Search results for " induction motor"

showing 10 items of 43 documents

Input-Output Feedback Linearization Control with On-line MRAS Based Inductor Resistance Estimation of Linear Induction Motors Including the Dynamic E…

2016

This paper proposes the theoretical framework and the consequent application of the input–output feedback linearization (FL) control technique to linear induction motors (LIMs). LIM, additionally to rotating induction motor, presents other strong nonlinearities caused by the dynamic end effects, leading to a space-vector dynamic model with time-varying inductance and resistance terms and a braking force term. This paper, starting from a recently developed dynamic model of the LIM taking into consideration its end effects, defines a FL technique suited for LIMs, since it inherently considers its dynamic end effects. Additionally, it proposes a technique for the on-line estimation of the indu…

0209 industrial biotechnologyEngineeringLinear induction motor feedback linearization end-effects MRAS estimator.02 engineering and technologyInductorEnd effectsIndustrial and Manufacturing Engineering020901 industrial engineering & automationSettore ING-INF/04 - AutomaticaControl theoryAdaptive system0202 electrical engineering electronic engineering information engineeringlinear induction motor (LIM)Feedback linearizationElectrical and Electronic Engineeringmodel reference adaptive system (MRAS) estimatorbusiness.industry020208 electrical & electronic engineeringControl engineeringInductanceControl and Systems EngineeringLinear induction motorfeedback linearization (FL)HyperstabilitybusinessMRASInduction motor
researchProduct

Sensorless Speed Control for Double-Sided Linear Induction Motor Applications

2019

In this work, a flux and speed observer for double-sided linear induction motor applications is presented and experimentally validated. More in detail, from a Double-Sided Linear Induction Motor (DLIM) prototype, the complete modelling and the determination of the related parameters are here reported. Furthermore, the equations for a d-flux and q-flux observer are conceived and several simulation tests are performed. From the good agreements between the trends over time of the speed estimated by the observer and the simulated one, it can be stated that the observer is well designed. Moreover, in order to experimentally validate the proposed observer, a test bench is set-up for the DLIM/obse…

0209 industrial biotechnologyTest benchElectronic speed controlObserver (quantum physics)Computer scienceSpeed control020208 electrical & electronic engineeringWork (physics)DLIM02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciDynamic modelFlux observerSettore ING-IND/31 - Elettrotecnica020901 industrial engineering & automationControl theoryLinear induction motor0202 electrical engineering electronic engineering information engineeringDSPACEFlux observer2019 8th International Conference on Renewable Energy Research and Applications (ICRERA)
researchProduct

On the Detection of Distributed Roughness on Ball Bearings Via Stator Current Energy: Experimental Results

2009

ANOVADistributed roughness ball bearing stator currentdistributed roughnessbearing diagnostics; distributed roughness; ANOVA; GLM; induction motorGLMbearing diagnostics distributed roughness ANOVA GLM induction motorbearing diagnosticsinduction motor
researchProduct

State Space-Vector Model of Linear Induction Motors Including End-effects and Iron Losses - Part II: Model Identification and Results

2020

This is the second part of an article, divided into two parts, dealing with the definition of a space-vector dynamic model of the linear induction motor (LIM) taking into consideration both the dynamic end-effects and the iron losses as well as the offline identification of its parameters. This second part is devoted to the description of an identification technique that has been suitably developed for the estimation of the electrical parameters of the LIM dynamic model accounting for both the dynamic end-effects and iron losses. Such an identification technique is strictly related to the state formulation of the proposed model and exploits genetic algorithms for minimizing a suitable cost …

Computer scienceidentification techniquelinear 22 induction motor (LIM)020208 electrical & electronic engineeringSystem identification020302 automobile design & engineering02 engineering and technologyFunction (mathematics)Industrial and Manufacturing EngineeringFinite element methodEnd-effectsEnd-effectIdentification (information)0203 mechanical engineeringSettore ING-INF/04 - AutomaticaControl and Systems EngineeringControl theoryLinear induction motor0202 electrical engineering electronic engineering information engineeringState spacelinear induction motor (LIM)State (computer science)Electrical and Electronic Engineeringparameter estimationInduction motor
researchProduct

State Space-Vector Model of Linear Induction Motors including End-Effects and Iron Losses Part I: Theoretical Analysis

2020

This is the first part of the article, divided into two parts, dealing with the definition of a space-vector dynamic model of the linear induction motor (LIM) taking into consideration both the dynamic end-effects and the iron losses and its offline identification. This first part specifically treats the theoretical formulation of this model, which has been expressed in a state form, so to be, in perspective, suitably adopted for developing novel nonlinear control techniques, nonlinear observers as well as electrical losses minimization techniques. Besides the formulation of the dynamic model in space-vector state form, a steady-state analysis is proposed, highlighting the combined effects …

Computer sciencestate modelend-effectsNonlinear controlIndustrial and Manufacturing EngineeringMagnetic fluxEnd-effectIdentification (information)Nonlinear systemPerspective (geometry)Settore ING-INF/04 - AutomaticaControl and Systems EngineeringControl theoryLinear induction motorspace vectorState spacelinear induction motor (LIM)MinificationElectrical and Electronic Engineering
researchProduct

EMI Analysis in Electrical Drives under Lightning Surge Conditions

2012

In this paper, a complete model of a power drive system including the earth electrodes is proposed to evaluate electromagnetic conducted interference due to lightning pulses. Circuit model of a power drive system is joined with a full-wave approach for the simulation of the time behavior of the grounding system. The proposed model enables to predict the electromagnetic conducted interference generated in the power drive system when lightning conditions involve the earth electrodes.

Conducted electromagnetic interferenceEngineeringbusiness.industryGroundElectromagnetic compatibilityElectrical engineeringElectromagnetic interference (EMI) electromagnetic transients finite-difference time-domain method induction motor drives lightning protection moments method.Condensed Matter PhysicsEarthing systemLightning arresterLightningAtomic and Molecular Physics and OpticsElectromagnetic interferencePhysics::GeophysicsSettore ING-IND/31 - ElettrotecnicaHardware_GENERALPhysics::Plasma PhysicsEMIElectronic engineeringElectrical and Electronic Engineeringbusiness
researchProduct

Input-Output Feedback Linearization Control of a Linear Induction Motor Taking Into Consideration Its Dynamic End-Effects and Iron Losses

2020

This article proposes a new input-output feedback linearization control (FLC) technique of linear induction motors (LIMs), taking into consideration both the dynamic end-effects and the iron losses. Starting from a previously conceived dynamic model, including the dynamic end-effects and the iron losses, all the theoretical framework of the FLC has been developed. The proposed FLC improves a previous version of FLC in accounting also the iron losses, which in LIMs with fixed-secondary sheet play a pivotal role more than in rotating induction motors (RIMs). The proposed FLC has been experimentally tested on a suitably developed test setup, and experimental comparisons between the proposed FL…

Dynamic end-effectsEnd effectComputer scienceinput-output feedback linearization control (FLC)05 social sciencesControl (management)020207 software engineering02 engineering and technologyiron lossesIndustrial and Manufacturing EngineeringLinear Induction Motor (LIM) Input-output Feedback Linearization Control (FLC) Dynamic end-effects Iron Losses Space-vector State ModelSettore ING-INF/04 - AutomaticaControl and Systems EngineeringControl theoryLinear induction motor0202 electrical engineering electronic engineering information engineeringlinear induction motor (LIM)0501 psychology and cognitive sciencesFeedback linearizationspace-vector state modelnonlinear controlElectrical and Electronic EngineeringInput output feedback linearization050107 human factors
researchProduct

Experimental comparison between direct and indirect measurement techniques for the characterization of Linear Induction Motors

1997

Abstract An experimental comparison between direct and indirect measurement techniques for the on-line characterization of Linear Induction Motors (LIMs) is presented. Indirect measurements are based on a mathematical model of the motors. Direct measurements are carried out by means of traditional instruments and a smart sensor, located on the LIM and linked to the controller by the power supply line. Both a synthetic description of the LIM model and the sensor architecture are reported. The experimental results, achieved by applying different feeding strategy, are discussed.

Electric motorEngineeringbusiness.industryApplied MathematicsControl engineeringLinear motorCondensed Matter PhysicsCarrier currentPower (physics)Intelligent sensorControl theoryLinear induction motorLine (geometry)Electronic engineeringElectrical and Electronic EngineeringbusinessInstrumentation
researchProduct

Sensorless variable speed single-phase induction motor drive system based on direct rotor flux orientation

2012

The single-phase induction motor (SPIM) is one of the electrical machines more used in the World, and can be found in several fractional and sub-fractional horsepower applications in houses, offices, shoppings, farms, and industries. The introduction of more sophisticated applications has required the use of variable speed drives for SPIM, where the adoption of sensorless techniques is the more reasonable option for speed control due to the low cost of this electrical machine. A proposal for sensorless variable speed SPIM drive based on direct rotor field orientation techniques is presented in this paper. None transformation is used in order to eliminate the asymmetry of the stator windings…

Electronic speed controlComputer scienceRotor (electric)StatorPID controllerSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilaw.inventionControl theoryElectromagnetic coillawControl systemInverterSensorless Variable Speed Drives Single-Phase Induction Motor Direct Field OrientationInduction motor2012 XXth International Conference on Electrical Machines
researchProduct

Sensorless variable speed single-phase induction motor drive system

2012

It is usual find single-phase induction motor (SPIM) in several house, office, shopping, farm, and industry applications, which are become each time more sophisticated and requiring variable speed drives. Considering the low cost of this machine, the adoption of sensorless speed control is the more reasonable option for SPIM drives. This paper presents a proposal for sensorless variable speed SPIM drive based on direct rotor field orientation techniques. An observer based on two independent linear close-loop control systems provides the estimation of the rotor flux and speed from the measurements of the stator currents and voltages. These estimatives are used by close-loop systems for speed…

Electronic speed controlStatorRotor (electric)Computer scienceAC powerSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciDirect Field Orientation Sensorless Single-Phase Induction Motor Variable Speed Driveslaw.inventionControl theorylawElectromagnetic coilControl systemInverterInduction motor
researchProduct