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A Novel MRAS Based Estimator for Speed-Sensorless Induction Motor Drive
... The rotor flux based MRAS speed estimator, developed by Schauder in [15], is the most popular scheme among MRAS speed observers due to its ...this method is sensitive to the stator resistance ...
Model Reference Adaptive System (MRAS) Technique For Sensorless Scalar Control Of Induction Motor
... sensorless rotor speed estimation ...the speed information of induction motor, tachometers are used. Speed sensor requires extra space for mounting and care and hence increases the cost ...
Online Stator and Rotor Resistance Estimation Scheme Using Sliding Mode Observer for Indirect Vector Controlled Speed Sensorless Induction Motor
... The induction motor (IM) is widely used in industry because of its advantages such as reliability, efficiency, and low cost in comparison to other motors used in similar application [1]. The dynamic model of induction ...
Lidar estimation of rotor-effective wind speed – an experimental comparison
... linear rotor- effective horizontal and vertical shear ...semi-analytic method was presented to calculate the correlation between a spinner-mounted lidar and blade-effective wind ...
A Sensorless Speed Estimation For Brushed Dc Motor At Start-Up
... sensorless method for estimating the speed of brushed dc motors at starting ...The method uses sensorless techniques based on the current ripple component at ...The method employs active ...
Modifying the Structure of a Fuzzy Controller to Improve Speed Estimation Response in Rotor-Flux MRAS DTC Drive Yashar Farajpour
... estimate rotor speed by adjusting it based on the error between the reference and the estimated rotor fluxes and its rate of ...rotor speed. On the other hand, the output of FLC MRAS ...
Vector Controlled Sensorless Estimation and Control of Speed of Induction Motors
... flux estimation below cutoff frequency of the ...using rotor flux as functional candidate is the presence of integrator which makes it unattractive for operation at near zero ...The speed ...
Adaptive Sliding Mode MRAS Strategy for Sensorless Speed Control of SPIM Drives
... the rotor speed and the stator ...proposed method for the estimation of speed is based on Sliding Mode Model Reference Adaptive System (SM-MRAS) ...SM-MRAS speed ...
Universal Flying Restart Strategy for Asynchronous and Synchronous Motors.
... pulses method, the rotor speed and position can be estimated through the above explained ...application method for PMSM using scalar control ...control method and the motor nameplate ...
A Robust enlarged Kalman Filter for Speed-Sensorless Control of a Decoupled PMSM Drive and Linearized
... parameter estimation using a full order EKF, the model structure (1) is discretized directly using Euler approximation (1st order) proposed in ...Iq), speed (Ω), rotor position (θ), load torque (TL) ...
CONTROL OF STARTING CURRENT IN THREE PHASE INDUCTION MOTOR USING FUZZY LOGIC CONTROLLER
... control method is widely used to control the speed harmonic, and starting current , voltage, rotor speed , output torque of a3 phase squirrel cage induction motor (IM) over a wide range by ...
Volume 2, Issue 8, August 2013 Page 267
... MRAS computes a desired state i.e functional candidate using output of two models: Reference and adjustable. The error between the two models is used to estimate an unknown parameter. A condition to form the MRAS is that ...
Analysis of High Efficiency Wind Energy Conversion System Using MATLAB
... wind speed data for the site in mind before any decision can be made as to its ...wind speed are found in the relevant texts (see the ‗References and resources‘ section at the end of this fact ...
PV Cell fed Step-up Resonant Converter for Induction Motor Drive Application
... synchronous speed of the stator field, and hence it rotates. But in practice, rotor never succeeds in catching ...If rotor catches up the stator speed, there won’t be any relative speed ...
Frequency Variation in Rotor Current on Changing Mechanical Load in Three Phase Induction Motor
... its rotor winding receives its energy from stator by means of induction ...and rotor- produced ...synchronous speed, it is called asynchronous ...
NEURAL NETWORK SPEED CONTROLLER FOR DIRECT VECTOR CONTROL OF INDUCTION MOTORS
... The following section describes the design procedure for the neural network speed controller (NNC). The objective of this NNC is to develop a back propagation algorithm such that the output of the neural network ...
An Image Processing Based Method For Vehicle Speed Estimation
... vehicle’s speed in various states of India. Vehicle flow estimation is an important part of some traffic management ...and speed of the vehicle creates ...and speed estimation using ...
Vibration Isolation Of A Rotating Motor
... 35 4.1 Transmissibility against speed for motor only 38 4.2 Transmissibility against speed for motor and rotor only 39 4.3 Transmissibility against speed for motor, rotor and unbalance 4[r] ...
Estimation of Rotor Flux using Neural Network Observer in Speed Sensorless Induction Motor Drive
... the estimation of stator currents used as an adjustable ...the rotor flux. This rotor flux can be obtained from the voltage or current model, the use of such a model gives poor performance at the low ...
IS-MRAS With On-Line Adaptation Parameters Based on Type-2 Fuzzy LOGIC for Sensorless Control of IM
... and rotor resistance estimation for speed sensorless control induction motor with on-line adaptation ...The speed estimation using the PI controller deteriorates at low speeds and hence ...