0000000000133719

AUTHOR

Thanh Ngo Ngoc

showing 4 related works from this author

Comparison between Different Dynamic Reconfigurations of Electrical Connections for partially shaded PV Modules

2018

This paper presents an economical investigation on the benefits related to the employment of reconfiguration systems for photovoltaic plants. More in detail, different structures of reconfigurators are proposed and, in order to evaluate the economical convenience on their installation, the Net Present Value is used as a validation element. Significant results are carried out from the proposed analysis.

Present valueComputer sciencePhotovoltaic systemControl reconfigurationEnergy Engineering and Power TechnologyReliability engineeringSettore ING-IND/31 - ElettrotecnicaSmart gridphotovoltaic array.componentComputer Networks and CommunicationArtificial Intelligencerenewable energieProduction (economics)solar moduleSafety Risk Reliability and QualityPhotovoltaic reconfiguration
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Increasing efficiency of photovoltaic systems under non-homogeneous solar irradiation using improved Dynamic Programming methods

2017

Abstract The paper presents a complete technique, based on the combination of algorithms, devoted to minimize losses and increase efficiency of Total Cross Tied (TCT) connected photovoltaic (PV) systems under non-homogeneous solar irradiation, based on irradiance equalization criterion. Irradiance equalization is achieved by changing the connections of the solar panels adaptively by a dynamic switching matrix so that total solar radiation on parallel circuits is the most equalized. In this paper, the authors introduce two algorithms. The first one is SmartChoice (SC) algorithm, which is combined with Dynamic Programming (DP) in order to create a hybrid method and obtain better results as co…

OptimizationComputer scienceRenewable Energy Sustainability and the Environment020209 energyPhotovoltaic systemEqualization (audio)Irradiance02 engineering and technologyRadiationSeries and parallel circuitsDynamic programmingSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaMatrix (mathematics)Settore ING-IND/31 - ElettrotecnicaMismatchPhotovoltaic moduleReconfiguration0202 electrical engineering electronic engineering information engineeringElectronic engineeringGeneral Materials ScienceIrradiationMaterials Science (all)
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Dynamic programming and Munkres algorithm for optimal photovoltaic arrays reconfiguration

2015

Abstract In this paper, an original formulation of the control problem for optimal PV array reconfiguration, following a Total Cross Tied layout, is proposed. The formulation follows the well-known subset sum problem, which is a special case of the knapsack problem. The reconfiguration is a measure devoted to mitigate the mismatch effect and maximize the output power of small photovoltaic plants under non-homogeneous working conditions. Therefore, reconfiguration means changing the connections of the solar panels adaptively by a dynamic switching matrix. The control system implements an easy dynamic programming algorithm to change the switches layout. The use of the Munkres assignment metho…

Mathematical optimizationRenewable Energy Sustainability and the EnvironmentComputer sciencePhotovoltaic systemMismatch Photovoltaic modules Optimization Reconfiguration.Control reconfigurationPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDynamic programmingSettore ING-IND/31 - ElettrotecnicaHungarian algorithmKnapsack problemControl systemSubset sum problemGeneral Materials ScienceSolar Energy
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A hierarchical architecture for increasing efficiency of large photovoltaic plants under non-homogeneous solar irradiation

2019

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-Para…

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
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