Papers by oumaymah elamri
This work covers the study of a variable speed wind turbine chain using a Permanent Magnet Synchr... more This work covers the study of a variable speed wind turbine chain using a Permanent Magnet Synchronous Generator (PMSG) to produce energy injected into a grid. The characteristic parameters of the grid are frequency, the symmetry of the three-phase system and voltage waveform. When the output voltage wave is not sinusoidal, disturbances can affect the proper performance of the equipment connected to the grid. Therefore, to overcome this problem, we have integrated into this chain a back to back converter made up of a two-level rectifier and a five-level inverter NPC that are controlled by the SVPWM technique. The converter control strategy is detailed. This study was handled under the Matlab/Simulink interface. The simulation results demonstrate the high performance of this control strategy in renewable energy applications: reduction of total harmonic distortion and increase in power factor.
2021 8th International Conference on Electrical and Electronics Engineering (ICEEE), 2021
This work consists in developing a method for the non-linear control of a variable speed wind tur... more This work consists in developing a method for the non-linear control of a variable speed wind turbine system using a permanent magnet synchronous generator (PMSG) for power generation injected in grid. Objective of backstepping control is to improve performance of conversion system with choice of appropriate regulated variables. PMSG is connected to grid via back-to-back voltage sources converters (BtB VSCs), consisting of a two-stage rectifier and a five-stage NPC inverter, operated by Space Vector Pulse Width Modulation (SVPWM). In control system of generator-side converters Maximum Power Point Tracking (MPPT) algorithm has been employed. Firstly, modelling of wind turbine system has been discussed. Thereafter, the control schemes detailed description based on Backstepping Control (BSC) for control of generator and grid-side converters based on Lyapunov stability technique has been described. Furthermore, the dc-bus is regulated using BSC. A prototype is tested under varying wind conditions. The present work has been treated using the Matlab/Simulink. Simulation results proved good performance of proposed methods of BSC.
Advances in Science, Technology and Engineering Systems Journal, 2020
International Review of Electrical Engineering (IREE)
Electronics ETF
This paper presents the analysis, design, and simulation of a power system composed of a grid-tie... more This paper presents the analysis, design, and simulation of a power system composed of a grid-tied single-phase five-level inverter with an LCL filter. First, the analysis of the proposed system has been carried out in the decoupled Direct-Quadrature frame, where the Phase-Lock-Loop technique has been used for synchronizing the LCL-filter-connected-grid with the five-level inverter. Next, the design of the LCL filter has been discussed. In this paper, we focused on the active power control based on grid current adjustment using a proportional-integral regulator and a high-frequency modulation technique for the switching of a five-level inverter, where the Sinusoidal-Pulse-Width-Modulation technique is selected. All circuit design and control schemes are discussed step by step to provide the effectiveness of the system analysis. The theoretical analysis is verified through simulation results in MATLAB/Simulink environments. An important finding when using the five-level inverter in a...
World Electric Vehicle Journal
The goal of this study was to figure out how to regulate an induction motor in a hybrid electric ... more The goal of this study was to figure out how to regulate an induction motor in a hybrid electric vehicle. Conventional combined vector and direct control induction motors take advantage of the advantages of vector control and direct torque control. It is also a method that avoids some of the difficulties in implementing both of the two control methods. However, for this method of control, the statoric current has a great wealth of harmonic components which, unfortunately, results in a strong undulation of the torque regardless of the region speed. To solve this problem, a five-level neutral point clamped inverter was used. Through multilevel inverter operation, the voltage is closer to the sine wave. The speed and torque are then successfully controlled with a lower level of ripple in the torque response which improves system performance. The analysis of this study was verified with simulation in the MATLAB/Simulink interface. The simulation results demonstrate the high performance ...
International Journal of Engineering Trends and Technology
International Journal of Engineering Trends and Technology
This paper presents a simulation and experimental validation of H-bridge inverter with the implem... more This paper presents a simulation and experimental validation of H-bridge inverter with the implementation of a Newton-Raphson algorithm for selective harmonics elimination. Contributions are made in interfacing and programming of Arduino ATmega328P microcontroller and use it to control of single-phase inverter by selective harmonic elimination technique. Through this work, we have given a general analytical description of the total harmonic distortion and present the method of application of the Newton-Raphson algorithm for selective harmonic elimination. MATLAB Simulink used for simulation and Arduino IDE software was used to program the Arduino board. The validity of the simulation model is verified by experimental results, the inverter was realized and the algorithm control is tested, results of the simulation and realization are compared, they show the efficiency of the system analysis and demonstrate the ability of Arduino to control the inverter and to generate complex signals for the electrical systems control.
Conference Presentations by oumaymah elamri
O. Elamri, A.E. Toubal Maamar, A. Oukassi, and L. EL bahir, “Conception d'un Filtre LCL et la Commande d’un Onduleur à Cinq Niveaux Connecté au Réseau”, in Conférence Internationale sur le Monitoring des Systèmes Industriels 2022 (CIMSI’2022) ENSA, Tanger, Morocco, 14-15 Décembre 2022., Dec 14, 2022
Dans cet article, nous proposons la conception d'un filtre LCL pour un onduleur monophasé à cinq ... more Dans cet article, nous proposons la conception d'un filtre LCL pour un onduleur monophasé à cinq niveaux connecté au réseau. Nous avons effectué l'étude en découplage Direct-Quadrature, où la technique de la boucle à verrouillage de phase (PLL) a été employée pour la synchronisation entre l'onduleur à cinq niveaux doté d'un filtre LCL d'une part et le réseau d'autre part. Au cours de cette étude, nous nous concentrons principalement sur la conception du filtre LCL, et le contrôle de la puissance active avec la technique de Modulation de Largeur d'Impulsion (MLI) sinusoïdale. On se sert de l'environnement MATLAB/Simulink pour valider l'analyse théorique. Selon les résultats obtenus, le taux de distorsion harmonique total du courant dans le réseau ne dépasse pas 0,15%, ce qui est conforme aux normes internationales.
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Papers by oumaymah elamri
Conference Presentations by oumaymah elamri