Search results for " reconfiguration system"

showing 3 items of 3 documents

Proof of Concept of an Irradiance Estimation System for Reconfigurable Photovoltaic Arrays

2015

In order to reduce the mismatch effect caused by non-uniform shadows in PV arrays, reconfigurable interconnections approaches have been recently proposed in the literature. These systems usually require the knowledge of the solar radiation affecting every solar module. The aim of this work is to evaluate the effectiveness of three irradiance estimation approaches in order to define which can be well suited for reconfigurable PV arrays. It is presented a real-time solar irradiance estimation device (IrradEst), implementing the three different estimation methods. The proposed system is based on mathematical models of PV modules enabling to estimate irradiation values by sensing a combination …

EngineeringControl and OptimizationPyranometerIrradianceEnergy Engineering and Power TechnologyPhotovoltaic arraysSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSolar irradianceSettore ING-INF/01 - Elettronicalcsh:Technologyjel:Q40jel:Qjel:Q43jel:Q42jel:Q41Electronic engineeringjel:Q48jel:Q47irradiance estimationElectrical and Electronic EngineeringEngineering (miscellaneous)jel:Q49reconfigurable PV arrayMathematical modelRenewable Energy Sustainability and the Environmentbusiness.industrylcsh:Tdynamic reconfiguration systemPhotovoltaic systemjel:Q0jel:Q4Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicamonitoringProof of conceptPhotovoltaic fieldphotovoltaic fields; monitoring; dynamic reconfiguration system; irradiance estimation; reconfigurable PV arraybusinessphotovoltaic fieldsEnergy (miscellaneous)VoltageEnergies
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PV Reconfiguration Systems: a Technical and Economic Study

2017

Dynamical electrical array reconfiguration strategies for grid-connected PV systems have been proposed as solution to improve energy production due to the mismatch effect of PV plants during partial shading conditions. Strategies are based on the use of dynamic connections between PV panels given by the employment of switches that allow for each panel the series, parallel or exclusion connections, physically changing the electrical connections between the related PV modules, consequentially modifying the layout of the plant. Usually the cost of the dynamic matrix is not taken into account. This novel work evaluates the economic advantages obtained by the use of reconfiguration strategies in…

Electrical connectionPhotovoltaic; Renewable energy sources; Economic advantages; Electrical connection; Energy productions; European Countries; Grid connected PV system; Photovoltaic; Reconfiguration system; Renewable energy sourceRenewable energy sourceGrid connected PV systemEconomic advantageSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-IND/31 - ElettrotecnicaEnergy productionEuropean Countrielcsh:Electrical engineering. Electronics. Nuclear engineeringrenewable energy sourcesSettore ING-INF/07 - Misure Elettriche E ElettronichePhotovoltaiclcsh:TK1-9971Reconfiguration systemJournal of Electrical Systems
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An Optimization Device for Series Parallel Connected PV Plants

2017

In this paper it is presented a testing prototype of a reconfiguration system for photovoltaic (PV) plants. The system enables to increase the total energy output by reducing the electrical mismatch between the PV array modules. The architecture of the implemented switching matrix, performing the dynamic electrical interconnections of the PV panels, enables to reconfigure nine solar modules in a series-parallel (SP) configuration. The contribution is organized as follows. A brief state of the art is first presented, followed by a comparison between the SP and Total-Cross-Tied (TCT) connections. The prototype then is thoroughly described as well as the main design choices. Finally some tests…

Computer sciencePhotovoltaic systemExtrapolationControl reconfigurationSeries and parallel circuitsSettore ING-INF/01 - ElettronicaField (computer science)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaReal sizeSettore ING-IND/31 - ElettrotecnicaElectronic engineeringState (computer science)Total energyIndustrial and Manufacturing Engineering reconfiguration system PV plants
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