Search results for "elettrici"

showing 10 items of 959 documents

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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A DSP-Based Resolver-To-Digital Converter for High-Performance Electrical Drive Applications

2016

This paper presents a low cost, simple, and highly accurate resolver-to-digital converter (RDC) for electrical drive applications based on an integrated software approach, thus allowing a significant reduction of hardware components count with significant improvements in terms of reliability, reduction of fault rate, and susceptibility to electromagnetic interference (EMI). Particular attention has been addressed to cost which is 25% off over conventional RDC. Simulations and experimental tests confirm the high quality of the proposed system.

Engineering02 engineering and technologySpeedSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPosition01 natural sciencesElectromagnetic interferenceReduction (complexity)Reliability (semiconductor)SoftwareHardwareBand-pass filterEMIRotor0202 electrical engineering electronic engineering information engineeringElectronic engineeringresolverBand-pass filterElectrical and Electronic EngineeringpeedDigital signal processingSignal resolutionbusiness.industry020208 electrical & electronic engineering010401 analytical chemistryTracking loopElectrical DriveDigital signal processing0104 chemical sciencesControl and Systems EngineeringResolverbusinessSoftware
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A set of indices to assess the real performance of daylight-linked control systems

2017

Abstract The installation of Building Automation Control Systems (BACs) in general is an effective action to achieve relevant energy savings. Commercial BACs, installed in residential or small offices, often include functions of lighting control, acting as Daylight-Linked Control Systems (DLCSs). Nevertheless, because system performance is strictly dependent on different parameters, BAC’s hardware and software configuration and as well as an inaccurate commissioning do not always allow a perfect execution of the desired tasks; therefore, the system could not work as expected. Moreover, it is well known that energy saving potential is specifically related to the variability of the light envi…

Engineering020209 energyControl (management)Real-time computing0211 other engineering and technologiesBuilding automation02 engineering and technologySet (abstract data type)021105 building & construction0202 electrical engineering electronic engineering information engineeringDaylightElectrical and Electronic EngineeringCivil and Structural EngineeringSoftware configuration managementBuilding automationSettore ING-IND/11 - Fisica Tecnica Ambientalebusiness.industryMechanical EngineeringLighting designBuilding and ConstructionEnergy consumptionDaylight Daylight-linked control systemReliability engineeringSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaControl systemBenchmark (computing)business
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Experimental analysis with FPGA controller-based of MC PWM techniques for three-phase five level cascaded H-bridge for PV applications

2016

The FPGA represents a valid solution for the design of control systems for inverters adopted in the field of PV systems because of their high flexibility of use. This paper presents an experimental analysis of the MC SPWM techniques for a three-phase, five-level, cascaded H-Bridge inverter with FPGA controller-based. Several control algorithms are implemented by means of the VHDL programming language and the output voltage waveforms obtained from the main PWM techniques are compared in terms of THD%. Simulation and experimental results are analysed, compared and discussed.

Engineering020209 energyEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciGrid connectedControl theoryVHDL0202 electrical engineering electronic engineering information engineeringElectronic engineeringMultilevel power converterRenewable EnergyField-programmable gate arrayFPGAcomputer.programming_languageTotal harmonic distortionSustainability and the EnvironmentRenewable Energy Sustainability and the Environmentbusiness.industry020208 electrical & electronic engineeringH bridgeSettore ING-IND/31 - ElettrotecnicaControl systemInverterVHDLbusinessFPGA; Grid connected; Multilevel power converter; Photovoltaic; VHDL; Energy Engineering and Power Technology; Renewable Energy Sustainability and the EnvironmentPhotovoltaiccomputerPulse-width modulation2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)
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Energy Saving in Public Transport Using Renewable Energy

2017

Hydrogen produced by renewable sources represents an interesting way to reduce the energetic dependence on fossil fuels in the transportation sector. This paper shows a feasibility study for the production, storage and distribution of hydrogen in the western Sicilian context, using three different renewable sources: wind, biomass and sea wave. The objective of this study is the evaluation of the hydrogen demand, needed to replace all diesel supplied buses with electrical buses equipped with fuel cells. An economic analysis is presented with the evaluation of the avoidable greenhouse gas emissions. Four different scenarios correlate the hydrogen demand for urban transport to the renewable en…

Engineering020209 energyGeography Planning and DevelopmentTJ807-830Context (language use)02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici010501 environmental sciencesManagement Monitoring Policy and LawTD194-19501 natural sciencesRenewable energy sourcesBiomaHydrogen economy0202 electrical engineering electronic engineering information engineeringwindGE1-350Sea wave0105 earth and related environmental sciencesMobilitySettore ING-IND/11 - Fisica Tecnica AmbientalebiomassEnvironmental effects of industries and plantsWaste managementRenewable Energy Sustainability and the Environmentbusiness.industryFossil fuelEnvironmental engineeringRenewable fuelsRenewable energyEnvironmental sciencesEnergy conservationhydrogenGreenhouse gashydrogen; wind; biomass; sea wave; mobilitybusinessEnergy sourceSustainability; Volume 9; Issue 1; Pages: 106
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Online optimization of a multi-conversion-level DC home microgrid for system efficiency enhancement

2017

In this paper, an on-line management system for the optimal efficiency operation of a multi-bus DC home distribution system is proposed. The operation of the system is discussed with reference to a distribution system with two conversion stages and three voltage levels. In each of the conversion stages, three paralleled DC/DC converters are implemented. A Genetic Algorithm performs the on-line optimization of the DC network’s global efficiency, generating the optimal current sharing ratios of the concurrent power converters. The overall DC/DC conversion system including the optimization section is modelled using MATLAB/Simulink. Thanks to the implemented online algorithm, considering …

Engineering020209 energyGeography Planning and DevelopmentTransportation02 engineering and technologyPower conversion efficiencyRobustness (computer science)Control theoryMaster-slave control0202 electrical engineering electronic engineering information engineeringElectronic engineeringPeak shavingDC microgridOnline algorithmMATLABDC microgridscomputer.programming_languageCivil and Structural Engineeringbusiness.industryRenewable Energy Sustainability and the Environmentdc microgrids active droop control current sharing genetic algorithm master-slave control power conversion efficiency peak shavingEnergy conversion efficiencyConvertersSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaActive droop controlGenetic algorithmPeaking power plantMicrogridbusinessCurrent sharingcomputerVoltageSustainable Cities and Society
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A bottom-up approach for the evaluation of the flexible quota of aggregated loads

2015

The paper presents a bottom-up approach for building the aggregated load profile of numerous passive/active users connected to the low voltage electrical system. The approach is based on the Monte Carlo method and on the knowledge of the single electric and thermal loads, generators and thermal and geometrical characteristics of the building of the single end-user. The method proposed is able to differentiate the quota of flexible and not flexible aggregate load.

EngineeringAggregate (composite)business.industryMonte Carlo methodMechanical engineeringTop-down and bottom-up designStructural engineeringLoad profileSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemFlexible loadThermalbusinessMonte CarloLow voltageBottom-up approach2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC)
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The BAC factor method: Application to a real Italian not-residential building

2016

The paper focuses the evaluation of the impact of Building Automation Control (BAC) systems on not-residential buildings. In particular, this work shows how the control, monitoring and automation actions considered by the European Standard EN 15232 can influence the electric and thermal energy consumptions of the University of Palermo DEIM (Department of Energy, Information Engineering and Mathematical Models) building. After evaluating the building energy consumptions, by using the CEI Guide 205-18, the BAC systems are chosen and sized and an economic evaluation of their installation cost is also carried out.

EngineeringArchitectural engineeringBAC factorZero-energy buildingbusiness.industryRenewable Energy Sustainability and the Environment020209 energyenergy management systemEnergy Engineering and Power Technology02 engineering and technologyEnergy consumptionAutomationTransport engineeringSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaInformation engineeringWork (electrical)Economic evaluation0202 electrical engineering electronic engineering information engineeringbuildings energy efficiencyElectrical and Electronic Engineeringbusinessbuildings control actionThermal energyBuilding automation
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DE.DU.ENER.T. project: A prototype of a sustainable energy microsystem

2016

The paper presents a prototype of a microsystem for the integration and the optimal management of renewable energy sources in order to attain a reduction of the total energy consumption of a not residential building. The system composed by the building and the prototype is an energy sustainable microsystem and is located in Italy in the city of Valderice. The microsystem has been conceived in the ENPI (European Neighborhood and Partnership Instrument) cross-border cooperation Italy - Tunisia 2007-2013 DE.DU.ENER.T. (Le DEveloppement DUrable dans la production ENERgetique dans le Territoire) research project framework. In the paper the purposes of the DE.DU.ENER.T. project are presented and …

EngineeringArchitectural engineeringEnergy EfficiencyRenewable Energy Sustainability and the Environmentbusiness.industryMicrosystemPhotovoltaic systemEnergy Engineering and Power TechnologyDemand ResponseCivil engineeringOptimal managementRenewable energySustainable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaDemand responseGeneral partnershipMicrosystemElectrical and Electronic EngineeringbusinessPhotovoltaicEfficient energy use2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC)
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Comparison on the use of PV systems in the vertical walls

2015

In this article the preliminary evaluation of the performance of a photovoltaic window is presented. The aim is to trace the behavior of next-generation systems, which favor architectonical integration. Three different systems have been taken into account: a dye sensitized solar cell (DSSC), blue and grey caved silicon panels. The systems can be placed behind a window or behind a wall of glass blocks.

EngineeringArchitectural engineeringSiliconbusiness.industryPhotovoltaic systemWindow (computing)chemistry.chemical_elementPhotovoltaic mounting systemStructural engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaSettore ING-IND/31 - ElettrotecnicaDye-sensitized solar cellgreen energychemistryintegrated photovoltaicDSSCbusinessSettore ING-INF/07 - Misure Elettriche E Elettroniche2015 International Conference on Renewable Energy Research and Applications (ICRERA)
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