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Tracking the maximum power point plays an important role for the optimization of the solar energy. The objective here is to study experimentally optimizing photovoltaic (PV) systems connected to a DC-DC converter (Boost) and a resistive load. For this, tests were conducted to determine the law of open loop control (power versus the duty cycle) for...
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Citations
... The current of solar cell is given by Equation 4 where I PH is current generated by incoming light, I S is saturation current, q is electron charge 1.6x10 -19 C, k is Boltzman constant 1.38x10 -23 J/K, T is temperature [21]. It is important to obtain solar energy near the maximum power point [22], [23]. ...
This paper explains the experimental investigation to improve the output power of solar cell using cooling and light reflection from mirrors. The results show that by adding mirror, the current and output power of solar cell increase but the open circuit voltage and maximum power voltage decrease due to heat. By adding cooling, the open circuit voltage and the maximum power voltage are improved, so the output power also increases.
... For this, the measurements of voltage and current at the output of the generator are carried out for each wind speed generated by the wind tunnel and for each value of the resistive load from 0 to 250 Ω. Figure 2(b) shows the experimental data taken during the tests. It is noted that all of these curves pass through a maximum point [10,11]. ...
Amorphous PV panel is modeled in this paper to improve electrical characteristic and curve fitting in real time data processing such as fault diagnostic and Maximum Power Point Tracking (MPPT). The proposed model uses the basic circuit model of PV solar cell by manipulating component parameters, and also changing online shunt resistance by considering solar irradiation and temperature variation effects. Irradiation and temperature data of the PV panel are captured by National Instrument data acquisition system (NI DAQ USB-6212) and applied to the simulation in Matlab software to calculate the I-V curve of PV panel in real time. Then simulation outputs are compared with measured voltage and current for fault diagnostic deliberation. This model is done for triple layers Amorphous PV panel (Unit-solar ES-62T), which is installed in MIS laboratory energy renewable platform.
The demand for energy is increasing rapidly due to the population growth and development that the state experienced in their various sectors. Environmental concerns and the need for new sources of electricity generation have arisen in recent years. So, it is necessary to innovate renewable energy sources to reduce the environmental impacts on the one hand and to meet the demand for electrical energy on the other. In order to extract the maximum power from our wind turbine, the MPPT algorithm is put on a dSPACE card. The input of our system is a small horizontal axis wind turbine while the output is a resistive load. The objective of this work is to track the maximum power of wind turbine system for a constant value of wind speed and transfer this optimal power to the DC load. We are focused on the use of a large value of the load to validate the algorithm. The data acquisition of all our experimental results is carried out using the Controldesk software.KeywordsSystems and applicationsPower electronics engineeringCommand and control systems for renewable energyWind turbineControl cardElectric power generation
Small horizontal-axis-wind-turbines (HAWT) or vertical-axis-wind-turbines (VAWT), involves converting kinetic energy into mechanical or electrical energy. They take an important place as economic and ecological renewable sources. In addition, it is an energy source that does not produce any atmospheric release or radioactive waste.The design and mechanical manufacture of small wind turbines for these two existing forms (HAWT) or (VAWT) must take into account the power factor coefficient Cp as a physical parameter to be improved.Mechanical manufacturing has experienced remarkable progress in its processes, in addition to so-called subtractive manufacturing techniques a new process was born called 3D printing or additive manufacturing the latter is based on the principle of adding material in successive layers from 3D modeling on software. This wind turbine technology should greatly benefit from additive manufacturing.This article presents research work carried out on two types of wind turbines, the first with a horizontal axis and the second with a vertical axis. The characterization and experimental modeling work is done on a HAWT, and the design prototyping work is done on a VAWT.The design of the blades and other parts was done by SolidWorks software.KeywordsSystem identificationRenewable energy sourcesWind turbine3D printing technology3D modelingRapid prototypingAdditive manufacturing
Our laboratory LGEM is equipped with a Monocrystalline solar module.
This paper presents a hybrid multi-source renewable energy system (HS) combining a wind turbine (WT) and photovoltaic (PV) sources, in a parallel electrical architecture in DC coupling mode. The reason of this coupling is to satisfy a DC load while using power electronics interface to drive both sources, through MPPT P&O control and operate them in their MPP maximum power point. An electrical testing workbench is carried out in our Laboratory, to test and validate our approach. To do that, we used the DSPACE 1104 card, as a control card that is used for the implementation of our P & O algorithm. The results obtained show the effectiveness of the proposed coupling and control strategy scheme.
