0000000000053544

AUTHOR

Pietro Di Buono

showing 3 related works from this author

A novel technique for the CMRR improvement in a portable ECG system

2017

This paper presents a new technique to improve the quality of the ECG signals, increasing the Common Mode Rejection Ratio (CMRR). We developed a portable wireless Bluetooth ECG system able to acquire 12 leads, communicating with Smartphones and PCs. Many experiments have been made for measuring CMRR decay due to the difference on skin-electrodes impedances, the asymmetries of the amplifiers input stages and external components. Using some digital potentiometers, the system is able to compensate for these, increasing the CMRR of about 18 dB.

Portable Electronicsbusiness.industryComputer scienceECGAmplifierBioelectronicDigital potentiometerSettore ING-INF/01 - Elettronicalaw.inventionBluetoothProgrammable-gain amplifierCommon-mode rejection ratiolawElectronic engineeringWirelessCommon-mode signalEmbedded SystembusinessElectrical impedance
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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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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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