Publications Internationales
Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13
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Item Adaptive control of induction motor using artificial neural network with estimation of rotor flux(2007) Chetate, Boukhmis; Kabache, Nadir; Ladiguin, Anatoly NikolaevitchItem Minimum action time of a robust fuzzy speed controller for induction machine drive(Advances in Modelling and Analysis C, 2007) Chetate, Boukhmis; Bradai, RafikIn this paper, we propose a procedure to design an optimal fuzzy controller for indirect field oriented controlled induction machine drives. This controller has best possible performances with a minimum action time possible in a practical implementation. First, we design a fuzzy PI controller having the maximum of fuzzy sets (7 input/output membership functions), which show better static and dynamic performances. This controller is specific to speed close loop of an indirect field oriented induction machine drive. Then, in order to minimize its composition the ANFIS (Adaptive Network-Based Fuzzy Inference System) structure is applied to perform a structural and parametric optimization of this controller. We propose also, a procedure to reproduce the input/output mapping of this controller with an approximation using artificial neural networks (ANN)Item Extended-Kalman-filter based sensorless speed vector control of induction motor taking iron loss into account(Advances in Modelling and Analysis C, 2007) Chetate, Boukhmis; Kheldoum, A.In vector controlled induction motor drives, the instantaneous rotor speed is measured using whether sensors or estimators. Since the basic Kaiman filter is a state observer, its use in vector controlled schemes has received much attention. However, these schemes are based on the assumption that the existence of iron loss in an induction motor may be neglected. The paper shows the effect of iron loss on the extended Kaiman filter performance that is designed on the basis if the ironless induction machine model. Original simulation results are carried out to demonstrate this effect as well as the effectiveness of the suggested approach to minimise the speed estimation error without modifying the observer algorithmItem Fuzzy logic-based controller for position regulation of electric drives(Advances in Modelling and Analysis C, 2007) Chermalikh, A.V.; Chetate, Boukhmis; Maidanski, I.I.; Kheldoum, A.Electrical drives are characterized by their natural non- linearity owing to their proper design and their time-varying mathematical models. When used to drive industrial systems, e.g. variable speed or variable position drives, conventional control methods are usually applied to design speed and position controllers. However, at certain performance level, these methods are not satisfied. The present paper combines fuzzy logic, mostly used to control system characterized by non-linearity and uncertainty, with new control structures to overcome difficulties listed earlier. The obtained results have proved the good foundation of the suggested methodItem The use of root mean square values (RMS) for the shortcoming diagnostic of permanent magnet synchronous machine using artificial neurone network module(2008) Khodja, Djalal Eddine; Chetate, BoukhmisItem Paramètres capacitifs et surtensions dans l’enroulement d’un moteur asynchrone, alimenté par un convertisseur MLI(2005) Belassel, M.T.; Bespalov, Victor; Chetate, BoukhmisDans ce travail nous présentons une méthode de calcul des paramètres capacitifs et des surtensions dans un enroulement d’un moteur asynchrone à cage alimenté par un convertisseur M.L.I La détermination des paramètres capacitifs est l’une des étapes les plus importantes dans le processus de modélisation mathématique des processus ondulatoires dans les moteurs asynchrones (MA), de ces paramètres dépend ce qu’on appelle la distribution initiale des tensions dans les capacités de l’enroulement. La machine étudiée dans ce travail possède un enroulement concentrique à deux couches avec une distribution anarchique des conducteurs circulaires ronds dans l’encoche, elle est fabriquée par l’entreprise ELECTRO-INDUSTRIES d' AZAZGA (ALGERIE) avec un numéro d’identification 2234- □ 041Item A new diagnostic method of faulty transistor in a three-phase inverter(2006) Benslimane, Tarak; Chetate, BoukhmisThis paper describes a method of detection and identification of transistor base drive open-circuit fault of 3-phase voltage source inverter (VSI), feeding an open loop controlled induction motor. The detection mechanism is based on a novel technique of wavelet transform. In this method, the stator currents will be used as an input to the system. No direct access to the induction motor is required. The simulation results are presentedItem A method of minimizing the power losses in an induction motor with a squirrel-cage with vector control(2004) Chetate, Boukhmis; Kheldoun, AissaAn approach to optimizing the flux linkage of the rotor of an induction motor is considered when the motor operates in a vector control mode with indirect orientation in the direction of the field. In this system, the expression for the frequency of the rotor e.m.f. contains the rotor winding impedance; this impedance must therefore be precisely estimated in real time. It is proposed that this should be done using a fuzzy-logic adaptation mechanism. The results of using such a mechanism in a physical model confirm its effectiveness. Key words: induction motor, rotor, vector control, fuzzy logicItem Implementation of SVPWM based on hysteresis control strategy applied on autonomous parallel active filter(2005) Benslimane, T.; Aliouane, K.; Chetate, BoukhmisThis paper presents a study on the harmonic depollution of the electric power network as well as the compensation of reactive power by an autonomous three-phase active filter at parallel structure. The presentation of the system of filtering starts initially with the presentation of the modeling of the whole of the system network, parallel active filter and polluting load. In second place, the principle of identification of the harmonic currents by the method of the instantaneous real and imaginary powers is developed, followed by the presentation of the SPACE VECTOR PULSES WIDTH MODULATION BASED ON HYSTRERESIS applied to the inverter of the active filter. A strategy which makes it possible to control the inverter of the filter to generate the harmonic currents required with the optimization of the number of commutations of the semiconductors used. The following part is devoted to the presentation of regulation system of the terminal condenser voltage of the autonomous active filter and in the last are presented the digital simulation and experimental resultsItem Choice of input data type of artificial neural network to detect faults in alternative current systems(2006) Benslimane, T.; Chetate, BoukhmisThis paper present a study on different input data types of ANN used to detect faults such as overvoltage in AC systems (AC network , induction motor). The input data of ANN are AC voltage and current. In no fault condition, voltage and current are sinusoidal. The input data of the ANN may be the instantaneous values of voltage and current, their RMS values or their average values after been rectified. In this paper we presented different characteristics of each one of these data. A digital software C++ simulation program was developed and simulation results were presented