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Switched Capacitor-Based Modular Differential Power Processing Architecture for Large-Scale Photovoltaic Systems Under Partial Shading.
- Source :
-
IEEE Transactions on Energy Conversion . Sep2022, Vol. 37 Issue 3, p1545-1556. 12p. - Publication Year :
- 2022
-
Abstract
- Differential power processing (DPP) converters have been developed for photovoltaic (PV) panels to preclude energy yield reduction due to partial shading. In large-scale PV systems comprising numerous series-connected panels, DPP converters with good modularity are preferable because the number of series-connected panels varies depending on applications. This paper proposes a switched capacitor converter (SCC)-based modular DPP architecture for large-scale PV systems. Four panels are grouped as a module, each having a panel-level DPP converter, and modules are connected in series to form a string. The design of the panel-level DPP converter is fixed while the system can be arbitrarily extended by stacking modules, achieving good modularity. Adjacent panel-level DPP converters are dc-coupled, by which modules can be connected using long cables, mitigating installation limitations. The experimental results of the laboratory and field testing demonstrated the energy yield enhancement by 10%–20%, depending on shading conditions. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOTOVOLTAIC power systems
*COMPUTER performance
*CAPACITOR switching
Subjects
Details
- Language :
- English
- ISSN :
- 08858969
- Volume :
- 37
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Energy Conversion
- Publication Type :
- Academic Journal
- Accession number :
- 158649886
- Full Text :
- https://doi.org/10.1109/TEC.2022.3157656