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Kouzou Abdellah

Bio: Kouzou Abdellah is an academic researcher. The author has contributed to research in topics: Induction motor & Inverter. The author has an hindex of 2, co-authored 6 publications receiving 30 citations.

Papers
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Journal ArticleDOI
TL;DR: An estimation method of the motor internal parameters such as the rotor resistance, the stator resistance and the magnetizing inductance, is proposed in this paper to improve the control performance, to reduce the computational complexity and to minimize the rotor speed estimation error.

35 citations

Proceedings ArticleDOI
01 Dec 2019
TL;DR: The obtained results presents an importance of the proposed method that can be used for accurate fault detection of electrical motors, based on Motor Current Signature Analysis (MCSA) method by the Fast Fourier Transform (FFT).
Abstract: Inter-turn short circuits and broken bars are serious faults, being of the most potentially destructive electrical faults in electrical motors. If these faults are not detected on-time, it can quickly expand and generate serious damage and even full damage to the motor. The objective of this paper is the modeling, diagnosis and detection of broken bar faults and inter-turn short circuit faults in Open End Winding Induction Motor (OEW-IM) based on Motor Current Signature Analysis (MCSA) method by the Fast Fourier Transform (FFT). The analysis and fault signature of the machine is performed in a healthy and defective condition in the event of the inter-turn short-circuit fault and broken rotor bars fault. The motor performance is tested under load torque and with different faulty conditions: one in a healthy condition, the second with one inter-turn short-circuits and the third with broken bars. The obtained results presents an importance of the proposed method that can be used for accurate fault detection of electrical motors.

5 citations

Proceedings ArticleDOI
01 Dec 2019
TL;DR: An Advanced fault-tolerant control technique for Five-Phase Induction Motor under Open-End Winding (FPIM-OEW) in electric vehicle (EV) is presented and provides a good performance particularly in reduction of the torque oscillations.
Abstract: In this paper, an Advanced fault-tolerant control technique for Five-Phase Induction Motor under Open-End Winding (FPIM-OEW) in electric vehicle (EV) is presented. The proposed control is able to run the control system before and after speed-sensor fault condition. Hence, the FPIM-OEW losses are decreased, which improves the overall machine efficiency. The proposed control is derived from a Backstepping control. The simulation results are provided to verify the proposed control technique under speed-sensor fault condition, in comparison with conventional Backstepping technique, the proposed strategy, provides a good performance particularly in reduction of the torque oscillations.

4 citations

Proceedings ArticleDOI
01 Nov 2018
TL;DR: In this article, a simple space vector pulse width modulation strategy is proposed to approximate the reference vector, and the calculation of dwell time becomes very simple, and simulation results are presented to verify the theoretical study of the system model.
Abstract: This paper presents the Space Vector Pulse Width Modulation technique (SVPWM) for Multilevel Cascaded H-Bridge Inverter (CHB Inverter) with a Resistive-Inductive Load (R-L Load) and an equal DC voltage source. Cascaded H-Bridge Inverter generate a large number of voltage vectors and redundant switching states, it create a problem of computational complexity in multilevel inverter. A simple space vector pulse width modulation strategy is proposed to approximate the reference vector, and the calculation of dwell time becomes very simple. Space Vector Modulation has a, numbers of features; good utilization of the DC-link voltage, low current ripple, low harmonic distortion (THD) and reduce switching losses. A three phase multilevel cascaded H-bridge Inverter has been constructed, and simulation results are presented to verify the theoretical study of the system model.

2 citations

Journal ArticleDOI
30 Dec 2019
TL;DR: A DTC technique of open end-winding induction motor (OEW-IM) under ITSC fault with stator resistance compensator based on model reference adaptive system (MRAS) to improve the DTC performance under fault condition.
Abstract: Received: 2 May 2019 Accepted: 4 July 2019 Today, direct torque control (DTC) is one of the most actively researched control techniques due to its exceptional dynamic response and less dependence on motor parameters. However, the DTC technique has a disadvantage that the stator resistance variation due to inter-turn short circuit (ITSC) fault causes an estimation error of the stator flux, this leads to a decline in the performance of DTC technique. To solve this problem, this paper proposes a DTC technique of open end-winding induction motor (OEW-IM) under ITSC fault with stator resistance compensator based on model reference adaptive system (MRAS). The main objective of the proposed estimation scheme is to improve the DTC performance under fault condition, where the stator resistance value is updated during operation to compensate the fault effects. The control system performance is verified in terms of the healthy and faulty performances through the simulation. Based on the obtained simulation results, it can be said that the effectiveness of the proposed control system is clearly validated.

2 citations


Cited by
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Journal ArticleDOI
14 Mar 2022-Machines
TL;DR: In this article , the authors present an overview of the state-of-the-art in fault-tolerant multiphase drive systems, focusing on phase/switch open-circuit failures.
Abstract: Multiphase drives offer enhanced fault-tolerant capabilities compared with conventional three-phase ones. Their phase redundancy makes them able to continue running in the event of faults (e.g., open/short-circuits) in certain phases. Moreover, their greater number of degrees of freedom permits improving diagnosis and performance, not only under faults affecting individual phases, but also under those affecting the machine/drive as a whole. That is the case of failures in the dc link, resolver/encoder, control unit, cooling system, etc. Accordingly, multiphase drives are becoming remarkable contenders for applications where high reliability is required, such as electric vehicles and standalone/off-shore generation. Actually, the literature on the subject has grown exponentially in recent years. Various review papers have been published, but none of them currently cover the state-of-the-art in a comprehensive and up-to-date fashion. This two-part paper presents an overview concerning fault tolerance in multiphase drives. Hundreds of citations are classified and critically discussed. Although the emphasis is put on fault tolerance, fault detection/diagnosis is also considered to some extent, because of its importance in fault-tolerant drives. The most important recent advances, emerging trends and open challenges are also identified. Part 1 provides a comprehensive survey considering numerous kinds of faults, whereas Part 2 is focused on phase/switch open-circuit failures.

31 citations

Journal ArticleDOI
28 Feb 2021-Energies
TL;DR: A detailed comparison between the three control techniques is presented to outline the main differences between theThree control procedures and identify the most appropriate technique in between.
Abstract: The need for regulating the operation of unhealthy motor drives has motivated the researchers to modify the control techniques in order to be valid for the new drive state. The use of a fault-tolerant facility is an attractive feature of multiphase machines; therefore, the applicability of different controllers has been established for the operation under open-phase fault conditions. The considered control algorithms were utilized to analyze the operation of the unhealthy system and evaluating the capability of the control to regulate the speed and torque under the fault condition. However, the majority of these studies considered only one control algorithm to be tested with the faulty system without comparing its performance with other techniques. The performance comparison is a vital way to visualize the features and characteristics of each algorithm. For this purpose, this paper deals with the performance comparison of the hysteresis controller, RFOC based on resonant controller and direct torque control (DTC) control under open-circuit fault conditions. A detailed comparison between the three control techniques is presented to outline the main differences between the three control procedures and identify the most appropriate technique in between.

14 citations

Journal ArticleDOI
TL;DR: The obtained results confirm and validate the ability of the proposed control procedure in achieving a robust dynamic performance of the drive against the system uncertainties such as parameter variation.
Abstract: This paper aims to develop an innovative sensorless control approach for a five-phase induction motor (IM) drive. The operation principle of the sensorless scheme is based on the sliding mode theory, within which a sliding mode observer (SMO) estimates the speed and rotor resistance simultaneously. The operation methodology of the proposed control technique is formulated using the mathematical model of the machine and the two-time-scale approach. The observation technique offers a simple and robust solution of speed and rotor resistance estimation for the sensorless control approach of the multiphase drive. The paper considers the five-phase induction motor (IM) as a case study; however, the proposed control algorithm can be employed by different types of multiphase machines. To test the applicability of the proposed sensorless control approach, the drive performance is firstly validated using MATLAB/Simulink-based simulation. Then, the simulation results are verified using real-time simulation and experimentally using TMS320C32 DSP-based control board. The obtained results confirm and validate the ability of the proposed control procedure in achieving a robust dynamic performance of the drive against the system uncertainties such as parameter variation.

11 citations

Journal ArticleDOI
09 Apr 2021
TL;DR: In this article, a sensorless field-oriented control (FOC) of an open-end stator winding five-phase induction motor (OESW-FPIM) is proposed, which combines a model reference adaptive system (MRAS) and a sliding mode (SM) observer.
Abstract: This paper proposes a sensorless field-oriented control (FOC) of an open-end stator winding five-phase induction motor (OESW-FPIM). The FOC technique used is associated with dual Space Vector Modulation (SVM) to provide a constant switching frequency and lower harmonics distortion. Furthermore, a simple hybrid observer is proposed which combines a model reference adaptive system (MRAS) and a sliding mode (SM) observer. The examined observer is designed for the estimation of the rotor flux and rotational speed as well as for the estimation of the load torque disturbances. Lyapunov theorem is used in this paper to prove the observer's stability. The work presented in this paper aims to enhance the researched motor's sensorless control and its robustness against external load disturbances and parameters variation. In the proposed MRAS-SM observer, the reference model is replaced by a SM model which uses a sigmoid function as a switching function to overcome the chattering problem. This combination is intended to make use of the advantages of both strategies. At the same time, to preserve the high-level performance of the sensorless FOC technique and to reduce system uncertainties, an estimation algorithm is developed to identify the rotor resistance and the stator resistance simultaneously during motor operation. The parameter estimation algorithm is combined with the proposed control to improve the speed estimation and control accuracy, particularly at low-speed operation. Finally, the effectiveness of the proposed control is validated in real-time by utilizing a hardware-in-the-loop (HIL) platform.

11 citations

Journal ArticleDOI
TL;DR: The proposed speed observer combines artificial intelligence and model reference adaptive system (MRAS) and is associated with the control scheme as sensorless algorithms for rotor speed and flux estimation to enhance the conventional MRAS performance especially in low-speed regions.

7 citations