Search results for "Torque"

showing 10 items of 373 documents

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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Identification of induction motor thermal model for improved drivetrain design

2016

Selection of components of electric drivetrains is not only based on evaluating their ability to perform according to mechanical specifications, but — what is equally important — on assessing their thermal protection limits. These are typically affected by electrical and thermal properties of motors and drives. Although rated parameters (such as power, torque, speed, etc.) are easily accessible in catalogs of equipment producers, more specific properties like mass / length of copper winding, heat dissipation factor, rotor / stator dimensions etc. are not available to customers. Therefore, effective selection of drivetrain components is limited due to the lack of sufficient data and the need…

010302 applied physicsEngineeringStatorRotor (electric)business.industry020208 electrical & electronic engineeringDrivetrainControl engineering02 engineering and technology01 natural sciencesAutomotive engineeringlaw.inventionMotor driveDuty cyclelaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringTorqueDesign processbusinessInduction motor2016 XXII International Conference on Electrical Machines (ICEM)
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Sensorless control of induction motors using an extended Kalman filter and linear quadratic tracking

2017

Induction motors are the most commonly used prime-movers in industrial applications. Many induction motors supplied by frequency converters are coupled with a physical angular rotor position/velocity sensor which makes the drive complex and require maintenance. This paper presents a sensorless control structure to avoid using a physical angular rotor position/velocity sensor. The proposed method estimates and control the angular rotor velocity using optimal control theory. The optimal controller used in this paper is based on linear quadratic tracking and the states of the machine are estimated using an extended Kalman filter. Both the controller and the estimator utilize the same internal …

010302 applied physicsEngineeringbusiness.industryRotor (electric)Control engineering02 engineering and technologyConvertersOptimal control01 natural scienceslaw.inventionExtended Kalman filterControl theoryPosition (vector)law0103 physical sciences0202 electrical engineering electronic engineering information engineeringTorque020201 artificial intelligence & image processingbusinessInduction motor2017 20th International Conference on Electrical Machines and Systems (ICEMS)
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Tetragonal Heusler Compounds for Spintronics

2013

With respect to the requirements of spin torque transfer (STT) materials, one the most promising materials families are the tunable tetragonal Heusler compounds based on Mn2YZ (Y=Co,Fe,Ni,Rh,...; Z=Al, Ga, Sn). They form the inverse cubic Heusler structure with three distinct magnetic sublattices, which allows a fine tuning of the magnetic properties. Starting with the stoichiometric Mn3Ga compound, we explored the complete phase diagram of Mn3-xYxZ (Y=Co, Fe, Ni and Z=Ga ). All series exhibit thermally stable magnetic properties. As we demonstrate, Mn3-xFexGa series, which are tetragonal over the whole range of compositions, are good as hard magnets, whereas magnetically more weak Mn3-xNix…

010302 applied physicsMaterials scienceCondensed matter physicsSpintronicsSpin-transfer torque02 engineering and technologyCrystal structure021001 nanoscience & nanotechnology01 natural sciencesElectronic Optical and Magnetic MaterialsTetragonal crystal systemFerromagnetismMagnet0103 physical sciencesElectrical and Electronic Engineering0210 nano-technologyStoichiometryPhase diagramIEEE Transactions on Magnetics
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Analytical induced force solution in conducting cylindrical bodies and rings due to a rotating finite permanent magnet

2020

Abstract Using exact expression of the magnetic field we derive analytical expression for the induced current density and volume force in a solid conducting cylinder and ring due to a coaxial rotating finite permanent magnet with transverse magnetization. The integral torque is calculated from these expressions and validated with numerical and experimental results. Conditions for useful magnetic field approximations are found.

010302 applied physicsPhysicsRing (mathematics)02 engineering and technologyMechanics021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesElectronic Optical and Magnetic MaterialsMagnetic fieldMagnet0103 physical sciencesCylinderTorqueCoaxial0210 nano-technologyAxial symmetryCurrent densityJournal of Magnetism and Magnetic Materials
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Experimental comparison of two control algorithms for low-saliency ratio interior permanent magnet synchronous motors

2018

In this paper, an experimental 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) is described, analyzed and discussed. This investigation was carried out on a small-power IPMSM with low saliency ratio. More in detail, after a previous simulation study, the control techniques have been experimentally implemented and validated through means of a dSPACE® rapid prototyping system. The performances of the two algorithms have been evaluated and compared, obtaining interesting results.

010302 applied physicsRapid prototypingControl algorithmElectromagneticsPermanent magnet synchronous motorComputer scienceRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringlow saliency ratio motor02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesField oriented control algorithmmaximum torque per ampere control algorithmControl theoryMagnet0103 physical sciencesAutomotive Engineering0202 electrical engineering electronic engineering information engineeringTorqueInterior permanent magnet synchronous machineAmpereMaximum torque
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Enhanced loss model algorithm for interior permanent magnet synchronous machines

2017

This paper presents an experimental study on the impact of the parameter variations over the performances of a LMA (Loss Model Algorithm) designed for an IPMSM (Interior Permanent Magnet Synchronous Machine). In a previous work, the characterization was carried out by assessing, for several working conditions, the motor parameters that influence the motor efficiency. The proposed enhanced loss model algorithm is implemented in a rapid prototyping system and its performances, in term of efficiency, are compared with other control systems, obtaining promising results.

010302 applied physicsRapid prototypingInterior permanent magnet synchronous motorComputer science020208 electrical & electronic engineeringWork (physics)02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciencesDC motorTerm (time)Settore ING-IND/31 - Elettrotecnicaspeed control drive systemsMagnetControl system0103 physical sciences0202 electrical engineering electronic engineering information engineeringTorquepower loss minimizationSettore ING-INF/07 - Misure Elettriche E ElettronicheAlgorithmPermanent magnet synchronous machine2017 AEIT International Annual Conference
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Parameter sensitivity of flux-linkage based sensorless control for permanent magnet synchronous motors

2017

Sensorless control can be utilized to reduce cost, size and total complexity of a motor drive or enhance reliability of the system. This paper first presents a sensorless control algorithm for a surface permanent-magnet synchronous motor (SPMSM) based on estimated flux linkages and stator currents. Within the algorithm, rotor position error can be predicted by comparing the estimated currents with measured stator currents. Performance of the sensorless control based on flux-linkages and the dependency of the algorithm on motor parameters is then numerically investigated via simulations. It is found from the investigation that the accuracy of the method depends on the motor working condition…

010302 applied physicsRotor (electric)Computer scienceStator020208 electrical & electronic engineering02 engineering and technology01 natural sciencesFlux linkagelaw.inventionMotor driveDirect torque controlControl theorylaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringTorqueSensitivity (control systems)Synchronous motor2017 20th International Conference on Electrical Machines and Systems (ICEMS)
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Extended two-body problem for rotating rigid bodies

2021

A new technique that utilizes surface integrals to find the force, torque and potential energy between two non-spherical, rigid bodies is presented. The method is relatively fast, and allows us to solve the full rigid two-body problem for pairs of spheroids and ellipsoids with 12 degrees of freedom. We demonstrate the method with two dimensionless test scenarios, one where tumbling motion develops, and one where the motion of the bodies resemble spinning tops. We also test the method on the asteroid binary (66391) 1999 KW4, where both components are modelled either as spheroids or ellipsoids. The two different shape models have negligible effects on the eccentricity and semi-major axis, but…

010504 meteorology & atmospheric sciencesmedia_common.quotation_subjectFOS: Physical sciencesAngular velocityDegrees of freedom (mechanics)Two-body problem01 natural sciencesTotal angular momentum quantum number0103 physical sciencesTorqueEccentricity (behavior)010303 astronomy & astrophysicsMathematical Physics0105 earth and related environmental sciencesmedia_commonEarth and Planetary Astrophysics (astro-ph.EP)PhysicsVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430Applied MathematicsMathematical analysisAstronomy and AstrophysicsComputational Physics (physics.comp-ph)Potential energyEllipsoidComputational MathematicsSpace and Planetary ScienceModeling and SimulationPhysics - Computational PhysicsAstrophysics - Earth and Planetary AstrophysicsCelestial Mechanics and Dynamical Astronomy
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Adaptive-Gain Observers and Applications

2007

We distinguish two kinds of observers for nonlinear systems which are used by scientists and engineers: empirical observers and converging observers.

0209 industrial biotechnology020208 electrical & electronic engineeringSystem identification02 engineering and technology[SPI.AUTO]Engineering Sciences [physics]/AutomaticAdaptive observerNonlinear system020901 industrial engineering & automationClassical mechanics[SPI.AUTO] Engineering Sciences [physics]/AutomaticControl theory[ SPI.AUTO ] Engineering Sciences [physics]/Automatic0202 electrical engineering electronic engineering information engineeringCanonical formNon linear observerLoad torqueComputingMilieux_MISCELLANEOUSMathematics
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