Author, as appears in the article.: Olalla, Carlos; Deline, Christopher; Clement, Daniel; Levron, Yoash; Rodriguez, Miguel; Maksimovic, Dragan
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Olalla Martínez, Carlos
Keywords: Submodule-integrated converters (submics) Photovoltaic modules Partial shading Mismatch Equalization Differential power processing (dpp) Dc-dc converters Aging
Abstract: Differential power processing (DPP) architectures employ distributed, low power processing, submodule-integrated converters to mitigate mismatches in photovoltaic (PV) power systems, while introducing no insertion losses. This paper evaluates the effects of the simple voltage-balancing DPP control approach on the submodule-level maximum power point (MPP) efficiency. It is shown that the submodule MPP efficiency of voltage-balancing DPP converters exceeds 98% in the presence of worst-case MPP voltage variations due to irradiance or temperature mismatches. Furthermore, the effects of reduced converter power rating in the isolated-port DPP architecture are investigated by long-term, high-granularity simulations of five representative PV system scenarios. For partially shaded systems, it is shown that the isolated-port DPP architecture offers about two times larger energy yield improvements compared to full power processing (FPP) module-level converters, and that it outperforms module-level FPP approaches even when the power rating of DPP converters is only 20-30% of the PV system peak power. In the cases of aging-related mismatches, more than 90% of the energy yield improvements are obtained with DPP converters rated at only 10% of the PV peak power.
Thematic Areas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: carlos.olalla@urv.cat
Author identifier: 0000-0001-8333-9840
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://ieeexplore.ieee.org/document/6776458
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Transactions On Power Electronics. 30 (2): 618-631
APA: Olalla, Carlos; Deline, Christopher; Clement, Daniel; Levron, Yoash; Rodriguez, Miguel; Maksimovic, Dragan (2015). Performance of Power Limited Differential Power Processing Architectures in Mismatched PV Systems. Ieee Transactions On Power Electronics, 30(2), 618-631. DOI: 10.1109/TPEL.2014.2312980
Article's DOI: 10.1109/TPEL.2014.2312980
Entity: Universitat Rovira i Virgili
Journal publication year: 2015
Publication Type: Journal Publications
Repositori URV