Search results for "Tito"

showing 10 items of 719 documents

Experimental investigation on different rainfall energy harvesting structures

2018

In this paper proposes an experimental comparison between different rainfall harvesting devices and the study of the corresponding electrical rectifying circuit. More in detail, three harvesting structures are considered: the cantilever, the bridge and the floating circle. For each of the proposed structure, different waveforms have been acquired and discussed. The processed data have been compared in order to suggest the best choice for the rectifying circuit, from the simplest one to the most endorsed in the technical literature.

010302 applied physicsCantileverComputer scienceRenewable Energy Sustainability and the EnvironmentRainfall energy harvester02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici021001 nanoscience & nanotechnology01 natural sciencesTechnical literatureBridge (nautical)Settore ING-IND/31 - ElettrotecnicaTransducer0103 physical sciencesAutomotive EngineeringElectronic engineeringWaveform0210 nano-technologyEnergy harvestingPiezoelectric effectHardware_LOGICDESIGN
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A General Mathematical Formulation for the Determination of Differential Leakage Factors in Electrical Machines with Symmetrical and Asymmetrical Ful…

2018

This paper presents a simple and general mathematical formulation for the determination of the differential leakage factor for both symmetrical and asymmetrical full and dead-coil windings of electrical machines. The method can be applied to all multiphase windings and considers Gorges polygons in conjunction with masses geometry in order to find an easy and affordable way to compute the differential leakage factor, avoiding the adoption of traditional methods that refer to the Ossanna's infinite series, which has to be obviously truncated under the bound of a predetermined accuracy. Moreover, the method described in this paper allows the easy determination of both the minimum and maximum v…

010302 applied physicsComputer scienceconcentrated winding020208 electrical & electronic engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTopology01 natural sciencesdifferential leakage factorIndustrial and Manufacturing EngineeringHarmonic analysismoment of inertiaControl and Systems EngineeringElectromagnetic coil0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringAsymmetrical windingdead-coil windingGörges polygonmultiphase windingsLeakage (electronics)
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Determination of differential leakage factors in electrical machines with non-symmetrical full and dead-coil windings

2017

In this paper Gorges polygons are used in conjunction with masses geometry to find an easy and affordable way to compute the differential leakage factor of non symmetrical full and dead coil winding. By following the traditional way, the use of the Ossanna's infinite series which has to be obviously truncated under the bound of a predetermined accuracy is mandatory. In the presented method no infinite series is instead required. An example is then shown and discussed to demonstrate practically the effectiveness of the proposed method.

010302 applied physicsConcentrated windingSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesDifferential leakage factorwindingsmoment of inertiaControl theoryElectromagnetic coil0103 physical sciencesunsymmetrical windingGörges polygonLeakage (electronics)Mathematics
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Maximum Torque Per Ampere control algorithm for low saliency ratio interior permanent magnet synchronous motors

2017

This paper presents an investigation on the comparison between the Maximum Torque Per Ampere (MTPA) and the Field Orientation Control (FOC) algorithms for interior permanent magnet synchronous machines (IPMSMs). In particular, this study was carried out on a small-power IPMSM with low salience ratio. Both control algorithms have been implemented in the Matlab/Simulink environment, obtaining promising results.

010302 applied physicsControl algorithmMaximum torque per ampere control algorithmPermanent magnet synchronous motorComputer scienceRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesField oriented control algorithmField orientationSalience (neuroscience)Control theoryMagnet0103 physical sciences0202 electrical engineering electronic engineering information engineeringInterior permanent magnet synchronous machineMATLABAmperecomputerMaximum torquecomputer.programming_language
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An exact method for the determination of differential leakage factors in electrical machines with non-symmetrical windings

2016

An exact and simple method for the determination of differential leakage factors in polyphase ac electrical machines with non-symmetrical windings is presented in this paper. The method relies on the properties of Gorges polygons that are used to transform an infinite series expressing the differential leakage factor into a finite sum in order to significantly simplify the calculations. Some examples are shown and discussed in order to practically demonstrate the effectiveness of the proposed method.

010302 applied physicsElectronic Optical and Magnetic Material020208 electrical & electronic engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTopology01 natural sciencesElectronic mailElectronic Optical and Magnetic MaterialsDifferential leakage factorHarmonic analysiswindingDistribution functionmoment of inertiaElectromagnetic coil0103 physical sciences0202 electrical engineering electronic engineering information engineeringPolyphase systemGraphical modelnon-symmetrical windingElectrical and Electronic EngineeringGörges polygonLeakage (electronics)Mathematics
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A Magnetohydrodynamic Auxiliary Propulsion system for docking assistance of autonomous vehicle

2016

In this article we present an approach to the description of Magnetohydrodynamic Auxiliary Propulsion system for docking assistance of autonomous vehicle. Preliminarily, an analytical model which includes an electromagnetic model and a thermal model is presented. Successively, in order to move beyond the analytical model, a 3-D MHD modeling tool and a Runge Kutta method based solver are presented and they are used to investigate an alternative MHD solutions. Some numerical analysis are given

010302 applied physicsEngineeringbusiness.industryNumerical analysis05 social sciencesControl engineeringOcean EngineeringSolverPropulsionSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciOceanography01 natural sciencesRunge–Kutta methodsMagnetohydrodinamic Propulsion SystemSettore ING-INF/04 - AutomaticaPhysics::Space Physics0502 economics and business0103 physical sciencesMagnetohydrodynamic driveElectromagnetic modelMagnetohydrodynamicsThermal modelbusinessInstrumentation050203 business & management
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The helicoidal magnetic generator

2016

Recently helicoidal generator for the exploitation of sea wave energy has been proposed. This device can convert both the vertical and rotational movement of seawaves. The electrical energy generated by such a device must be converted and conditioned in order to match the instantaneous utility requirements and a power link from the sea to an interconnection is needed. In this paper, the authors propose a mathematical model of this device and preliminarily present a prototype of the machine.

010302 applied physicsInterconnectionEngineeringbusiness.industryLinear asynchronous generatorElectric potential energy05 social sciencesElectrical engineeringOcean EngineeringPermanent magnet synchronous generatorElectric machineSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciInductorOceanography01 natural sciencesPower (physics)Generator (circuit theory)Electromagnetic coil0502 economics and business0103 physical sciencesbusinessInstrumentation050203 business & managementEnergy (signal processing)Sea waves energy
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Contributed Review: Review of thermal methods for space charge measurement.

2016

The space charge accumulation phenomenon has garnered great interest over the last two decades because of the increased use of direct current in high voltage electrical systems. In this context, a significant relevance has been achieved by the thermal methods, used for solid dielectrics. This paper presents a review of this non-destructive measurement system used for the measurement of space charge. The thermal pulse method, the thermal step method, and the laser intensity modulation method are described. For each configuration, the principle of operation, the thicknesses analyzed, and the spatial resolution are described, reporting also the main related applications

010302 applied physicsMaterials science020209 energySystem of measurementDirect currentContext (language use)High voltage02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesEngineering physicsSpace chargeSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaModulation0103 physical sciencesThermal0202 electrical engineering electronic engineering information engineeringInstrumentationIntensity modulationthermal methods space charge measurementThe Review of scientific instruments
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OPTIMIZATION OF A NOVEL MAGNETO-RHEOLOGICAL DEVICE WITH PERMANENT MAGNETS

2017

In this paper a novel evolutionary algorithm is used for the optimization of the performance of a magnetorheological (MR) device, capable to transmit torque between two shafts and powered by a system of Permanent Magnets (PMs). The stochastic, evolutionary, global optimization algorithm is based on a modified version of the self-organizing map. It uses a dedicated simplified analytical model of the device, developed in order to obtain a fast and accurate evaluation of the torque. Then, by means this model, the cost function to find the optimal parameters of the device is defined. Once the optimal parameters are identified, the performance of the proposed device is simulated by means of a FE…

010302 applied physicsMaterials scienceElectronic Optical and Magnetic Material02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesElectronic Optical and Magnetic MaterialsMagneto rheologicalMagnet0103 physical sciencesComposite material0210 nano-technologyProgress In Electromagnetics Research M
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Measuring rain energy with the employment of “Arduino”

2016

This paper presents the performances of rainfall energy harvesting through the use of a piezoelectric transducer and an Arduino-based measuring system. Diverse studies agree on the possibility of generating electricity from rainfall, but to date, a study that can measure 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 — to measure the energy produced from a single raindrop — and concludes with an ad hoc Arduino-based measuring system, aimed at measuring the actual amount of electrical energy produced by a piezoelectric transducer that is exposed to r…

010302 applied physicsMeasure (data warehouse)EngineeringEnergy harvestingbusiness.industryElectric potential energyElectrical engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici021001 nanoscience & nanotechnologySettore ING-INF/01 - Elettronica01 natural sciencesSettore ING-IND/31 - ElettrotecnicaElectricity generationTransducerArduino0103 physical sciencesOscilloscope0210 nano-technologybusinessEnergy harvestingPiezoelectric sensorEnergy (signal processing)2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA)
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