Search results for "31"

showing 10 items of 4401 documents

A Low-cost, Real-time Monitoring System for PV Plants based on ATmega 328P-PU Microcontroller

2015

This paper presents a real-time monitoring system for PV power plants based on a microcontroller Atmega328P-PU. The proposed system, whose performances can be relatively close to those achieved with commercial monitoring systems, is simple, low-cost and open source technology-based. In addition, a user interface, capable to communicate through a wireless network by using a standard communication protocol IEEE 802.15.1, is here presented. From the experimental tests described and discussed in this paper it is demonstrated that the proposed monitoring system provides, with adequate accuracy, all the information about the operating status of the PV plant, even during fault conditions.

EngineeringSIMPLE (military communications protocol)business.industryWireless networkMonitoring systemSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciFault (power engineering)MicrocontrollerSettore ING-IND/31 - ElettrotecnicaPV Plant real time monitoringEmbedded systemUser interfacebusinessCommunications protocolSettore ING-INF/07 - Misure Elettriche E ElettronichePv power
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Performance of the Shape of Partial Discharge Signal Wireless Probes

2013

This paper focuses on the evaluation of the performances of three different antenna sensors suitable of Partial Discharge (PD) measurements. Monopole, triangular and spherical antennas were simulated by means of the surface moment method. The transmitting system is modeled by a power electronic device with a fault current between two metal plate. The shape of the simulated transmitted and received signals have been compared to verify the sensor the provides the best fidelity among the three. The auto-correlation function and the Pearson correlation index are adopted here for the comparison. A discussion on the dynamic characteristic of the different antenna probes and their use in different…

EngineeringSignal processingsignal classificationDirectional antennaantenna probesbusiness.industryPartial Discharges; antenna probes; Signal Processing; diagnosticsPartial DischargesSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricidiagnostics.SignalPower (physics)Moment (mathematics)Settore ING-IND/31 - ElettrotecnicaPartial dischargeSignal ProcessingElectronic engineeringdiagnosticsProbe designWirelessantenna probeAntenna (radio)Partial DischargebusinessComputer Science::Information Theory
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PV systems in the vertical walls: A comparison of innovative structures

2016

This paper presents the performance comparison of PV windows with the purpose of tracing the behavior of next-generation systems, which could favor architectonical integration. More in detail, a dye sensitized solar cell (DSSC) and blue and grey thin film silicon panels have been analyzed. The systems can be placed behind a window or behind a wall of glass blocks. The three generation systems are then compared in terms of both efficiency and Fill Factor.

EngineeringSilicon020209 energychemistry.chemical_element02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTracingSettore ING-INF/01 - Elettronica0202 electrical engineering electronic engineering information engineeringDSSCThin filmGreen Energybusiness.industryPhotovoltaic systemElectrical engineeringWindow (computing)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaDye-sensitized solar cellchemistryPerformance comparisonOptoelectronicsFill factorbusinessIntegrated PhotovoltaicSettore ING-INF/07 - Misure Elettriche E ElettronicheSilicon Solar Cells2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)
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Interior permanent magnet synchronous motors: Impact of the variability of the parameters on their efficiency

2016

In the scientific literature, various authors presented different control strategies aimed to increase the efficiency of the interior permanent magnet synchronous motors. These strategies, starting from a well-known mathematical model of the dynamic behaviour of the motor, are able to reduce the power losses acting on the magnetizing component of the stator current. However, none of the proposed approaches takes into account that, varying the working conditions of the motor, also the values of the parameters, which have an impact on the power losses, can vary. In this paper, therefore, starting from an accurate measurement of the motor characteristics for various values of speed and load, w…

EngineeringStatorEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesElectrical motor speed control strategielaw.inventionQuantitative Biology::Subcellular ProcessesControl theorylawComponent (UML)0103 physical sciences0202 electrical engineering electronic engineering information engineering010302 applied physicsMotor powerPermanent magnet synchronous motorbusiness.industryRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringControl engineeringPower (physics)IPMSMSettore ING-IND/31 - ElettrotecnicaEfficiency increaseReduction (mathematics)business
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A cogging torque minimization procedure for IPMSMs based on different laminate geometry

2016

This paper presents a possible minimization procedure of the cogging torque generated by an IPMSM (Interior Permanent Magnet Synchronous Machine) with a progressive modification of a basic geometrical structure of rotor laminates. More in detail, an IPMSM model is analyzed by using a Finite Element Method (FEM) approach. Then, other IPMSM models, which are obtained by modifying the geometry of the IPMSM rotor laminates and by maintaining the same stator configuration, are proposed and discussed. From the obtained simulation results, the cogging torque components for each structure are determined by means of FEM and compared to each other. From this comparison, it can be stated that the cogg…

EngineeringStatorGeometry02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural scienceslaw.inventionlaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringFEM analysi010302 applied physicsRotor (electric)business.industry020208 electrical & electronic engineeringpermanent magnetsCogging torqueCogging torqueFinite element methodIPMSMSettore ING-IND/31 - ElettrotecnicaQuantitative Biology::Quantitative MethodsMagnetMinificationbusinessPermanent magnet synchronous machine2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER)
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Piezoelectric Rainfall Energy Harvester Performance by an Advanced Arduino-Based Measuring System

2018

This paper presents the performances of rainfall energy harvesting through the use of a piezoelectric transducer and an Arduino-based measuring system. Different studies agree on the possibility of generating electricity from rainfall, but to date, a study on measuring the quantity of energy produced during rainfall is still missing. The present study begins with results obtained from laboratory researchers using piezoelectric transducers and oscilloscopes, finalized to measure the energy produced from a single raindrop, and concludes with an ad hoc Arduino-based measuring system, aimed to measure the actual amount of electrical energy produced by a piezoelectric transducer that is exposed …

EngineeringStreRain02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPiezoelectric materialSettore ING-INF/01 - Elettronica01 natural sciencesIndustrial and Manufacturing EngineeringAutomotive engineeringEnergy measurementpiezoelectric sensorArduino0103 physical sciencesEnergy harvesting; Energy measurement; Piezoelectric materials; piezoelectric sensor; Piezoelectric transducers; Rain; Stress; Control and Systems Engineering; Industrial and Manufacturing Engineering; Electrical and Electronic EngineeringElectrical and Electronic EngineeringOscilloscope010302 applied physicsEnergy harvestingbusiness.industryElectric potential energyElectrical engineeringPiezoelectric transducer021001 nanoscience & nanotechnologyPiezoelectricitySettore ING-IND/31 - ElettrotecnicaElectricity generationTransducerControl and Systems Engineering0210 nano-technologybusinessEnergy harvestingEnergy (signal processing)IEEE Transactions on Industry Applications
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Optimized design of high power density EMI filters for power electronic converters

2016

Nowadays, power density of power converters and related EMI filters is gaining more and more attention. This severely impacts on the design constraints in several application domains. A conventional design of the EMI filter does not guarantee the selection of components/configuration leading to the best power density. For this reason, an optimized design procedure of discrete EMI filters in terms of power density is proposed in this paper. It is based on a previously developed rule-based design procedure, introducing here additional features to obtain a more effective optimization of EMI filter's power density. The proposed approach has been validated in terms of EMI filter's performance an…

EngineeringSwitched-mode power supplyEnergy Engineering and Power Technology02 engineering and technology01 natural sciencesElectromagnetic interferenceEMI filter designEMI0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectronic engineeringOptical filterPower density010302 applied physicsPower convertersElectrical DrivesRenewable Energy Sustainability and the Environmentbusiness.industryMathematics::History and Overview020208 electrical & electronic engineeringElectrical engineeringElectrical DrivePower converterConvertersPower densityPower (physics)Settore ING-IND/31 - ElettrotecnicaComputer Networks and CommunicationHardware and ArchitectureFilter (video)business2016 AEIT International Annual Conference (AEIT)
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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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Experimental characterization of a wind generator prototype for sustainable small wind farms

2016

This paper presents the experimental characterization of a wind turbine prototype used for micro wind farms. The proposed prototype, whose advantages can be summarized in versatility of application, low noise and compactness, can generate 1 kW of rated power for a wind speed equal to 4 m/s. The tests here reported and carried out by means of an experimental test bench confirm that the prototype is well designed and adequate for the purpose of its application.

EngineeringTest benchWind generatorMechanical engineeringEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciMicro wind turbineTurbineAutomotive engineeringWind speedWind farm0203 mechanical engineering0202 electrical engineering electronic engineering information engineeringPMSMbusiness.industryRenewable Energy Sustainability and the EnvironmentExperimental characterization020208 electrical & electronic engineering020302 automobile design & engineeringCharacterization (materials science)Low noiseSettore ING-IND/31 - ElettrotecnicaPower ratingbusinessSettore ING-INF/07 - Misure Elettriche E Elettroniche
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Eletric vehicles impact using renewable energy

2015

In this moment, the principle topics for the modern world are the reduction of environmental pollution and the production of energy from renewable sources (for example photovoltaic system, wind farm, hydroelectric plants, etc.). This particular attention is determined by different reasons, in particular from the Kyoto Protocol, and from different problems as greenhouse effect, acid rain and climate change. The scope of this work is to study, for different years (1997-2013) in Italy, the production of electric energy from renewable and non-renewable. At a later stage, the attention will be on the consumption of the electric energy divided for different sectors. In particular, we study the po…

EngineeringVehicles feetElectric vehiclesEnergy Engineering and Power TechnologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciWind farmEnergy developmentvehicles fleetIntermittent energy sourceRenewable EnergyElectrical and Electronic EngineeringElectric vehicles; Green energy; Vehicles feet; Wind farm; Renewable Energy Sustainability and the Environment; Automotive Engineering; Energy Engineering and Power Technology; Electrical and Electronic EngineeringPumped-storage hydroelectricityZero-energy buildingWind powerWaste managementSustainability and the Environmentbusiness.industryGreen energyEnvironmental engineeringelectric vehicleEnvironmental impact of the energy industryRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaAutomotive EngineeringbusinessEfficient energy use
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