0000000000326050

AUTHOR

Mariacristina Roscia

0000-0001-9422-9508

showing 4 related works from this author

Reduction of the uncertainty in the measurements of magnetic fields

2014

The paper deals with magnetic field measurement, carried out by using a broadband and isotropic instrument. These measurements are characterized by a very high uncertainty values if compared with the ones usually related to other electrical measurements. For these reasons, if the measurements are performed to assess the exposure of human beings, these large uncertainty values imply a high risk of wrong decision when there is the need to establish if a site complies or does not comply with a specified emission limits. A reduction of the uncertainty values implies a reduction of the risk. With this aim, we propose an approach which, in particular but very typical cases, allows an effective re…

PhysicsSustainability and the EnvironmentMagnetoresistancebusiness.industrymagnetic field measurementsIsotropyElectrical engineeringmeasurement uncertainty.Magnetic fieldReduction (complexity)Control theorymagnetic field measurementmeasurement uncertaintyCalibrationSettore ING-IND/09 - Sistemi per l'Energia e L'AmbienteMeasurement uncertaintyElectrical measurementsRenewable EnergyInstrumentation (computer programming)businessSettore ING-INF/07 - Misure Elettriche E Elettronichemagnetic field measurements; measurement uncertainty; Renewable Energy Sustainability and the Environment2014 International Conference on Renewable Energy Research and Application (ICRERA)
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New approach for harmonic mitigation in single-phase five-level CHBMI with fundamental frequency switching

2017

The main objective of this paper is to study and analyse the voltage output waveform of a multilevel inverter, to suggest a new approach for harmonic mitigation improving the converter performance. These last type of converters represent a new technology in the field of DC/AC electrical energy conversion, presenting advantages respect to the traditional converters. In fact, the multilevel power converters present a low harmonic content and a high voltage level. The paper considers a five-level single-phase cascaded H-bridge inverter and fundamental frequency modulation techniques. The voltage waveform analysis has allowed to identify a working area of the converter where there are lowest va…

Engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciences010309 optics0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectronic engineeringWaveformRenewable EnergyElectrical and Electronic EngineeringMultilevel Power ConverterMultilevel Power Converter; Phase Shifted Voltage Cancellation; Soft switching; Renewable Energy Sustainability and the Environment; Automotive Engineering; Electrical and Electronic EngineeringSustainability and the Environmentbusiness.industryRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringElectrical engineeringFundamental frequencyConvertersSoft switchingPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaPhase Shifted Voltage CancellationModulationAutomotive EngineeringHarmonicInverterbusinessVoltage
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Design issues for wind farms grid tied Inverter

2017

In this paper the Authors give indications for the design of a grid tied Voltage Source Inverters (VSI) aimed to optimal use in energy conversion from wind source. In particular, the design of the inverter is more focused on the control system planning, with a particular glance on the grid synchronization problem. After the exposition of general issues concerning renewable energies and associated topics, the case of a grid tied inverter is considered and a methodology of design is sketched starting from the consideration of the DC side and also considering the power device losses, the protection issue against over voltages and over-currents, snubber circuits, heat sinks and, finally the con…

EngineeringSustainability and the Environmentbusiness.industry020209 energy020208 electrical & electronic engineeringElectrical engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciGridwind farms inverter design control systemPower (physics)Renewable energyRenewable Energy Sustainability and the Environment; Automotive Engineering; Electrical and Electronic EngineeringSettore ING-IND/33 - Sistemi Elettrici per L'EnergiaControl systemAutomotive Engineering0202 electrical engineering electronic engineering information engineeringElectronic engineeringSnubberEnergy transformationInverterRenewable EnergyVoltage sourceElectrical and Electronic Engineeringbusiness2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER)
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Electrical characterization of CIGSSe photovoltaic modules

2017

This work describes the electrical characterization of CIG(S,Se) 2 sub-modules in order to compare the related performances with those obtained from traditional silicon photovoltaic modules. This characterization has been performed through means of a test bench, mainly composed by a solar simulator equipment, allowing the determination of the parameters of the prototypes under test at different irradiances and temperatures.

EngineeringTest benchSilicon020209 energyPV devicesEnergy Engineering and Power Technologychemistry.chemical_elementMechanical engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTemperature measurementCIGSSe modules; electrical characterization Introduction; PV devices; Energy Engineering and Power Technology; Renewable Energy Sustainability and the EnvironmentCIGSSe module0202 electrical engineering electronic engineering information engineeringRenewable EnergySustainability and the EnvironmentRenewable Energy Sustainability and the Environmentbusiness.industryPhotovoltaic systemPV deviceelectrical characterization IntroductionEngineering physicsCharacterization (materials science)Settore ING-IND/31 - ElettrotecnicaSettore ING-IND/33 - Sistemi Elettrici per L'EnergiachemistryCIGSSe modulesSolar simulatorbusiness2017 6th International Conference on Clean Electrical Power (ICCEP)
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