Search results for "Tracking"

showing 10 items of 709 documents

A new modified Inc-Cond MPPT technique and its testing in a whole PV simulator under PSC

2015

In this paper a new modified Inc-Cond MPPT technique able to lead PV plants to work in the real MPP (Maximum Power Point) under PSC (Partial Shading Condition) is proposed. The new Inc-Cond MPPT technique working principle is fully explained, discussed and then successfully tested in a whole and reliable PV simulator conceived and set-up by the Authors in order to test and compare several new MPPT algorithms. The simulation results show that the proposed Inc-Cond MPPT technique is able to successfully lead the PV plant to work in the real MPP both in the cases of instantaneous and gradual changing of shading and of temperature conditions.

EngineeringMaximum power principlebusiness.industryPhotovoltaic power systemSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciMaximum power point trackingMaximum power point trackingPower optimizerPower system simulationControl theoryIncremental conductanceGrid-connected photovoltaic power systemPower system simulationPv plantElectrical and Electronic EngineeringbusinessSimulation
researchProduct

Trajectory tracking of underactuated underwater vehicles

2003

This paper deals with a control strategies for underactuated underwater vehicles whose target is the tracking of a space trajectory. A cascade control strategy is employed which brings to a control law consisting of: 1) a kinematic control law, derived from the vehicle kinematic model, which forces this model to track the reference trajectory; and 2) a dynamic control law which forces the system to track the reference signals given by the kinematic control law. Conditions for asymptotic tracking of the trajectory are given with reference to the standard dynamical model of the above vehicle. An observer of the marine current is also added in order to process the control law. Simulation tests…

EngineeringObserver (quantum physics)business.industryUnderactuationnavigation systemsProcess (computing)Control engineeringKinematicsTracking (particle physics)Pipeline surveyingComputer Science::RoboticsSettore ING-INF/04 - AutomaticaTrajectory trackingControl theoryCascadeTrajectoryUnderactuated underwater vehicleUnderwaterbusinessProceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228)
researchProduct

Technical and economical evaluation on the use of reconfiguration systems in some EU countries for PV plants

2017

This paper shows the technical and economical evaluation of the application of a reconfiguration system for photovoltaic (PV) plants, considering the incentives system in some European Union countries. The reconfiguration system is an alternative to the distributed maximum power point tracking technique which used to increase the power production in the PV plants under the mismatch phenomenon. The reconfiguration techniques employ a microprocessor-based or field-programmable gate array-based system that modifies the layout of the PV plant through the change of the connections among modules. After having presented the main features working of the PV reconfiguration system allowing the improv…

EngineeringPartial shading (PS)020209 energy02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciIndustrial and Manufacturing EngineeringMaximum power point trackingGate arrayIncentives policie0202 electrical engineering electronic engineering information engineeringProduction (economics)media_common.cataloged_instancePV system topologyElectrical and Electronic EngineeringEuropean unionPhotovoltaic (PV) power systemmedia_commonMismatch lossebusiness.industryMismatch conditionPhotovoltaic systemControl reconfigurationControl engineeringInvestment (macroeconomics)Reliability engineeringSettore ING-IND/31 - ElettrotecnicaIncentiveControl and Systems EngineeringReconstructionbusinessSettore ING-INF/07 - Misure Elettriche E Elettroniche
researchProduct

Residence time distribution of solid particles in a continuous, high-aspect-ratio multiple-impeller stirred vessel

2004

Abstract In this paper experimental information on the retention time distribution (RTD) of solid particles in a high-aspect-ratio vessel, stirred by three equally spaced Rushton turbines, is presented. The relevant data were obtained by a special technique named twin system approach (TSA) that greatly simplifies the handling of particle-laden streams and is therefore particularly suited for investigating particle RTD in flow systems. The technique fundamentals are first summarized, together with the data analysis procedure. This lastly requires a numerical deconvolution operation that is easily performed with the help of Z -transforms. Two different approaches for excluding the spurious co…

EngineeringPipingbusiness.industryApplied MathematicsGeneral Chemical EngineeringSettore ING-IND/25 - Impianti ChimiciFlow modelGeneral ChemistryMechanicsResidence time distributionMultiple-impellerIndustrial and Manufacturing EngineeringParticle tracingImpellerTwin systems approachParticle RTDCascadeParticle tracking velocimetryRetention time distributionParticleStirred vesselDeconvolutionbusinessSimulationBackflow
researchProduct

New Power Conditioning System for Battery-free Satellite Buses with Maximum Power Point Tracking

2007

The purpose of this paper is describe a new conception of Power Conditioning Unit (PCU) developed to fulfill the requirements of BepiColombo Electronic Propulsion module. This load bus has very tough specification especially regarding transient response during total load switch-off ("beam out") which has to be less than 2% of the bus voltage. The conception we propose, is the new Sequential Switching Shunt Maximum Power Regulator (S3MPR) consisting in a S3R, to keep the SA voltage at its Maximum Power Point (MPP) followed by a Boost regulator to produce a constant 100V to supply the Electronic Propulsion (EP). This concept may also be of interest for other future missions involving high pow…

EngineeringPower ratingSwitched-mode power supplybusiness.industryElectrical engineeringPower factorPower-flow studyPower supply unitVoltage optimisationbusinessMaximum power point trackingConstant power circuitAPEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition
researchProduct

Economic benefits of the use of a PV plants reconfiguration systems

2015

This paper shows the economic convenience of the application of a reconfiguration system for photovoltaic plants, considering the incentives system in different Countries. The reconfiguration is an alternative to the Distributed Maximum Power Point Tracking, DMPPT, technique used to overcome the mismatch problem in Photovoltaic, PV, plants. The reconfiguration techniques employ a microprocessor-based system that modifies the layout of the PV plant by physically changing the connections among modules. After having presented the working principle of the PV reconfiguration system allowing the improvement of the efficiency of the same plant and the relevant installation, the main strength and w…

EngineeringRelation (database)business.industryPhotovoltaic systemControl reconfigurationSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciEnvironmental economicsInvestment (macroeconomics)Economic benefitsMaximum power point trackingSettore ING-IND/31 - ElettrotecnicaIncentivePv plantReconfiguration photovoltaic incentives policiesbusinessSettore ING-INF/07 - Misure Elettriche E Elettroniche2015 International Conference on Renewable Energy Research and Applications (ICRERA)
researchProduct

Development details and performance assessment of a Wind Turbine Emulator

2016

This paper describes an experimental platform to emulate the static and dynamic behavior of real Wind Energy Conversion Systems (WECS). The Wind Turbine Emulator (WTE) consists of two coupled 1.5 kW squirrel-cage induction machines. The WTE calculations are performed on a PC and a DSP, both connected via USB. The total torque applied to the WTE motor is the difference of the scaled wind mechanical torque calculated on the PC, and the turbine inertia torque calculated on the DSP. An improved WTE shaft speed derivative has been used for the inertia torque calculation, which provides better results in terms of attenuation of the high-frequency harmonics present in the generator speed acquisiti…

EngineeringRenewable Energy Sustainability and the Environmentbusiness.industry020209 energymedia_common.quotation_subjectControl engineering02 engineering and technologyUSBInertiaTurbineAutomotive engineeringMaximum power point trackinglaw.inventionGenerator (circuit theory)lawHarmonics0202 electrical engineering electronic engineering information engineeringTorqueLow voltage ride throughbusinessmedia_commonRenewable Energy
researchProduct

A simple and accurate model of photovoltaic modules for power system design

2014

EngineeringSIMPLE (military communications protocol)business.industryPhotovoltaic systemphotovoltaic arraysolar energyElectrical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPower system designMaximum power point trackingSolar micro-invertermodeling and simulationElectronic engineeringGrid-connected photovoltaic power systemrenewable energy sourcebusinessRooftop photovoltaic power station2014 Ninth International Conference on Ecological Vehicles and Renewable Energies (EVER)
researchProduct

Keeping Track of Samples in Multidisciplinary Fieldwork

2021

We here present methods, tools and results for efficiently collecting metadata and tracking samples collected in the field. The samples and metadata were collected during scientific cruises conducted by amongst others marine biologists, oceanographers, geochemists and marine geologists in the Nansen Legacy project. It is here reported on the successful development and implementation of a system for labeling, tracking and openly publishing metadata from the cruises. The results and tools have been made openly available, as they are suitable for a range of situations, from the individual scientist working in the field to large research missions.

EngineeringScience (General)business.industryData managementmetadatadata managmentData management marine sciencesVDP::Matematikk og Naturvitenskap: 400Data managment; Sample tracking; Metadata; Darwin Core; CF Standard NamesTrack (rail transport)sample trackingData scienceComputer Science ApplicationsMetadataQ1-390cf standard namesMultidisciplinary approachdarwin coreComputer Science (miscellaneous)Sample trackingDarwin CorebusinessData Science Journal
researchProduct

Review on photovoltaic based active generator

2015

An active generator has the capacity to support frequency control and instantaneous power balance. The grid operator adjusts the power dispatch of generators according to power demand fluctuations. Photovoltaic (PV) based active generators can be used as load following generators in the same manner as other power dispatch generators. This new type of distribution system, based on active generator(s), needs new innovative management and operation strategies for increasing the penetration of intermittent renewable energy systems. The considered PV based active generator has three units, i.e., PV array, battery storage and super capacitor. In this review paper, the management and operation app…

EngineeringSmart gridbusiness.industryAutomatic frequency controlPhotovoltaic systemLoad following power plantElectronic engineeringGrid-connected photovoltaic power systemMicrogridbusinessRooftop photovoltaic power stationAutomotive engineeringMaximum power point tracking2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)
researchProduct