Search results for "Flux linkage"

showing 5 items of 5 documents

Descriptor-type Kalman Filter and TLS EXIN Speed Estimate for Sensorless Control of a Linear Induction Motor.

2014

This paper proposes a speed observer for linear induction motors (LIMs), which is composed of two parts: 1) a linear Kalman filter (KF) for the online estimation of the inductor currents and induced part flux linkage components; and 2) a speed estimator based on the total least squares (TLS) EXIN neuron. The TLS estimator receives as inputs the state variables, estimated by the KF, and provides as output the LIM linear speed, which is fed back to the KF and the control system. The KF is based on the classic space-vector model of the rotating induction machine. The end effects of the LIMs have been considered an uncertainty treated by the KF. The TLS EXIN neuron has been used to compute, in …

State variableEngineeringObserver (quantum physics)neural networks (NNs)linear induction motor controlLinear Induction Motor (LIM) Kalman Filter Total Least-Squares Neural Networks.Industrial and Manufacturing EngineeringSettore ING-INF/04 - AutomaticaKalman filter (KF)Control theorylinear induction motor (LIM)state estimationElectrical and Electronic EngineeringTotal least squaresAlpha beta filterArtificial neural networkbusiness.industryEstimatorKalman filterLinear motorFlux linkagetotal least squares (TLS)Control and Systems EngineeringLinear induction motorbusinessInduction motor
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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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Field‐circuit analysis of construction modifications of a torus‐type PMDC motor

2003

This paper presents the field‐circuit analysis of a disc‐type torus DC motor with permanent magnets. Calculations of the magnetic field are carried out using the finite element method (FEM) in the 3D space. The integral quantities like the ripple‐cogging torque, back electromotive force, flux linkage, self and mutual inductances of the winding are analyzed. The electromagnetic torque is comparatively determined from the Maxwell stress tensor and co‐energy methods. Based on the 3D magnetic field calculations, the lumped‐parameter model of the tested motor is constructed, taking into account an electronic power converter as well. For comparison, various permanent magnet widths and teeth thick…

Engineeringbusiness.industryStatorApplied MathematicsElectrical engineeringMechanicsMaxwell stress tensorCounter-electromotive forceDC motorFlux linkageComputer Science Applicationslaw.inventionComputational Theory and MathematicsDirect torque controllawMagnetTorqueElectrical and Electronic EngineeringbusinessCOMPEL - The international journal for computation and mathematics in electrical and electronic engineering
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Magnetic Field and Short-Circuit Reactance Calculation of the 3-Phase Transformer with Symmetrical Amorphous Core

2006

Magnetically symmetric, 3- phase transformer has been analysed. For the two variants of the windings, the calculation results have been compared with the measured ones. Magnetic flux density components were calculated in and out of the core. The flux distribution and short-circuit reactance have been verified experimentally and a good agreement has been obtained.

Condensed matter physicsAstrophysics::High Energy Astrophysical PhenomenaReactanceengineering.materialFlux linkagelaw.inventionMagnetic fieldNuclear magnetic resonancelawElectromagnetic coilengineeringTransformerMagnetic reactanceShort circuitMathematicsElectrical steel
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PVDF based vibration measurements and their correlation with torque estimation in a FOC induction motor drive

2008

This paper presents a study concerning the vibrations generated by an induction motor drive controlled by field oriented control algorithm (FOC). The aim of the study is to identify suitable measurement points and analysis techniques in order to achieve information about vibration generated by an electric drive. Vibrations take origin both by the torque generated by the motor and the motor supply through an inverter, then they are transmitted to neighbouring structures. Torque is estimated on the basis of the estimated flux linkage; vibrations have been both measured and analysed numerically by FEM at two points of the cradle. The numerical and experimental analysis have been carried out fo…

EngineeringElectronic speed controlpolyvinyledene fluoride polymer (PVDF)Vector controlbusiness.industryVibration measurementFlux linkageInduction Motor DrivePolyvinyledene fluoride polymer (PVDF) vibration sensors Vibration measurementvibration sensorsDirect torque controlControl theorySettore ING-IND/12 - Misure Meccaniche E TermicheTorqueTorque sensorbusinessDamping torqueInduction motor
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