5 research outputs found
Diretno upravljanje snagom aktivnog energetskog filtra u uvjetima asimetriÄnih faznih napona mreĆŸe zasnovano na pasivnosti
Despite its many advantages, the conventional direct power control (DPC) of shunt active power filters (SAPF) poses some problems. This paper investigates the design of a new control technical combining DPC control and passivity theory (PT) to ensure quasi-sinusoidal grid currents, under various conditions of the source voltages. The proposed approach (DPC-PT) appeals to the theory of symmetrical components (negative and positive) to solve the problem of disturbed voltages signals during a grid imbalance. The implantation of the DPC-PT methodology was developed under Matlab/Simulink environment. Simulation results showing the operation and performances of the SAPF in steady and transient states have been presented. The found results show the satisfactory dynamic response and the improvement of network behavior in the presence of an imbalance.UnatoÄ brojnim prednostima, uz konvencionalni pristup direktnom upravljanju snage aktivnog energetskog filtra povezani su i odreÄeni problemi. U ovom radu razmatra se sinteza novog pristupa upravljanju koji kombinira direktno upravljanje snagom i teoriju pasivnosti kako bi se osigurale kvazi-sinusoidalne struje mreĆŸe, u raznim uvjetima napona izvora. PredloĆŸeni pristup koristi teoriju simetriÄnih komponenti (negativna i pozitivna) za rjeĆĄavanje problema poremeÄenih naponskih signala u uvjetima neravnoteĆŸa u mreĆŸi. Razvijena metoda upravljanja implementirana je u MATLAB/Simulink okruĆŸenju. Simulacijski rezultati pokazuju rad i uÄinkovitost predloĆŸene metode upravljanja u ustaljenom stanju i za vrijeme prijelaznih pojava. Rezultati pokazuju zadovoljavajuÄe tranzijente i poboljĆĄanje vladanja mreĆŸe u uvjetima neravnoteĆŸa
Saline Sediments as a Suitable Source for Halophilic Inoculums to Degrade Azo Dyes in Synthetic and Real Textile Wastewaters by Microbial Electrochemical Systems
The treatment of textile wastewater (TWW) loaded with recalcitrant azo dyes in bioelectrochemical systems (BES) rather than in physicochemical processes is a low-cost and environmentally friendly process. The main objective of this study is to investigate the potential of different saline sediments collected from extreme Tunisian environments for the formation of bioanodes capable ofsimultaneous azo dyes degradation and electric current generation in synthetic (STWW) and real textile wastewaters (RTWW) characterized by a varied composition of azo dyes and a high salinity. The obtained bioanodes and anolytes were studied comparatively by electrochemical, microscopic, analytical, and molecular tools.Based on the UVâvisible spectra analysis, the breakdown of the azo bond was confirmed. With RTWW, the BES achieved a chemical oxygen demand (COD) abatement rate of 85%with a current density of 2.5 A/m2. Microbial community analysis indicated that a diverse community of bacteria was active for effluent treatment coupled with energy production. At the phylum level, the electrodes were primarily colonized by proteobacteria and firmicutes, which are the two phyla most involved in bioremediation. The analysis of the microbial community also showed the abundance of Marinobacter hydrocarbonoclasticus and Marinobacter sp. species characterized by their high metabolic capacity, tolerance to extremophilic conditions, and role in hydrocarbon degradation
Abstracts of 1st International Conference on Computational & Applied Physics
This book contains the abstracts of the papers presented at the International Conference on Computational & Applied Physics (ICCAPâ2021) Organized by the Surfaces, Interfaces and Thin Films Laboratory (LASICOM), Department of Physics, Faculty of Science, University Saad Dahleb Blida 1, Algeria, held on 26â28 September 2021. The Conference had a variety of Plenary Lectures, Oral sessions, and E-Poster Presentations.
Conference Title:Â 1st International Conference on Computational & Applied PhysicsConference Acronym: ICCAPâ2021Conference Date: 26â28 September 2021Conference Location: Online (Virtual Conference)Conference Organizer: Surfaces, Interfaces, and Thin Films Laboratory (LASICOM), Department of Physics, Faculty of Science, University Saad Dahleb Blida 1, Algeria