نتایج جستجو برای: stator resistance estimation

تعداد نتایج: 639428  

2008
Mustapha MESSAOUDI Habib KRAIEM Mouna BEN HAMED Lassaad SBITA Mohamed Naceur ABDELKRIM Mohamed N. ABDELKRIM

In this paper, the classical Direct Torque Control (DTC) of Induction Motor (IM) using an open loop pure integration suffers from the well-known problems of integration especially in the low speed operation range is detailed. To tackle this problem, the IM variables and parameters estimation is performed using a recursive non-linear observer known as EKF. This observer is used to estimate the s...

2011
K. Radhakrishnan A. Unnikrishnan

This paper deals with the recursive optimum estimation of rotor resistance, inductance and stator resistance of induction motor. The estimation of parameter and states in the presence of system noise is achieved using EKF, which takes in to account measurement and modelling inaccuracies. A major limitation in the parameter estimation using EKF is that its optimality is dependent on the choice o...

2014
Dj. Cherifi Y. Miloud A. Tahri

The primary objective of this paper is to elimination of the problem of sensitivity to parameter variation of induction motor drive. The proposed sensorless strategy is based on an algorithm permitting a better simultaneous estimation of the rotor speed and the stator resistance including an adaptive mechanism based on the lyaponov theory. To study the reliability and the robustness of the sens...

2011
Tarek BENMILOUD Abdelhafid OMARI

In this paper, an improved scheme of adaptive flux observer of induction motor is proposed. This adaptive observer is used with fieldoriented control of induction machine. It is based on using induction motor model with the estimation of the load torque besides the estimation of the stator resistance. The robustness of this observer with respect to the variation of the stator resistance. The pe...

2015
Saber KRIM Soufien GDAIM Mohamed Faouzi MIMOUNI

The first objective of this research is to present an improved Direct Torque Control based on the Space Vector Modulation (DTC-SVM) and a Sliding Mode Observer (SMO). The disadvantages of the conventional Direct Torque Control (DTC) are the high ripples for the electromagnetic torque and the stator flux, as well as the distortions of the stator current. To solve these problems, we have used the...

2010
Habib Kraiem Mustapha Messaoudi Mohamed Naceur Abdelkrim

In this paper a sensorless direct torque control (DTC) scheme of permanent magnet synchronous motor (PMSM) is proposed. To improve the performance of the classical DTC a modified control scheme based on twelve sectors instead of six is presented and a comparison between the two methods is carried out. The high performance of the DTC is related to the accuracy of the flux estimation witch is aff...

2014
CHRISTY VARGHESE

The permanent magnet synchronous motor is increasingly playing an important role in advanced motor drives. An encoder or resolver attached to the shaft of the motor typically supplies the feedbacks required for motor speed control. Many advanced motor drives cannot tolerate the use of these feedback devices because of reliability concerns in a harsh environment, price, space and weight limitati...

2009
Juggrapong Treetrong

This paper proposes a new scheme of induction motor parameter estimation using Genetic algorithm (GA) for condition monitoring. The flux linkage model and torque model of an induction motor is adapted to the estimation. The scheme is developed to obtain all the motor parameters: stator and rotor resistance, stator and rotor leaking reactance and magnetizing reactance, which paves the way to dia...

2015
B. Dumnic V. Katic V. Vasic D. Milicevic M. Delimar

This paper describes an improved sensorless vector control strategy for a squirrel cage induction generator used in variable speed wind energy conversion systems (WECS). The main goal is to design a robust control algorithm immune to generator parameter variations. In order to estimate the rotational speed of the induction generator, a model reference adaptive system (MRAS observer) is used. It...

2014
M. Jannati N. R. N. Idris M. J. A. Aziz

The performance of an Indirect Rotor Field-Oriented Control (IRFOC) scheme for Induction Motors (IMs) is strongly dependent on the motor parameters especially, rotor resistance. As such, to ensure high performance drive system, the variation of the rotor resistance due to the temperature increase need to be estimated based on the available terminal variables. However, the algorithm used to esti...

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