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In this work, a multi-physics model was developed to assess the performance of the photovoltaic (PV) panels. The proposed model combines an optical model with an electrical and thermal model. The optical model was developed based on the theory of Markov's chains to predict the part of light that was converted to electricity. It accounts for the wavelength dependence of optical properties of different...
Wet chemical synthesis and characterizations of quaternary chalcogenide Cu2ZnSnS4 (CZTS) nanocrystals, as an alternative solar absorber material to conventional quaternary CuInxGa(1−x)S2 (CIGS), is given in detailed. Dodecanethiol and oleylamine are used as hot organic solvents and capping ligands, as for oleic acid is used with dodecanethiol to control the nanocrystals morphology. Two kinds of metal...
The short-term forecast of electricity consumption plays a vital role in the effective management of allocated resources to electricity generation. A reduction in the average forecasting error of 1% can save thousands or even millions of dirhams in an electricity generation unit. Therefore, predicting the electricity consumption is necessary to minimize costs of over or under production. The work...
This paper presents a simple 1-D modelling to describe the behavior of the oscillating water column device (OWC) used for wave energy conversion. We are interested in the free water surface motion inside the chamber, it is considered as a piston mass moving up and down due to the successive incident monochromatic waves. Two models are considered: the model without turbine (assuming the transformation...
The impact of soiling or dust is a major challenge in the use of photovoltaic (PV) panels in numerous regions of the world. In this paper we present a technology platform that can be used to deploy autonomous vehicles for cleaning solar panels. A PV power station is modeled using the Virtual Robot Experimentation Platform and Robot Operating System (ROS) is used for the algorithms to control the vehicle...
The aim of this study is to improve the electrochemical performances with carbon coating and comparison new formulations of which are used two kinds of binders: CarboxyMethyl Cellulose (CMC) and PolyVinylidene Fluoride (PVDF) with water and NMethyl-2-Pyrrolidone (NMP) respectively as solvent. Li1.5Fe0.5Ti1.5(PO4)3/C (LFTP/C) composite synthesized by simple sol gel method, followed by thermal treatment...
The manuscript presents an analysis of the aerodynamic behavior of a Horizontal Axis Wind Turbine (HAWT) using a new approach to evaluate the fluid mechanics parameters. Based on the Blade Element Momentum theory (BEM), this analysis leads to determine a detailed algorithm containing all steps needed to achieve an optimal design including the correction factors in order to straighten the weaknesses...
The main objective of this work is to study numerically the thermal behavior of solar collectors. In particularly, we performed a detailed design and parametric study of the circulation pipe of an evacuated tube collector. Indeed, we altered the geometry of the anodes by adopting three configurations: circular, rectangular and triangular. In each configuration, we changed the inlet position of cold...
Physical parameters of a photovoltaic cell can be determined from its experimental current-voltage characteristic. The accurate determination of these parameters is particularly dependent on experimental measurements conditions. The reliability of measurements of temperature variations and intensity of solar radiation are dependent on the sampling time of the measurements. Controlling the radiation...
Ceramic foams are promising materials for volumetric solar receivers in concentrated solar power (CSP) plants. Understanding the solar heat flux distribution on the receiver is of great importance for optimizing the receiver volumetric efficiency and thermal performance. This work presents a 3D optical analysis of ceramic based volumetric solar receivers. The optical analysis is conducted using a...
This paper presents a study of steady state stability of the Moroccan Power system using bifurcation analysis. More specifically, local bifurcation is considered since, unlike global bifurcation, the system can be analyzed entirely through changes in adequate local stability property of equilibrium for specific buses. The stability property used in this paper is the voltage, as this parameter becomes...
This article compares the efficiency of two methods, fuzzy logic and ripple correlation control to track the maximum power point of a photovoltaic panel used for LED lighting supply in order to illuminate locals which need artificial light during the day. The use of this technique will reduce power consumed through the electrical grid and consequently decrease the rate of carbon dioxide. Calculation...
The research presented in this paper aims to identify the impact of the Moroccan Thermal Regulation for Construction (RTCM) on thermal performance of a typical house located in the climate zone 5 (Marrakech). To broaden this study, we did the same inspection as if the house is located in the climate zone 1 (Casablanca). The study is based mainly on two aspects: experimental validation of the computer...
Capacitors which are dedicated to microelectronic applications require a lot of characteristics. Indeed they should have a high capacitance but shaped in small sizes, moreover, for some specific applications those capacitors should be flexible to be easily integrated in circuits. A lot of materials are used for this purpose. But, in order to combine all this features, a composite made of three phases...
The rotor dimensioning of a wind turbine is essentially based on aerodynamic theory to define the parameters affecting its overall performance. The blade element momentum theory (BEM) has been widely used as a tool for the design of wind turbine blade. An existing airfoil shape with known chord and twist can be input to BEM to calculate the efficiency. On the other hand, if we set airfoil as unknown...
The current-voltage characteristics of photovoltaic module are non-linear, multivariable and multi-modal and difficult to optimize the electrical intrinsic parameters. The conventional methods are incapable to optimize the parameters of photovoltaic module with high accuracy. Recently, the bio-inspired algorithm such as firefly algorithm has attracted the intention to optimize the non-linear and complex...
Given the interest in renewable energy, various types of production of this kind of energy are in study. In the present, we are interested in harnessing marine energy currents, especially the hydro-kinetic turbines with horizontal axis. The density of water is 832 times greater than air one and underwater currents are also more powerful than the wind, the electric power supplied by a hydroelectric...
This paper presents control and energy management of a stand-alone power pumping system with a battery storage. The proposed system consists of a photovoltaic generator (PV) and a battery bank which both supply an induction moto-pump. The maximum power point tracking (MPPT) algorithm is used to extract the maximum power. In our work, we have used Perturb & observ (P&O) and Fuzzy Logic Controller...
The objective of this study is to contribute to the national efforts in establishing solar radiation in many regions of Algeria. The atmospheric Linke turbidity factor (TL) is a very suitable approximation to model the atmospheric absorption and scattering of the extraterrestrial radiation relative to dry and clean atmosphere. TL is a key input for several models that assess the solar radiation under...
Our work focuses on the simulation and optimization of InSb/GaAs quantum dot solar cell. We have studied the effects of different parameters of the quantum dot such as the number of layers, the thickness and their influence on the solar cell characteristic (Current-Voltage, and the External Quantum Efficiency EQE). Moreover, we have studied the Photoluminescence PL spectra in order to characterize...
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