Comparative Study of Leakage Current Suppression Schemes for Five-Level Photovoltaic Inverters

Solar photovoltaic power generation is crucial for combating climate change and promoting sustainable development. As the demand for renewable energy continues to rise, photovoltaic power generation offers a viable solution. This paper focuses on suppressing leakage currents in five-level photovolta...

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Published in:MATEC web of conferences 2023, Vol.386, p.2009
Main Author: Gu, Miaomiao
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Language:English
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description Solar photovoltaic power generation is crucial for combating climate change and promoting sustainable development. As the demand for renewable energy continues to rise, photovoltaic power generation offers a viable solution. This paper focuses on suppressing leakage currents in five-level photovoltaic inverters. By comparing and analyzing two types of inverters – the single-phase T-type five-level transformerless inverter and the single-phase asymmetric five-level transformerless inverter – using simulation and experimental data, the study reveals the effective suppression of leakage currents in both designs. The T-type inverter's unique configuration and advanced control algorithms significantly reduce leakage currents, while the asymmetric inverter's optimized design and operational parameters show notable proficiency in suppressing leakage currents. This research contributes to improving the performance and reliability of multi-level transformerless photovoltaic inverters, thereby supporting the widespread adoption of solar photovoltaic power generation as a sustainable energy solution.
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