Intrinsic-Capacitance-based Differential Power Processing for Photovoltaic Modules

Kamran Ali Khan Niazi, Yongheng Yang, Dezso Sera

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

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Abstract

Partial shading reduces energy production and affects the lifetime of the overall PV system. To mitigate the mismatch effects caused by partial shading, several PV cell- or sub-panel-level techniques employing power electronics have been proposed in the literature, where discrete passive components, e.g., inductors and capacitors, are also used. In this paper, a differential power processing (DPP) technique, which utilizes only the intrinsic capacitance of solar cells, is introduced for small-scale PV applications. The developed DPP topology mitigates the mismatch effects by operating all PV cells at or near to their corresponding maximum power points (MPPs) even under mismatch conditions. The analysis of the topology and its comparison with the frequently used series- and series-parallel (SP)-connected techniques, are presented to validate its efficacy and operational capabilities, through simulation results. Moreover, a prototype is built to verify the topology. The experimental results confirm the elimination of multiple power peaks under mismatch along with maintaining the same voltages across the PV panels.
Original languageEnglish
Title of host publication2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL)
Number of pages6
PublisherIEEE
Publication dateDec 2020
Pages1-6
ISBN (Print)978-1-7281-7161-6
ISBN (Electronic)978-1-7281-7160-9
DOIs
Publication statusPublished - Dec 2020
Event21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 - Aalborg, Denmark
Duration: 9 Nov 202012 Nov 2020

Conference

Conference21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Country/TerritoryDenmark
CityAalborg
Period09/11/202012/11/2020
SeriesIEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
ISSN1093-5142

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