Review of Differential Power Processing Converter Techniques for Photovoltaic Applications

Differential power processing (DPP) converters are utilized in photovoltaic (PV) power systems to achieve high-efficiency power output, even under uneven lighting or mismatched PV cell situations. Since this DPP concept has been introduced for PV systems, various topologies and control algorithms ha...

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Bibliographic Details
Published inIEEE transactions on energy conversion Vol. 34; no. 1; pp. 351 - 360
Main Authors Jeong, Hoejeong, Lee, Hyunji, Liu, Yu-Chen, Kim, Katherine A.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
Commercialization
Computer architecture
Control algorithms
Control systems
Converters
dc-dc converter
differential power processing (DPP)
Energy conversion efficiency
Inverters
Maximum power point trackers
Microprocessors
partial power processing
Photovoltaic cells
Photovoltaic systems
Power efficiency
Process control
R&D
Research & development
Robust control
Solar cells
sub-module converter
system control
Topology
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Summary:Differential power processing (DPP) converters are utilized in photovoltaic (PV) power systems to achieve high-efficiency power output, even under uneven lighting or mismatched PV cell situations. Since this DPP concept has been introduced for PV systems, various topologies and control algorithms have been proposed and validated, showing the benefits of DPP converters systems over existing series string and full power processing converter solutions. However, DPP systems are highly coupled and can be challenging to control. Various architectures, topologies, and control strategies for both series and parallel DPP architectures are reviewed and compared. Tradeoffs of different DPP converters and topologies are discussed. Also, the power curve for the PV connected to bus, PV to PV, and PV to independent port series DPP architectures are evaluated in terms of inverter interaction. To date, the PV to PV series DPP systems have been most widely implemented and robust system-level control for all architectures has been a major research focus. Furthermore, research and development is still needed, particularly for commercialization and parallel DPP approaches for emerging PV applications.
ISSN:0885-8969
1558-0059
DOI:10.1109/TEC.2018.2876176