Search results for " Elettroni"

showing 10 items of 1073 documents

Editorial for the Proceedings of the 2016 E-MRS Spring Meeting Symposium T - Advanced Materials and Characterization Techniques for Solar Cells III

2016

Abstract This paper contains the editorial of the proceedings of the 2016 E-MRS spring meeting symposium T on “Advanced materials and characterization techniques for solar cells III”.

EMRSgeographyEngineeringgeography.geographical_feature_categorybusiness.industrySolar cellNanotechnologyAdvanced materialsSettore ING-INF/01 - ElettronicaCharacterization (materials science)photovoltaicEnergy (all)Energy(all)PhotovoltaicsCharacterization of solar materialSpring (hydrology)businessperovskiteEnergy Procedia
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Experimental Validation of a Novel Method for Harmonic Mitigation for a Three-Phase Five-Level Cascaded H-Bridges Inverter

2019

In modern high-power electrical drives, the efficiency of the system is a crucial constraint. Moreover, the efficiency of power converters plays a fundamental role in modern applications requiring also a limited weight, such as the electric vehicles and novel more electric aircraft. The reduction of losses pushes for systems with a dc bus and a high number of dc/ac converters, widespread in the vehicle, not burdened by a too expensive data processing system. The purpose of this article is to concur to reduce losses by proposing an innovative selective harmonic mitigation method based on the identification of the working areas where the reference harmonics present lower amplitudes. In partic…

Electric machineCascade systemsfield-programmable gate arraysinvertersmultilevel systemspower conversion harmonicsbusiness.product_categoryComputer science020208 electrical & electronic engineering02 engineering and technologyConvertersSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaIndustrial and Manufacturing EngineeringDC-BUSHarmonic analysisNonlinear systemSettore ING-IND/31 - ElettrotecnicaThree-phaseControl and Systems EngineeringHarmonics0202 electrical engineering electronic engineering information engineeringElectronic engineeringInverter020201 artificial intelligence & image processingElectrical and Electronic Engineeringbusiness
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A novel linear-non-linear digital control for DC/DC converters

2006

In this paper, a digitally controlled multi-module DC-DC converter with fast transient response, based on a linear-non-linear control is presented. The proposed digital control improves the stability of the system, cuts off the effects of limit-cycle and reduces the recovery time, by making the "effective" bandwidth of the system independent of the bandwidth of the linear control loop and limits, at the same time, output voltage variations. The novel digital control is AVP-compatible and halves the recovery time. Preliminary hardware tests on a single phase step-down converter are reported. The experimental results match simulation ones, obtained by modelling system with Matlab/Aldec mixed …

Electric potentialDC/DC ConverterDC-DC converterconstant on-timeSettore ING-INF/01 - Elettronicadigital control
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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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Modelling of wideband THz sources and detectors based on Optical Rectification and Electro-Optic Sampling

2012

Electro-Optic SamplingOptical rectificationSettore ING-INF/02 - Campi ElettromagneticiTerahertz rangeSettore ING-INF/01 - Elettronica
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5th EOS Topical Meeting on Optical Microsystems, Poster OμS13_1569798553: Analytical Model for wideband THz sources and detectors based on Optical Re…

2013

Electro-optic samplingTerahertz detectorsOptical rectificationTerahertz radiationTerahertz sourceSettore ING-INF/02 - Campi ElettromagneticiSettore ING-INF/01 - Elettronica
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Analytical Model for wideband THz sources and detectors based on Optical Rectification and Electro-Optic Sampling

2013

An analytical model describing a laser based set-up for wideband THz generation and detection is presented. Particular attention is focused on the main broadband phenomena, which occur when THz radiations have to be handled.

Electro-optic samplingTerahertz sources Terahertz detectorsOptical rectificationTerahertz radiationSettore ING-INF/02 - Campi ElettromagneticiSettore ING-INF/01 - Elettronica
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A portable electronic system for non-invasive real-time acquisition of multiple physiological signals

2019

In this work, we have designed and realised a portable and compact electronic system for the synchronous acquisition of multiple physiological signals. The system employs a Texas Instruments ADS1298 front-end with 24-bit resolution for data acquisition and supports up to 8 channels and 4 kHz sampling rate. The front-end communicates via SPI with a STM32 microcontroller which pre-processes the data and sends them through USB or Bluetooth to a suitable PC application. The system has been realized for the simultaneous acquisition of electrocardiographic (ECG) and photoplethysmographic (PPG) signals, but it can also be employed for acquiring other typologies of signals, e.g. breathing or electr…

Electrocardiographybiomedical signal processingSettore ING-INF/06 - Bioingegneria Elettronica E InformaticaPhotoplethysmographySettore ING-INF/01 - Elettronica
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Electrochemical methods for carrier type identification of ZnO films grown by pulsed laser deposition on InP.

2013

Electrochemical methods carrier type identification ZnO films pulsed laser deposition InP.Settore ING-IND/23 - Chimica Fisica ApplicataSettore ING-INF/01 - Elettronica
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Assisting Electrophysiological Substrate Quantification in Atrial Fibrillation Ablation

2019

[EN] Catheter ablation (CA) is the most popular treatment of atrial fibrillation (AF) with good results in paroxysmal AF, while its efficiency is significantly reduced in persistent AF. With the equipment used for CA strongly depending on electro-gram (EGM) fractionation quantification, the use of a reliable fractionation estimator is crucial to reduce the high recurrence rates in persistent AF. This work introduces a non-linear EGM fractionation quantification technique, which is based on coarse-grained correlation dimension (CGCD) computed over epochs of 1 second. Recordings were firstly normalized, denoised and lowpass filtered. The final CGCD value was calculated by the median CGCD valu…

Electrogram fractionationSubstrate mappingbusiness.industrymedicine.medical_treatment0206 medical engineeringCatheter ablationAtrial fibrillation02 engineering and technology030204 cardiovascular system & hematologyAblationmedicine.diseaseCorrelation dimension020601 biomedical engineeringAtrial fibrillationTECNOLOGIA ELECTRONICA03 medical and health sciencesElectrophysiology0302 clinical medicineSettore ING-INF/06 - Bioingegneria Elettronica E InformaticamedicineCatheter ablationNuclear medicinebusinessParoxysmal AF
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