Browsing by Author "Allaoui, Tayeb"

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    Effect of fuel thermo physic parameters on electrical and energetic performances of fuel cell
    (2017) Elaguab, Mohamed; Allaoui, Tayeb; Chaker, Abdelkader; Benhamou, Amina
    For the operation of a fuel cell, pure hydrogen gives the best results in terms of performance . But the choice of fuel does depend only on the fuel; there are other factors to be considered. In addition to the availability for the user through a distribution network, it is necessary to take into account the flow of energy from wells to the wheel and the technical problems of production, transport and storage of this fuel. Storing hydrogen on vehicle board is essentially limited by the volume and the weight assigned to the tank. Add to this, practical aspects of use and safety. This work gives a comparison of the thermodynamic properties of hydrogen pile and with alcohols fuels (methanol, ethanol) directly in a temperature range varying from 298.15 to 1273.15 K and a pressure varying from 1 to 10 atm and a molar concentration of oxygen ranging from 0.21 to 1
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    Numerical simulation of solar on grid plan in Tamanrasset
    (Praise Worthy Prize, 2015) Afif, Benameur; Allaoui, Tayeb; Chaker, Abdelkader; Benhamou, Amina
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    Power flow controller of PV system
    (2015) Afif, Benameur; Benhamou, A.; Allaoui, Tayeb
    Photovoltaic cell generation is the technique which uses photovoltaic cell to convert solar energy into electrical energy. Now a day, the photovoltaic generation is developing increasingly fast as a renewable energy source. The functioning of a photovoltaic cell as the power generator is equivalent to an electric circuit containing a current generator, diode, series and shunt resistance. This paper presents a modeling and simulation of a photovoltaic system constitutes of a generator photovoltaic (PVG), DC-DC converter (boost chopper) to transfer the maximum power to a base transmitter station. The temperature and irradiance effects on the PVG will be studied, particularly on the variables such as the short circuit current Icc, the open circuit voltage Voc. Depending on the load (BTS, I=60A, V=48V) profile and climatic factors influencing, we can find a highly gap between the maximum power supplied by the PVG and that actually transferred to the BTS. A maximum power point tracker (MPPT) based on a boost converter commanded by a Pulse Width Modulation (PWM) is used for extracting the maximum power from the PVG. Thus, a real time tracking of the optimal point of functioning is necessary to optimize the efficiency on the system. The modeling and simulation of the system (PVG, boost converter, PWM and MPPT algorithm of Perturbation and Observation P&O) is then made with Matlab/Simulink software