Search results for "elettrici"

showing 10 items of 959 documents

Control and design for efficiency improvement of permanent-magnet synchronous motor drives in household appliances

2011

This paper deals with some aspects of efficiency improvement of PMSMD (Permanent Magnet Synchronous Motor Drives). Particularly two aspects are focused: the control algorithm for the PMSMD, which allows to reduce the power losses of the electric drive without penalty on its dynamic performances and the optimization of an IPMSM (Interior Permanent Magnet Synchronous Motor) rotor configuration capable to increase the performances in terms of shaft torque production, limiting at the same time the rotor leakage flux. The loss minimization algorithm is here briefly analyzed, a test bed for experimental validation is presented and the data are analyzed. Experimental tests have been performed aimi…

Efficiency improvement permanent magnet machines and drives finite element analysis.Settore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici
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Replacement of Vehicle Fleet with EVs Using PV Energy

2016

The diffusion of Electric Vehicles (EVs), the reduction of environmental pollution and the production of energy from renewable sources (RES), in particular photovoltaic system, wind farm, hydroelectric plants, bioenergy and geothermal plants are the principal aspects discussed in the world. For this reason, the goal of this work is to study for 2014 year in all Italy's Regions; the energy production obtained to photovoltaic systems (PV) and the possibility to use with different percentage this energy for recharge the electric vehicles. In particular, they have been considered different scenarios in function to the km travelled per year from the population. This paper examines the integratio…

Electric VehicleSettore ING-IND/31 - ElettrotecnicaElectric Vehicles; Green energy; Photovoltaic system; Vehicles fleet; Renewable Energy Sustainability and the Environment; Energy Engineering and Power TechnologySustainability and the EnvironmentGreen energyEnergy Engineering and Power TechnologyElectric Vehicles; photovoltaic system; green Energy; vehicles fleet.Renewable EnergySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciElectric VehiclesPhotovoltaic systemVehicles fleet
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Experimental characterization of a proton exchange membrane fuel-cell for hybrid electric pedal assisted cycles

2017

This paper presents a feasibility study on the prototyping of a hybrid EPAC (Electric Pedal Assisted Cycle) Through an FC-B-UC (Fuel Cell - Battery - Ultra-Capacitors) power system. Aim of this work is the characterization of a PEMFC (Proton Exchange Membrane Fuel Cell) in order to confirm its theoretical performances and to verify the possibility of its installation on an e-bike.

Electric bikeSettore ING-INF/04 - AutomaticaPedal Assisted CycleFuel cellHybrid power systemSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici
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Experimental Validation of a Novel Method for Harmonic Mitigation for a Three-Phase Five-Level Cascaded H-Bridges Inverter

2019

In modern high-power electrical drives, the efficiency of the system is a crucial constraint. Moreover, the efficiency of power converters plays a fundamental role in modern applications requiring also a limited weight, such as the electric vehicles and novel more electric aircraft. The reduction of losses pushes for systems with a dc bus and a high number of dc/ac converters, widespread in the vehicle, not burdened by a too expensive data processing system. The purpose of this article is to concur to reduce losses by proposing an innovative selective harmonic mitigation method based on the identification of the working areas where the reference harmonics present lower amplitudes. In partic…

Electric machineCascade systemsfield-programmable gate arraysinvertersmultilevel systemspower conversion harmonicsbusiness.product_categoryComputer science020208 electrical & electronic engineering02 engineering and technologyConvertersSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaIndustrial and Manufacturing EngineeringDC-BUSHarmonic analysisNonlinear systemSettore ING-IND/31 - ElettrotecnicaThree-phaseControl and Systems EngineeringHarmonics0202 electrical engineering electronic engineering information engineeringElectronic engineeringInverter020201 artificial intelligence & image processingElectrical and Electronic Engineeringbusiness
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A dq axis theory of the magnetic, thermal, and mechanical properties of Curie motor

2011

A dq axis theory of a thermomagnetic Curie motor is presented. This theory allows one to estimate the performances of a Curie motor from its geometrical, magnetic, and thermal properties. The proposed approach shows that the thermomagnetic Curie motor is equivalent from a magnetic point of view to a dc electric machine. The physical meaning of the parameters used in the dq theory of Curie motor is explicated. The theory is validated by using experimental data.

Electric machineElectric motorbusiness.product_categoryCondensed matter physicsChemistryGeneral Physics and AstronomyThermomagnetic convectionSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciQuantitative Biology::Subcellular ProcessesCondensed Matter::Materials ScienceNuclear magnetic resonanceThermalCurieCondensed Matter::Strongly Correlated Electronsbusinesselectric motors magnetic devices
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D-Q axis theory of thermomagnetic Curie motor

2010

This paper presents a the d-q axis theory of a thermomagnetic Curie motor. From this theory a maximization procedure of the performances of Curie motor has been developed. The proposed approach has shown that the thermomagnetic Curie motor is equivalent from a magnetic point of view to a d.c. electric machine. Consequently, a design of a Curie motor has been proposed and the calculated performances show a significant improvement in comparison to the performances reported in literature.

Electric machinePhysicsElectric motorbusiness.product_categoryCondensed matter physicsThermomagnetic convectionSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciMagnetic fluxSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaFerromagnetismCurieCurie temperatureElectric Machines Power Systems Electrical TechnologybusinessThe XIX International Conference on Electrical Machines - ICEM 2010
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Comparison between 3-ph and 6-ph PMSM drives for the electric propulsion of unmanned aerial vehicles

2021

The full electric aircraft concept requires accurate design and suitable choice and integration of all the used components. Obviously, the electric propulsion drive is one of the most important on-board equipment. Both power converters and electric motors must have low weight, suitable overload capacity and high reliability. In this paper, two possible solutions of electric propulsion motor for unmanned aerial vehicle are investigated. Sizes, weight and some features of a three-phase PMSM motor are compared to those of a six-phase motor obtained by an appropriate rewinding of the armature, with fixed stator and rotor magnetic circuits. The losses obtained from the numerical analyzes are com…

Electric motorComputer scienceStatorRotor (electric)Settore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciAutomotive engineeringAll electric aircraft Multi-phase motor Permanent magnet motor UAV propulsionlaw.inventionMagnetic circuitElectrically powered spacecraft propulsionlawPower electronicsPower engineeringArmature (electrical engineering)
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Enhanced flexible algorithm for the optimization of slot filling factors in electrical machines †

2020

The continuous development in the field of industrial automation and electric mobility has led to the need for more efficient electrical machines with a high power density. The improvement of electrical machines’ slot filling factors is one of the measures to satisfy these requirements. In recent years, this topic has aroused greater interest in the industrial sector, since the evolution of the winding technological manufacturing processes allows an economically sustainable realization of ordered winding arrangements, rather than random ones. Moreover, the manufacture of electrical machines’ windings must be preceded by an accurate design phase in which it is possible to evaluate the maximu…

Electric motorControl and OptimizationComputer scienceEnergy Engineering and Power TechnologyFilling factor optimizationMagnetic wiresSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilcsh:TechnologyField (computer science)WindingsHardware_GENERALElectrical motorElectronic engineeringElectrical and Electronic EngineeringEngineering (miscellaneous)Power densityFlexibility (engineering)Electrical motorsIdeal (set theory)Optimization algorithmelectrical motors; sot filling factor; optimization algorithm; windings; magnetic wire; filling factor optimizationElectrical motors; Filling factor optimization; Magnetic wire; Optimization algorithm; Sot filling factor; WindingsRenewable Energy Sustainability and the EnvironmentFilling factorbusiness.industrylcsh:TAutomationOptimization algorithmMagnetic wireElectromagnetic coilelectrical_electronic_engineeringSot filling factorbusinessRealization (systems)AlgorithmEnergy (miscellaneous)
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A model of a linear synchronous motor based on distribution theory

2012

The fundamental idea of this paper is to use the distribution theory to analyze linear machines in order to include in the mathematical model both ideal and non ideal features. This paper shows how distribution theory can be used to establish a mathematical model able to describe both the ordinary working condition of a Linear Synchronous Motor (LSM) as well the role of the unavoidable irregularities and non ideal features.

Electric motorIdeal (set theory)Distribution (number theory)Control theoryComputer sciencelinear synchronous motorsGeneral Physics and AstronomyOrder (ring theory)Linear motorSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciWorking condition
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A software for the evaluation of winding factor harmonic distribution in high efficiency electrical motors and generators

2013

In this paper a software developed for the determination of winding connections, the calculation of winding factors and the evaluation of their harmonic distribution of three and two phase windings is presented by using as input data simply the number of slots, pole pairs and phases. The software is implemented as a function in MATLAB environment. By means of some examples, covering the most relevant winding types, the capabilities of this software will be shown. Particularly, integer and fractional single and double layer winding can be treated. Some examples are presented and briefly discussed. The connections, the winding factor harmonic distribution, the electro-motive force (e.m.f) THD…

Electric motorLeakage inductanceTotal harmonic distortionEngineeringbusiness.industryAstrophysics::High Energy Astrophysical PhenomenaElectric generatorwinding winding factor winding connections harmonicsSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTopologylaw.inventionSoftwarelawElectromagnetic coilPhysics::Space PhysicsElectronic engineeringWinding factorbusinessPhysics::Atmospheric and Oceanic PhysicsHarmonic distribution2013 Eighth International Conference and Exhibition on Ecological Vehicles and Renewable Energies (EVER)
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