Switched-Capacitor-Inductor-based Differential Power Converter for Solar PV Modules

Kamran Ali Khan Niazi, Yongheng Yang, Jinkui He, Akif Zia Khan, Dezso Séra

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

5 Citations (Scopus)


Energy harvesting from solar photovoltaic (PV) modules is affected by partial shading (contributes to mismatch issues), which in turn affects the entire system efficiency. Various power electronics converters have thus been investigated to address the mismatch issue due to partial shading, where the charges between PV submodules (typically, three submodules in a PV module) are redistributed. As a representative of the power electronic-based techniques, differential power processing (DPP) converters can improve the power extraction from the series-connected PV submodules. In this paper, a switched-capacitor-inductor (SCL)-based DPP converter is proposed to mitigate the mismatch effect for PV modules. The proposed converter only processes the differential power, enabling extraction of the maximum power from the PV module at a submodule level. The proposed topology is analyzed and compared with the traditional (Schottky) bypassing technique through simulations. Partial shading experiments are also performed for the traditional technique. A benchmarking with the prior-art DPP converters and experimental tests on the switched-inductor (SL)-based DPP topology are presented in this paper.
Original languageEnglish
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Number of pages6
PublisherIEEE Press
Publication dateSep 2019
Article number8912615
ISBN (Electronic)9781728103952
Publication statusPublished - Sep 2019
Event2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, United States
Duration: 29 Sep 20193 Oct 2019


Conference2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Country/TerritoryUnited States
City Baltimore
SeriesIEEE Energy Conversion Congress and Exposition


  • Photovoltaic (PV) modules
  • Partial shading
  • Mismatch
  • Differential power processing (DPP) converter
  • Switched-capacitor-inductor (SCL)
  • Traditional (Schottky) bypassing
  • Switched-inductor (SL)


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