Abdelkhalek Chellakhi
Verified @ucd.ac.ma
Laboratory for Energy (LabSIPE), National School of Applied Sciences of El Jadida
Laboratory for Energy (LabSIPE), National School of Applied Sciences, chouaib doukkali, El Jadida
Scopus Publications
Scopus Publications
Abdelkhalek Chellakhi, Said El Beid, and Younes Abouelmahjoub
Springer Science and Business Media LLC
Abdelkhalek Chellakhi, Said El Beid, Younes Abouelmahjoub, and Hajar Doubabi
Springer Science and Business Media LLC
Hamid Belghiti, Khalid Kandoussi, Abdelkhalek Chellakhi, Youssef Mchaouar, Rabie El Otmani, and El Mostafa Sadek
Informa UK Limited
Abdelkhalek Chellakhi, Said El Beid, and Younes Abouelmahjoub
Elsevier BV
Abdelkhalek Chellakhi, Said El Beid, and Younes Abouelmahjoub
Hindawi Limited
The purpose of this paper is to enhance the performance and tracking efficiency of solar photovoltaic systems. This aim can be achieved by operating the photovoltaic array at its optimum power and reducing the output ripple problem of DC-DC converters that affect and stress sensible electronic loads. In view of that, an advanced maximum power point (MPP) tracking (MPPT) scheme, which can guarantee zero oscillation tracking of the accessible MPP and less ripple magnitude on the output side of the DC-DC boost converter, is used. Various simulations are carried out under three conditions of solar irradiance variation, namely, standard test conditions (STC), rapid, and Sin scenarios, using the MATLAB/Simulink® environment, to assess and benchmark the robustness of the tracking of the new MPPT scheme over the celebrated Increment of Conductance (INC) MPPT scheme. Based on the simulation results, the proposed scheme can significantly improve tracking accuracy and reduce the magnitude of ripples on both sides of the boost converter compared to the INC scheme. Certainly, the proposed scheme can provide a shorter time response (0.011 seconds) to locate and track the expected MPP, which is 2.55 times less than that of the INC scheme; a zero power magnitude oscillation instead of 15.9 watts of the INC scheme; and six-time minimization of the magnitude of output voltage ripples compared to the INC scheme. Furthermore, the suggested MPPT scheme has the better tracking efficiency in all scenarios; 99.86%, 99.60%, and 99.62% in the STC, rapid, and Sin scenarios, respectively, with an average value of 99.69% compared to the INC MPPT scheme, which has 94.23%, 95.28%, and 97.87% in the STC, rapid, and Sin scenarios, respectively, with a moderate average tracking efficiency of 95.79%. Finally, the accuracy and tracking performance of the proposed MPPT scheme are verified by real-time examination using the RT-LAB simulator. According to the results obtained, the proposed scheme provides the highest tracking efficiency of 99.80% and 97.77% under the STC and sudden insolation change scenarios, respectively, compared to the INC scheme, which shows, respectively, 97.8% and 96.5% under both scenarios.
Y. Mchaouar, Y. Abouelmahjoub, A. Abouloifa, H. Abouobaida, A. Chellakhi, I. Lachkar, F. Giri, A. Elalli, C. Taghzaoui, and S. El Beid
Elsevier BV
Y. Abouelmahjoub, Y. Mchaouar, A. Chellakhi, A. Abouloifa, H. Abouobaida, S. El Beid, M. Kissaoui, F. Giri, and M. Moutchou
Elsevier BV
A Chellakhi, S. El Beid, Y. Abouelmahjoub, and Y. Mchaouar
Elsevier BV
Younes Abouelmahjoub, Hassan Abouobaida, Said El Beid, Abdelkhalek Chellakhi, and Salaheddine Elouarraki
Elsevier BV
Abdelkhalek Chellakhi, Said El Beid, and Younes Abouelmahjoub
Informa UK Limited
Y. Abouelmahjoub, S. El Beid, H. Abouobaida and Abdelkhalek Chellakhi
This study addresses the problem of controlling series active power filters for voltage sag compensation. Indeed, we can control this kind of filter to generate a voltage series that compensates the grid voltage sag in order to protect the sensitive loads against this perturbation. This study is aimed at seeking a control strategy that meets the main control objective, which is the compensation of grid voltage sags and this by considering the following technical constraints: (i) the nonlinearity of the system dynamics, (ii) the high dimension of the system model, and (iii) the inaccessibility of some system variables to measurements. To meet the main control objective, we propose a nonlinear controller that is designed based on the system nonlinear model, using the backstepping technique. This controller involves a nonlinear regulator and a grid observer. The former copes with the compensation issue. The observer provides online the grid voltage estimations. In addition to a theoretical analysis of the control system, the performances of the proposed controller are evaluated by simulation using MATLAB/Simulink.
Abdelkhalek Chellakhi, Said El Beid and Y. Abouelmahjoub
This paper develops and discusses an improved MPPT approach for temperature variation with fast-tracking speed and reduced steady-state oscillation. This MPPT approach can be added to numerous existing MPPT algorithms in order to enhance their tracking accuracy and response time and to reduce the power loss. The improved MPPT method is fast and accurate to follow the maximum power point under critical temperature conditions without increasing the implementation complexity. The simulation results under different scenarios of temperature and insolation were presented to validate the advantages of the proposed method in terms of tracking efficiency and reduction of power loss at dynamic and steady-state conditions. The simulation results obtained when the proposed MPPT technique was added to different MPPT techniques, namely, perturb and observe (PO besides, the steady-state power oscillations of the conventional P&O, INC, and modified MPP-Locus MPPT methods are 2, 1, and 0.6 watts, but it is neglected in the case of using the improved approaches. In this study, the MATLAB/Simulink software package was selected for the implementation of the whole PV system.
Abdelkhalek Chellakhi, Said El Beid and Y. Abouelmahjoub
This paper is aimed at harvesting the photovoltaic systems extracting power under difficult irradiance and load conditions, by proposing a novel maximum power point tracking (MPPT). This proposed MPPT tactic has been examined under various climatic and load conditions using two powerful and accurate simulation environments for PV systems, MATLAB/Simulink and Proteus. The first implementation using the MATLAB/Simulink software was carried out to examine the performance of the novel MPPT tactic under sudden insolation and load change, where the second implementation using the Proteus software was carried out in order to prove that the novel MPPT tactic can be easily implemented using low-cost components, Arduino board, and LCD display. The simulation results prove that the novel MPPT tactic has a high convergence speed to locate the MPP, especially at fast solar irradiation and load variation with zero oscillation under steady-state operation, which takes less than 9.6 milliseconds (ms) under the MATLAB/Simulink software and 0.24 microseconds (μs) under Proteus environment. That means it is about six times faster than P&O and five times faster than INC MPPT methods, and its tracking efficiency is between 99.40% and 99.86%. Furthermore, the novel MPPT tactic shows the best tracking accuracy and better ability to mitigate power losses under overall simulation scenarios compared with other traditional MPPT methods.
Abdelkhalek Chellakhi, Said El Beid, Y. Abouelmahjoub and H. Abouobaida
Abdelkhalek Chellakhi, Said El Beid and Y. Abouelmahjoub
Y. Abouelmahjoub, S. El Beid, H. Abouobaida and Abdelkhalek Chellakhi
This work addresses the problem of controlling single-phase half bridge series active power filter (SAPF) in presence of perturbations in single-phase power supply grid voltage. The control objective of the SAPF is to compensate the voltage perturbations (voltage harmonics and voltage sags) in order to protect the sensitive load against the disturbances mentioned above. A nonlinear controller is designed, using the Backstepping technique, to cope with the compensation issue. A stability analysis is carried out using average theory to describe the control performances. These latter have been validated by numerical simulation in MATLAB/ SIMULINK.
Y. Abouelmahjoub, H. Abouobaida, S. El Beid and Abdelkhalek Chellakhi
In this paper, considering the problem of control the full bridge shunt active power filter operating with nonlinear loads. The main control objectives are: (i) compensation of harmonics current and the reactive power caused by the nonlinear load in order to ensure a perfect power factor correction (PFC) at the point of common coupling (PCC); (ii) regulation the DC voltage of inverter. A nonlinear control strategy is proposed to achieve the main objectives taking into account of grid impedance, and of all non negligible parameters of circuit. The inner-loop control is designed, using the Lyapunov technique, to cope with the compensation issue. The outer-loop control ensures the DC voltage regulation of inverter. The control performances are analyzed using the averaging theory. Simulation results show the achievement of above objectives and also the effectiveness of the proposed control.
Abdelkhalek Chellakhi, El Beid Said and Abouelmahjoub Younes
This paper proposes a novel algorithm for maximum power point tracking (MPPT) in photovoltaic panel sourced boost converter. The novel MPPT tactic has a high convergence speed and zero oscillation around the MPP under steady state operation, and high tracking speed in response to rapid changing of irradiance. Furthermore, it improves the tracking accuracy, without increase the implementation complexity. The proposed technique has been simulated in Matlab/Simulink environment and compared with some other MPPT techniques, such as Perturbed and observed (P & O), Increment of Conductance (INC) and fuzzy logic (FLC).
Abdelkhalek Chellakhi, El Beid Said and Abouelmahjoub Younes
An improved MPPT tactic is proposed in this paper for temperature variation in photovoltaic panel sourced boost converter. In this article the improved algorithm has easily added to a novel MPPT tactic proposed in [1] and it can significantly improve the tracking accuracy, without increasing the implementation complexity of the PV systems. The improved technique has been simulated in Matlab/Simulink environment. In addition, the proposed algorithm yielded consistently more favorable results than did the MPPT algorithm in [1].