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Abderrahmane Berkani,Mofareh Hassan Ghazwani,Karim Negadi,Lazreg Hadji,Ali Alnujaie,Hassan Ali Ghazwani Techno-Press 2024 Ocean systems engineering Vol.14 No.1
In this paper, the authors explore the modeling and control of a point absorber wave energy converter, which is connected to the electric grid via a power converter that is based on a linear permanent magnet synchronous generator (LPMSG). The device utilizes a buoyant mechanism to convert the energy of ocean waves into electrical power, and the LPMSG-based power converter is utilized to change the variable frequency and voltage output from the wave energy converter to a fixed frequency and voltage suitable for the electric grid. The article concentrates on the creation of a predictive control system that regulates the speed, voltage, and current of the LPMSG, and the modeling of the system to simulate its behavior and optimize its design. The predictive model control is created to guarantee maximum energy output and stable grid connection, using Matlab Simulink to validate the proposed strategy, including control side generator and predictive current grid-side converter loops.
Delloula Lakhdari,Nadjem Lakhdari,Ines Laourari,Abderrahmane Berchi,YoungKwon Park,Yasser Vasseghian,Mohammed Berkani 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.124 No.-
In this study, three types of electrodes based on polyvinyl alcohol (PVA)/ polyaniline (PANI) are synthesizedand their effects on the electro-oxidation of methanol (MeOH) are investigated. Composite electrodesof PVA/PANI-Ni, PVA/PANI-Cu, and PVA/PANI-NiCu are synthesized via the in-situpolymerization of aniline, Cu, Ni, and NiCu (Ni80Cu20 alloy) particles in the presence of PVA. Opticaland chemical compositions and morphological characteristics of composite films are determined usingUV–Vis, FTIR, SEM, and TGA analysis. The electrode degradation efficiency of MeOH following oxidationand the elimination of toxins from the solution by voltammetry and chronopotentiometry is also investigated. The results indicate that PVA/PANI-NiCu performs better than PVA/PANI-Ni electrode. The degradationof MeOH in an alkaline medium is monitored using UV–visible spectroscopy under a currentdensity of 2.18 mAcm2 with a stock solution of 0.1 M MeOH for 120 min. The toxicities of MeOH andthe generated by-products were tested and confirmed through a growth-inhibition test againstStaphylococcus aureus ATCC 6538 using the disk-diffusion method; the obtained results confirmed theeffectiveness of our process.