Search results for "FEM analysi"

showing 10 items of 34 documents

The use of slightly asymmetrical windings for rotating electrical machines

2018

Historically, asymmetrical windings in electrical machines have been rarely used and only for specified needs, because the adoption of symmetrical configurations has always been considered the only solution during the design stage of electrical machines. The aim of this work is to demonstrate with several examples that the use of slightly asymmetrical windings can be a reasonable choice and, in certain cases, a favorable option during the machine design stage, allowing the possibility of selecting a wider range of slot/pole number combinations, without affecting the performances of the machines. More in detail, an interior permanent magnet synchronous machine equipped with a symmetrical 3-p…

Computer science020209 energy020208 electrical & electronic engineeringWinding designCogging torqueMechanical engineeringEnergy Engineering and Power Technology02 engineering and technologyCogging torqueSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciModeling and simulationHarmonic analysisElectromagnetic coilModeling and Simulation0202 electrical engineering electronic engineering information engineeringAsymmetrical windingElectrical and Electronic EngineeringFEM analysiHarmonic analysi
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A Cogging Torque Minimization Procedure for Interior Permanent Magnet Synchronous Motors Based on a Progressive Modification of the Rotor Lamination …

2022

This article describes a simple cogging torque minimization procedure for interior permanent magnet synchronous machines (IPMSMs), consisting of a progressive modification of the rotor lamination geometry. This procedure can be generalized for the main topologies of PMSM, independently of the number of stator slots or the location of the permanent magnets. For this purpose, a basic IPMSM structure is analyzed by means of the FEM (finite element method) approach, and then, several other IPMSM geometries, obtained by adequately modifying the rotor lamination geometry of the basic IPMSM model without changing its stator configuration, are proposed and discussed. The trends of the cogging torqu…

Control and OptimizationRenewable Energy Sustainability and the EnvironmentEnergy Engineering and Power TechnologyBuilding and Constructioncogging torque interior permanent magnet synchronous motors permanent magnets harmonic analysis FEM analysis rotor laminationElectrical and Electronic EngineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricicogging torque; interior permanent magnet synchronous motors; permanent magnets; harmonic analysis; FEM analysis; rotor laminationEngineering (miscellaneous)Energy (miscellaneous)
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FEM Analysis: A Review of the Most Common Thermal Bridges and Their Mitigation

2022

The necessity to improve the energy saving potential of buildings is now a duty. European and national policies are being implemented to address the important decisions being made on this subject. For these reasons, several studies focus on this relevant topic. This paper review not only focusses on it but studies it in-depth. A commercial 3D simulation software was used to design a building sited in Palermo estimating the thermal losses before and after external envelope insulation. In particular, all the thermal bridges (TBs) were analysed with the finite element method (FEM) and mitigated with rock wool insulation. The paper shows the linear thermal transmittance difference and heat flux…

Control and OptimizationSettore ING-IND/11 - Fisica Tecnica AmbientaleRenewable Energy Sustainability and the Environmentbuilding energy saving FEM analysis thermal bridges thermal bridges mitigationEnergy Engineering and Power TechnologyElectrical and Electronic EngineeringEngineering (miscellaneous)Energy (miscellaneous)
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Analisi numerico-sperimentale per la determinazione delle tensioni residue in un giunto saldato

2013

La durata di un componente dipende dall’interazione tra le caratteristiche meccaniche del materiale con cui è costruito e gli sforzi a cui esso è sottoposto. Per la determinazione dello stato tensionale agente, oltre agli sforzi dovuti ai carichi imposti durante l’esercizio, è necessario conoscere accuratamente gli stati tensionali residui derivanti dal processo di produzione. Generalmente, le tensioni residue sono indesiderate poiché possono essere di entità elevata e tale da ridurre la resistenza complessiva del componente meccanico. Un aspetto particolarmente insidioso delle tensioni residue è che la loro presenza viene generalmente riconosciuta solo dopo il verificarsi di un malfunziona…

Cut-Compliance Technique Friction Stir Welding residual stress Virtual Crack Closure Technique aluminum alloy FEM analysis
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Micro-Architecture Based Structural Model for Elastomeric Electrospun Scaffolds.

2010

Elastomeric Electrospun Scaffolds Micro-Architecture Soft Tissue Engineering FEM analysi
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Performance Comparison of Electrical Motors equipped with slightly Asymmetrical Windings

2019

This paper presents a comparison between the performances of electrical machines equipped with slightly asymmetrical windings. More in detail, by modifying the stator geometry of an Interior Permanent Magnet Synchronous Machine equipped with a symmetrical winding configuration, other two slightly asymmetrical winding topologies are obtained. The three models are, then, analyzed by means of a finite element method (FEM) and the related results are compared in terms of cogging torque, static characteristics and leakage factor. The obtained results demonstrate that the adoption of slightly asymmetrical windings could be an interesting alternative solution during the design stage of electrical …

Electric motorMaterials sciencebusiness.industry020209 energy020208 electrical & electronic engineeringWinding designCogging torque02 engineering and technologyStructural engineeringCogging torqueSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciFinite element methodHarmonic analysisElectromagnetic coilPerformance comparison0202 electrical engineering electronic engineering information engineeringStator geometryAsymmetrical windingbusinessFEM analysiHarmonic analysiLeakage (electronics)
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A cogging torque minimization procedure for IPMSMs based on different laminate geometry

2016

This paper presents a possible minimization procedure of the cogging torque generated by an IPMSM (Interior Permanent Magnet Synchronous Machine) with a progressive modification of a basic geometrical structure of rotor laminates. More in detail, an IPMSM model is analyzed by using a Finite Element Method (FEM) approach. Then, other IPMSM models, which are obtained by modifying the geometry of the IPMSM rotor laminates and by maintaining the same stator configuration, are proposed and discussed. From the obtained simulation results, the cogging torque components for each structure are determined by means of FEM and compared to each other. From this comparison, it can be stated that the cogg…

EngineeringStatorGeometry02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural scienceslaw.inventionlaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringFEM analysi010302 applied physicsRotor (electric)business.industry020208 electrical & electronic engineeringpermanent magnetsCogging torqueCogging torqueFinite element methodIPMSMSettore ING-IND/31 - ElettrotecnicaQuantitative Biology::Quantitative MethodsMagnetMinificationbusinessPermanent magnet synchronous machine2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER)
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Cogging torque comparison of Interior Permanent Magnet Synchronous Generators with different stator windings

2017

This paper presents the comparison between the cogging torques produced by four IPMSGs (Interior Permanent Magnet Synchronous Generators) with different stator winding configurations. More in detail, an IPMSG model, which is derived from a commercial geometry, is analyzed through means of a FEM (Finite Element Method) approach. Then, three more structures are determined and analyzed by adequately changing the number of stator slots of the basic IPMSG stator structure and by maintaining the same rotor configuration. From the obtained simulation results, the cogging torque components for each structure are determined and compared. From this comparison, it can be stated that the use of dissymm…

Engineeringbusiness.industryRotor (electric)StatorRenewable Energy Sustainability and the EnvironmentCogging torque; FEM analysis; IPMSG; permanent magnets; Energy Engineering and Power Technology; Renewable Energy Sustainability and the Environment020209 energyCogging torqueEnergy Engineering and Power TechnologyIPMSG02 engineering and technologyCogging torqueForgingFinite element methodlaw.inventionElectromagnetic coillawControl theoryMagnet0202 electrical engineering electronic engineering information engineeringpermanent magnetTorquebusinessFEM analysi
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Modeling and simulation of a VCM micromotor and its potential applications

2013

This paper presents the modeling and simulation of a VCM electrostatic micromotor with a new FEM analysis and implementation method, in order to determine the electrical parameters of the model and the generated electrostatic torque. Both the modeling and the simulation have been achieved using several software programs. In particular, the geometric model created with AUTOCAD has been imported to the FEMM program for the finite-element-method analysis. Then, with the LUA and MATLAB simulation programs, the parameters of the model and the related electrostatic torque have been calculated. The results obtained from this work have been compared with those reported in other scientific papers, s…

Engineeringmicromotor modeling FEM analysisbusiness.industryWork (physics)Control engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciFinite element methodModeling and simulationElectrostatic motorSoftwareMicromotorTorqueGeometric modelingbusiness
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Finite-element performance comparison of IPMSMs with unsymmetrical double-layer windings

2017

This paper presents a comparison of the performances between IPMSMs (Interior Permanent Magnet Synchronous Machine) with a symmetrical and with two different types of unsymmetrical windings. The aim is to demonstrate that the adoption of slightly unsymmetrical windings does not significantly affect the performances of the machines, both in terms of cogging torque and torque/load angle characteristics, providing also the advantage of a higher possibility of choice in terms of slot number/poles ratio. More in particular, an IPMSM model (named IPMSM-1) derived from a commercial geometry equipped with a symmetrical winding is analyzed by using a Finite Element Method (FEM) approach. The simulat…

Engineeringunsymmetrical windingsStatorCogging torque; FEM analysis; IPMSM; permanent magnets; unsymmetrical windings; Renewable Energy Sustainability and the Environment; Automotive Engineering; Electrical and Electronic EngineeringFEM analysisSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural scienceslaw.inventionHarmonic analysislaw0103 physical sciencesTorqueRenewable EnergyElectrical and Electronic Engineering010306 general physicsFEM analysi010302 applied physicsSustainability and the EnvironmentRotor (electric)business.industryRenewable Energy Sustainability and the EnvironmentElectrical engineeringCogging torquepermanent magnetsStructural engineeringCogging torqueFinite element methodIPMSMSettore ING-IND/31 - ElettrotecnicaElectromagnetic coilMagnetAutomotive Engineeringpermanent magnetunsymmetrical windingbusiness
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