Search results for " electronic engineering"

showing 10 items of 8284 documents

Modeling Stator Winding Inter-Turn Short Circuit Faults in PMSMs including Cross Effects

2020

Author's accepted manuscript. © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. This paper presents a detailed analysis of stator winding inter-turn Short Circuit (ITSC) faults, taking the cross effects in the three phases of a permanent magnet synchronous motor (PMSM) into account by considering insulation degradation resistances. A PMSM with series coils in eac…

010302 applied physicsComputer sciencebusiness.industryStator020208 electrical & electronic engineering02 engineering and technologyStructural engineeringFault (power engineering)01 natural sciencesFinite element methodVDP::Teknologi: 500::Elektrotekniske fag: 540law.inventionInductancelawElectromagnetic coil0103 physical sciencesTurn (geometry)0202 electrical engineering electronic engineering information engineeringbusinessSynchronous motorShort circuit
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Custom measurement system for memristor characterisation

2021

Abstract A cheap, compact and customisable characterisation system for memristor devices, working between ± 10 V, is presented. SPICE (Simulation Program with Integrated Circuit Emphasis) simulations are performed to verify the circuit feasibility and a proper software is developed to drive the system. The potentiality of the realised system is tested by performing several electrical measurements on both Cu/HfO2/Pt memristors and two-terminals commercial devices.

010302 applied physicsComputer sciencebusiness.industrySystem of measurementSpiceEmphasis (telecommunications)02 engineering and technologyMemristorIntegrated circuit021001 nanoscience & nanotechnologyCondensed Matter PhysicsSettore ING-INF/01 - Elettronica01 natural sciencesElectronic Optical and Magnetic Materialslaw.inventionSoftwarelaw0103 physical sciencesMaterials ChemistryElectronic engineeringElectrical measurementsElectrical and Electronic EngineeringMemristor ReRAM electrical characterization system current compliance endurance retention0210 nano-technologybusinessSolid-State Electronics
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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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Piecewise Affine (PWA) Modeling and Switched Damping Control of Two-Inertia Systems with Backlash

2018

Backlash degrades positioning accuracy and can induce mechanical wear and breakage by collisions. Therefore, a lot of studies have been conducted on backlash compensation. The simplest control method for the impact attenuation is torsional damping addition by feedback of torsional velocity. This paper reveals the advantages and disadvantages of the torsional damping addition. Based on the analyses, a novel switched damping control is proposed to realize the responses with smaller overshoot while attenuating the impact. The mechanical system and the proposed controller are described as piecewise affine systems for analyses. The performance of the proposed method is compared with a linear dam…

010302 applied physicsComputer sciencemedia_common.quotation_subjectAttenuation020208 electrical & electronic engineeringControl (management)02 engineering and technologyInertia01 natural sciencesCompensation (engineering)Mechanical systemControl theory0103 physical sciences0202 electrical engineering electronic engineering information engineeringOvershoot (signal)Backlashmedia_common
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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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Pulsed Electro-Acoustic Method for specimens and cables employed in HVDC systems: Some feasibility considerations

2018

Recent experiments on the use of the PEA method for testing dielectric materials in specimens and comparison with a detailed model provide an insight of the phenomenon and suggest the need of adopting similar models also for cables. What is said is even more important considering the possible future adoption of the PEA methodology to test DC cables for Pre-Qualification and Type Tests. The use of an accurate model of the PEA cell used for testing specimens and related experiments prove that the thickness of the different parts composing the PEA setup is a basic element for providing accurate charge reading and interpretation of the phenomenon. Both simulation and experimental results, carri…

010302 applied physicsControl and OptimizationComputer science020209 energySample (material)Issues in PEA measurementMechanical engineeringEnergy Engineering and Power Technology02 engineering and technologyAcoustic wave01 natural sciencesSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaPulsed Electro-Acoustic methodComputer Networks and Communication0103 physical sciencesReflection phenomenon0202 electrical engineering electronic engineering information engineeringDC cableCharge accumulation
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Guest Editorial

2019

Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART²

010302 applied physicsControl and Systems Engineering0103 physical sciencesMaterials ChemistryCeramics and Composites02 engineering and technologyElectrical and Electronic Engineering021001 nanoscience & nanotechnology0210 nano-technologyCondensed Matter Physics01 natural sciencesElectronic Optical and Magnetic MaterialsIntegrated Ferroelectrics
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Conic optical fiber probe for generation and characterization of microbubbles in liquids

2021

Abstract A novel optical fiber probe has been developed to provide mechanical stability to microbubbles generated in fluids, the tip of the fiber is etched with hydrofluoric acid to pierce a truncated horn that fastens the microbubbles to the fiber tip and prevents misalignment or detachment caused by convection currents, vibrations or shocks in the liquid. Microbubbles are photo-thermally generated on the etched fiber and used as Fabry-Perot cavity sensor. Two methods were used to interrogate the probe: the first one, in the wavelength domain, is suitable for calibration in static or quasi static situations; the second one, in the time domain, can be used in dynamic environments. Experimen…

010302 applied physicsConvectionMaterials sciencebusiness.industryMetals and Alloys02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsWavelengthOptics0103 physical sciencesMicrobubblesCalibrationFiberTime domainElectrical and Electronic Engineering0210 nano-technologybusinessInstrumentationQuasistatic processBar (unit)Sensors and Actuators A: Physical
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Flexible and efficient computer-aided design tool for advanced comb-line rectangular waveguide filters

2015

A very flexible and efficient computer-aided design CAD tool, specifically suited for advanced comb-line rectangular waveguide filters, is presented in this work. The developed software tool, which makes use of a full-wave analysis technique based on the Boundary Integral-Resonant Mode Expansion method, allows loading the considered comb-line resonators with any number of radially symmetrical partial-height metallic posts. The implemented CAD tool also allows dealing with coupling windows of arbitrary cross-section, thus drastically enhancing the flexibility of the CAD process. The excitation of the analyzed components, which is performed using generalized coaxial probes, has also been inte…

010302 applied physicsCouplingWaveguide filterEngineeringbusiness.industryProcess (computing)020206 networking & telecommunicationsCAD02 engineering and technologycomputer.software_genre01 natural sciencesComputer Graphics and Computer-Aided DesignComputer Science ApplicationsResonatorComponent (UML)0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectronic engineeringComputer Aided DesignElectrical and Electronic EngineeringCoaxialbusinesscomputerInternational Journal of RF and Microwave Computer-Aided Engineering
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A New Approach to Partial Discharge Detection Under DC Voltage: Application to Different Materials

2021

Usability of a new Direct Current Periodic waveform for partial discharge qualification in HVDC systems is exemplified by tests performed on different materials.

010302 applied physicsDC measurementsHVDCtesting methodbusiness.industryComputer sciencepattern recognitionDirect currentUsability01 natural sciencesElectronic Optical and Magnetic Materialspartial dischargeDc voltagedischarge phenomena0103 physical sciencesPattern recognition (psychology)Partial dischargeElectronic engineeringWaveformElectrical and Electronic EngineeringbusinessIEEE Electrical Insulation Magazine
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