Comparative StudyAnd Simulation Analysis For Two Models Of Autonomous Application For Photovoltaic System

International audienceIn this paper, we present a comparative study, analysis, and evaluation of a model of autonomous kit with electrochemical storage and autonomous kit with the wire of sun. by using the maximum power point Tracking efficiency of photovoltaic with different DC-DC converter topologies for photovoltaic Application. It provides different improvements to the electrical architecture. In fact, we present a new alternative for improving both the performance of photovoltaic (PV) systems and the efficiency of the energy conversion This solar system represents the complete chain simulation in MATLAB / SIMULINK. Thus, we looking at the matching connection stage between the GPV, MPPT regulator, solar battery, circuit breaker, the DC load represents by an LED bulb. In addition, we using a new additive block represented by a voltage probe, current probe. Likewise, we will see the effect of the absence of MPPT regulator on the overall performance of PV system. The development of electronics in the field of power production, which makes the trade-off between power and cost level on the one hand and new control techniques on the other hand, allows us to better manage the environment our problematic on isolated site. One of the main components is the load DC and AC. The new trends in this area are the use of economy solution by using renewable energy. The simulation results show that this control (by use components of direct connected solar ''Load DC'', and with storage electrochimical ''Load AC'') gives us a good agreement performance in terms of electric product necessary in our saharan country especialy in public lights. I.INTRODUCION Renewable sources of energy acquire growing importance due to its enormous consumption and exhaustion of fossil fuel. Renewable energy is abundant, free, sustainable, and clean and can be harnessed from different sources in the form of wind, solar, tidal, hydro, and geothermal and biomass [1]. Energy supplied by the sun in one hour is equal to the amount of energy required by the human in one year [2]. Photovoltaic energy system has gained wide popularity in the past decade as one of the renewable energy sources due to the possibility of depletion of conventional energy sources and its high cost as well as its negative effects on the environment. The choice will involve a bigger or smaller energy production and efficiency as well as an importance difference in the cost. For this reason, it is important to know different types of architecture in order to choose the correct PV architecture for each PV installation [4] [3]. Solar energy could be one of the significant sources as an alternative energy for the future. In regard to endless importance of solar energy, it is worth saying that photovoltaic energy is a best prospective solution for energy crisis [4] The architecture of the power converter is important in a PV system. This structure determines the main characteristics of the photovoltaic installation, as the amount the PV modules need for the PV system and its type of connection. The effect of the partial shadowing or mismatch between PV modules in the energy production will also depends on the type of the architecture. Nevertheless, the price and cost of the PV also depends on the choice of the architecture. [5]. II-MATHEMATICAL MODELING OF THE PV MODULES A solar cell constitutes the basic unit of a PV generator which, in turn, is the main component of a solar generator. The electrical analysis of the PV cell includes a source which is the sun and unique equivalent electrical circuit which includes diode and series and parallel resistances. A solar cell equivalent electrical circuit can be represented by a one-diode model as shown in fig.1