17 (2023-02-01), Heft 2, S. 245-255 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 1751-8660 (print) |
DOI: | 10.1049/elp2.12261 |
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