Search results for " Electrical and Electronic Engineering"

showing 10 items of 118 documents

Linear parameter‐varying modelling and control of an offshore wind turbine with constrained information

2014

This study deals with linear parameter-varying modelling and output-feedback H ∞ control design for an offshore wind turbine. The controller is designed with consideration that not all the information in the feedback loop will be used. This constraint is incorporated into the design procedure. Constrained information means that a special zero-non-zero pattern is forced upon the gain matrix. The constrained controller is obtained based on parameter-dependent Lyapunov functions and formulated in terms of linear-matrix inequalities. Since the functions are dependent on the wind speed and accurate wind speed measurements are rarely available in practice, an extended Kalman filter is used to est…

EngineeringOperating pointControl and OptimizationWind powerbusiness.industryBlade pitchOpen-loop controllerDrivetrainComputer Science Applications1707 Computer Vision and Pattern RecognitionControl engineeringControl and Systems Engineering; Human-Computer Interaction; Computer Science Applications1707 Computer Vision and Pattern Recognition; Control and Optimization; Electrical and Electronic EngineeringWind speedComputer Science ApplicationsHuman-Computer InteractionOffshore wind powerControl and Systems EngineeringControl theoryElectrical and Electronic EngineeringbusinessLPV modeling constrained information H1 control wind turbine.IET Control Theory & Applications
researchProduct

Vibration control for adjacent structures using local state information

2014

In this paper, a novel strategy for structural vibration control of multi-structure systems is presented. This strategy pays particular attention to mitigating negative interstructure interactions. Moreover, it is based on recent advances in static output–feedback control, which make possible the efficient computation of decentralized velocity-feedback controllers by solving a single-step optimization problem with Linear Matrix Inequality constraints. To illustrate the main ideas, a local velocity-feedback energy-to-peak controller is designed for the seismic protection of a two-building system. This controller is remarkably effective and extremely simple. Moreover, it can also be implement…

EngineeringOptimization problem:Informàtica::Automàtica i control [Àrees temàtiques de la UPC]Static output-feedbackComputationControl (management)Vibration controlEdificis -- Vibració:Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC]Feedback control systemsDamperStructural vibration controlControl d'estructures (Enginyeria)Control theorySimple (abstract algebra)Buildings -- VibrationElectrical and Electronic EngineeringMulti-structure systemsbusiness.industryMechanical EngineeringLinear matrix inequalityPassive damping designComputer Science Applications1707 Computer Vision and Pattern RecognitionControl engineeringComputer Science ApplicationsMulti-structure systems; Passive damping design; Static output-feedback; Structural vibration control; Mechanical Engineering; Electrical and Electronic Engineering; Computer Science Applications1707 Computer Vision and Pattern RecognitionControl and Systems EngineeringSistemes de control per retroaccióBuildings--VibrationStructural control (Engineering)business
researchProduct

A novel current-based approach for very low variation detection of resistive sensors in wheatstone bridge configuration

2014

EngineeringResistive sensorsWheatstone bridgelaw.inventionlawElectronic engineeringCurrent conveyorHigh resolutionElectrical and Electronic EngineeringLinear responseHigh sensitivityWheatstone bridgeHigh accuracybusiness.industryOffset compensationElectrical engineeringAD844; Bridge balancing; Current conveyor; Current-mode circuit; High accuracy; High resolution; High sensitivity; Linear response; Offset compensation; Resistive sensor detection; Small resistive variation; Wheatstone bridge; Electrical and Electronic EngineeringSmall resistive variationAD844Variation (linguistics)Current-mode circuitKelvin bridgeResistive sensor detectionCurrent (fluid)businessBridge balancing
researchProduct

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
researchProduct

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)
researchProduct

Journeys from quantum optics to quantum technology

2017

Sir Peter Knight is a pioneer in quantum optics which has now grown to an important branch of modern physics to study the foundations and applications of quantum physics. He is leading an effort to develop new technologies from quantum mechanics. In this collection of essays, we recall the time we were working with him as a postdoc or a PhD student and look at how the time with him has influenced our research.

EngineeringTechnologyAtomic and Molecular Physics and OpticEmerging technologiesQuantum technologiesTRAPPED IONQuantum physicsSINGLE-ATOM0205 Optical PhysicsPhysics - History and Philosophy of PhysicsNONCLASSICAL MOTIONAL STATESFOS: Physical sciences01 natural sciences010305 fluids & plasmasTheoretical physicsQC350Engineering0202 Atomic Molecular Nuclear Particle And Plasma Physics0103 physical sciencesPERIODIC LEVEL-CROSSINGSStatistical and Nonlinear Physics; Electronic Optical and Magnetic Materials; Atomic and Molecular Physics and Optics; Electrical and Electronic EngineeringHistory and Philosophy of Physics (physics.hist-ph)ULTRAFAST MOLECULAR-DYNAMICSElectrical and Electronic Engineering010306 general physicsQCQuantum opticsScience & Technologybusiness.industryElectronic Optical and Magnetic MaterialModern physics0906 Electrical And Electronic EngineeringINDUCED ELECTRON-DIFFRACTIONStatistical and Nonlinear PhysicsEngineering Electrical & ElectronicOpticsModern physicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsQuantum technologyQuantum theoryINDUCED CONTINUUM STRUCTUREHIGH-HARMONIC-GENERATIONENTANGLED COHERENT STATESQuantum Physics (quant-ph)businessBAND SQUEEZED VACUUMStatistical and Nonlinear Physic
researchProduct

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
researchProduct

Sensorless small wind turbine with a sliding-mode observer for water heating applications

2015

Water heating applications consume a considerable portion of electricity demand in most of countries. Small wind turbines are one of attractive alternatives for grid electricity based water heating systems. Wind energy can be converted to heat energy in a high efficient manner. However it is essential that wind turbine based water heating systems should be economical and reliable. Maximum power point tracking algorithm of most of available wind turbines requires information from a wind speed sensor and a rotor speed sensor which reduces the reliability of the system. In this paper, the proposed 5 kW wind turbine does not require external wind speed sensors and rotor speed sensors. The syste…

EngineeringWind powerSmall wind turbineWind turbine controlWater heating systembusiness.industrySensorless controlTurbineWind speedMaximum power point trackingIndustrial and Manufacturing EngineeringPower (physics)Power optimizerStand-alone power systemControl theorySensorless control; Sliding-mode observer; Water heating system; Wind turbine control; Electrical and Electronic Engineering; Industrial and Manufacturing EngineeringElectrical and Electronic EngineeringbusinessSliding-mode observer
researchProduct

Data-driven design of robust fault detection system for wind turbines

2014

Abstract In this paper, a robust data-driven fault detection approach is proposed with application to a wind turbine benchmark. The main challenges of the wind turbine fault detection lie in its nonlinearity, unknown disturbances as well as significant measurement noise. To overcome these difficulties, a data-driven fault detection scheme is proposed with robust residual generators directly constructed from available process data. A performance index and an optimization criterion are proposed to achieve the robustness of the residual signals related to the disturbances. For the residual evaluation, a proper evaluation approach as well as a suitable decision logic is given to make a correct …

EngineeringWind powerbusiness.industryMechanical EngineeringControl engineeringComputer Science Applications1707 Computer Vision and Pattern RecognitionResidualData-drivenTurbineFault detection and isolationComputer Science ApplicationsData-drivenNonlinear systemOptimization criterionPerformance indexControl and Systems EngineeringRobustness (computer science)Control theoryElectrical and Electronic EngineeringbusinessDecision tableRobustnessFault detectionWind turbineData-driven; Fault detection; Optimization criterion; Performance index; Robustness; Wind turbine; Mechanical Engineering; Computer Science Applications1707 Computer Vision and Pattern Recognition; Electrical and Electronic Engineering
researchProduct

A comparison of two innovative customer power devices for Smart Micro-Grids

2015

The paper presents a comparison of two prototypes of innovative Customer Power Devices designed for applications in Smart Micro-Grids. The devices are both equipped with Energy Storage Systems, consisting in Lithium batteries and have been assembled, independently, by the DIAEE of the University of Rome 'La Sapienza' and the DEIM of the University of Palermo in collaboration with the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA). In the paper, the characteristics and the operating modes of the devices are examined and some consideration on their application in Low Voltage Smart Micro-Grids are provided. © 2015 IEEE.

Engineeringbusiness.industryEmerging technologiesElectrical engineeringEnergy Engineering and Power TechnologyDistributed GenerationEnergy StorageSmart GridsEnergy storageSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSmart griddistributed generation; energy storage; LI-ION batteries; smart grids; electrical and electronic engineering; energy engineering and power technologyDistributed generationAgency (sociology)Li-Ion BatterieLi-Ion BatteriesPower semiconductor deviceElectrical and Electronic EngineeringSmart GridSmart Grids;Li-Ion Batteries;Energy Storage;Distributed GenerationbusinessLow voltage2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC)
researchProduct