Search results for "Voltage measurement"

showing 3 items of 3 documents

Electric Power Quality Evaluation in the Presence of Electromagnetic Emissions

2013

The measurements for the assessment of the electric power quality are often carried out in hostile electromagnetic environments. The aim of the paper is analyzing if and how both radiated and conducted electromagnetic emissions can disturb the measurement system used to quantify these disturbances. To achieve the target, an experimental approach is proposed, which, by means of a simple and fast test, allows establishing if the real electromagnetic environment, where power quality analysis is performed, can alter the measurements. © 2013 IEEE.

EngineeringElectric power qualityradiated electromagnetic emissionElectromagnetic environmentpower measurementpower supply qualityelectromagnetic waveSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciElectromagnetic radiationelectric power quality measurementFrequency measurementElectronic engineeringpower system faultFrequency modulationconducted electromagnetic emissionpower quality analysisdisturbancebusiness.industrySystem of measurementElectromagnetic compatibilitypower quality analysiVoltage measurementInstrumentTime measurementelectromagnetic immunity; power quality analysisStandardElectromagneticmeasurement systemelectromagnetic immunityPower qualityhostile electromagnetic environmentbusinessSettore ING-INF/07 - Misure Elettriche E Elettroniche
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Photovoltaic plant array reconfiguration: Design of a new device

2014

An efficient strategy to improve unequally irradiated PV plants performances is based on the reconfiguration of the connections between the modules. In this paper, an algorithm, for this purpose conceived, is presented. Moreover, the design, realization and finally also the set up of a new reconfiguration system device is fully shown and discussed. The algorithm conceived simulates several possible series-parallel connections under varying irradiation conditions, and determines the optimal modules connection in order to get the maximum output power. In this way, the reconfiguration system may set up the reconfiguration strategy. The reconfiguration system prototype set up, basically consist…

EngineeringMicrocontrollerreconfiguration system devicepower system controlPV power systemSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTVactuation systemtring PV modules irradiation conditionElectricityArduinounequally irradiated PV plant performanceconditioning systemNew devicehomogeneity conditionmismatch effectOperational amplifiermaximum output powernew device designTransducerpartial shading reconfiguration prototypebusiness.industryreconfiguration system prototype set upPhotovoltaic systemArrayControl reconfigurationControl engineeringoptimal module connectionVoltage measurementeries-parallel connection simulationMicrocontrollerphotovoltaic power systemATmega2560 microcontrollerpower system simulationControl systemacquisition systemmodule connection reconfigurationArduino Mega 2560control systembusinessphotovoltaic plant array reconfigurationreconfiguration strategy
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Polymer/metal hybrid multilayers modified Schottky devices

2013

Insulating, polymethylmethacrylate (PMMA), and semiconducting, poly(3-hexylthiophene) (P3HT), nanometer thick polymers/Au nanoparticles based hybrid multilayers (HyMLs) were fabricated on p-Si single-crystal substrate. An iterative method, which involves, respectively, spin-coating (PMMA and P3HT deposition) and sputtering (Au nanoparticles deposition) techniques to prepare Au/HyMLs/p-Si Schottky device, was used. The barrier height and the ideality factor of the Au/HyMLs/p-Si Schottky devices were investigated by current-voltage measurements in the thickness range of 1-5 bilayers. It was observed that the barrier height of such hybrid layered systems can be tuned as a function of bilayers …

Ideality factorMaterials sciencePhysics and Astronomy (miscellaneous)Layered systemNanoparticleSilicon GoldNanotechnologySingle-crystal substrates DepositionSubstrate (electronics)Poly-3-hexylthiopheneSettore ING-INF/01 - ElettronicaSettore FIS/03 - Fisica Della MateriaNanoparticleSputteringPolymer; Au nanoparticles; Schottky devicePolymerHybrid multilayerConductive polymerSpin coatingbusiness.industryBarrier heightSchottky diodeSputter depositionCurrent-voltage measurementSemiconducting siliconSchottky deviceOptoelectronicsSelf-assemblybusinessAu nanoparticles
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