IJE_Vol 04 N 02

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Browsing IJE_Vol 04 N 02 by Author "Bessous, Noureddine"

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    Economic Perspective in the Production of Copper Nanowire using Amino Acids as Capping Agent
    (جامعة الوادي - university of el oued, 2019-12-25) Rezaoui, Mohamed Mounir; Bessous, Noureddine; Merzouk, Imad
    The purpose of this study is to evaluate the economic feasibility of making copper nanowire using amino acids as a capping agent. The evaluation was conducted from two perspectives, namely engineering analysis and economic evaluation using parameters such as gross profit margin, payback period, breakeven points, and net present value. An economic evaluation was also carried out comparing the use of amino acids Glycine, Lysine, Proline, and Alanine to find out which amino acids were more profitable in the production of copper nanowire. Furthermore, the evaluation is done by estimating the ideal situation and several other state assumptions such as changes in raw material prices, labor costs, and also income tax. From the results of this study, Glycine is known as the most profitable amino acid to be used in this process. In addition, by using Glycine as an ideal condition, based on the results of the evaluation of all parameters, this project is classified as prospective to do. Although further studies must be carried out to develop this project, this study can be the basis for developing new methods of making copper nanowire on a large scale.
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    VOLTAGE SENSORLESS BASED VIRTUAL FLUX CONTROL OF THREE LEVEL NPC BACK-TO-BACK CONVERTER DFIGUNDER GRID FAULT
    (جامعة الوادي - university of el oued, 2019-11-25) Merzou, Imad; Mohamed, k; Rezaoui, Mounir; Bessous, Noureddine; Gafazi, Abdsalem
    In this paper, a harmonic elimination of grid and stator currents of doubly fed induction generator (DFIG) in case of grid fault without line voltage sensors is proposed . This can be achieved by compensating power based on virtual flux voltage sensorless technique. Direct power control with space vector modulation (DPC-SVM) is used to control both grid-side (GSC)and rotor-side converters (RSC). To achieve the control objective, compensated active and reactive powers are calculated based on virtual flux technique with balanced and harmonic free current as a control target. A theoretical analysis of active and reactive powers under unbalanced voltage source is clearly demonstrated and the effect of grid fault on the performance of DFIG is profoundly discussed. Simulation results verified the effectiveness of the modified control strategy