6533b835fe1ef96bd129ece7

RESEARCH PRODUCT

A hierarchical architecture for increasing efficiency of large photovoltaic plants under non-homogeneous solar irradiation

Pietro RomanoNinh Nguyen QuangThang Tran TrongFabio ViolaEleonora Riva SanseverinoThanh Ngo NgocThanh Ngo NgocHoang Nguyen HuyBinh Doan VanQuang Nguyen Phung

subject

OptimizationFabricationRenewable Energy Sustainability and the EnvironmentComputer science020209 energyPhotovoltaic systemControl reconfigurationTopology (electrical circuits)02 engineering and technology021001 nanoscience & nanotechnologySolar irradianceSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaMatrix (mathematics)Settore ING-IND/31 - ElettrotecnicaMismatchPhotovoltaic moduleReconfiguration0202 electrical engineering electronic engineering information engineeringKey (cryptography)Electronic engineeringGeneral Materials ScienceArchitecture0210 nano-technology

description

Abstract Under non-homogeneous solar irradiation, photovoltaic (PV) panels receive different solar irradiance, resulting in a decrease in efficiency of the PV generation system. There are a few technical options to fix this issue that goes under the name of mismatch. One of these is the reconfiguration of the PV generation system, namely changing the connections of the PV panels from the initial configuration to the optimal one. Such technique has been widely considered for small systems, due to the excessive number of required switches. In this paper, the authors propose a new method for increasing the efficiency of large PV systems under non-homogeneous solar irradiation using Series-Parallel (SP) topology. In the first part of the paper, the authors propose a method containing two key points: a switching matrix to change the connection of PV panels based on SP topology and the proof that the SP-based reconfiguration method can increase the efficiency of the photovoltaic system up to 50%. In the second part, the authors propose the extension of the method proposed in the first part to improve the efficiency of large solar generation systems by means of a two-levels architecture to minimize the cost of fabrication of the switching matrix.

yearjournalcountryeditionlanguage
2019-08-01
10.1016/j.solener.2019.07.033http://hdl.handle.net/10447/363607