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The climate's dependence requires a complex modelling and other optimization methods for the control of the hybrid system. Moreover, recently, and as for both the technological progression of the hardware and software, researchers may more and more optimize problems through the use of enabled platforms. The paper aims to discuss this issue. Our hybrid pumping installation contains a photovoltaic generator,...
Fuel cells are currently experiencing an invigorating resurgence, both at the industrial and research levels. Diagnosis of stack performance is of importance for proton exchange membrane fuel cell (PEMFC) research. In this paper, a bond graph (BG) approach was used for modelling, simulation and robust diagnosis of a PEMFC. In literature, several PEMFC diagnosis methodologies were outlined in terms...
The deficit of electricity and high conventional electricity costs still among the major drawbacks for supply remote areas. Electrifying these zones with photovoltaic (PV) systems associated to a hydraulic storage is a promising alternative. The main objective of this study is to optimally size this system generation interacting with irradiations and load cycles, especially for a standalone application...
In this paper, methods for sizing of PV pumping systems and the simulation of (DTC) Direct Torque Control of induction motor that is used for piloting a water pump supplied by a photovoltaic generator are presented. The sizing of the PV pumping system is based on the calculation of the water needs, the required hydraulic energy and the estimation of available solar power. The best sizing of the PV...
Energy consumption is a critical issue affecting the lifetime of WSN. It is observed that energy consumed for processing the data to transmit is considerably less than used in transmission. A number of techniques are proposed to solve this problem. Data compression is a promising approach to reduce transmitted data and inter-nodes communications over wireless channels. In this paper, we present a...
This paper presents a dynamic modeling and simulation of a small wind turbine connected to a Permanent Magnet Synchronous Generator PMSG, which is controlled by a Zero d-axis current (ZDC) control scheme. The model of the wind turbine system is developed using basic mathematical equations and it is carried out using the Matlab /Simulink environment. The simulation results demonstrate the effectiveness...
In this work, we present a new technical method for identifying the complex impedance model parameters of a Proton Exchange Membrane (pEM) Fuel Cell for on-board diagnosis in real time. The study of the PEM Fuel Cell modelling is important in order to understand the physical phenomena that occurring in this green renewable energy source. A diagnosis method is presented by analyzing the behavior of...
It's a modeling of a small Variable Speed Wind Turbine coupled to a multi-pole permanent magnet synchronous generator to supply a DC Load. The aerodynamic model converts the kinetic power of the wind into a mechanical power illustrated in a rotational speed of the rotor and transmitted to the generator by a rigid shaft of one degree of freedom, it's the model of a gearless one masse drive train connected...
This paper presents a Linear Parameter Varying (LPV) model of a scalar-controlled photovoltaic pumping system. The considered uncertainty is the temperature that affects the overall model. It is taken under an affine structure. For the control of the system, V/f strategy is chosen in a closed loop. The approach is proved to enhance good results. Stability is reached following the simulation of the...
This work presents the results of integrating a Fuzzy Logic controller instead of a classic PI controller in an IFOC speed regulation scheme dedicated for a 3 phased asynchronous moto-pump type Ebara Pra-50. A comparative study between the two different techniques is presented where a simulations by simulating the developed model of the studied system under Matlab-Simulink environment. The obtained...
This paper presents the design, modeling and simulation of hybrid power system driven by two sources of renewable energy. The first studied system is a photovoltaic generator, which is a DS-100M model consists of six models connected in series and it is linked to a DC/AC inverter where the MPPT controller, based on the Perturb and Observe technique, is applied. The second one is a small wind turbine...
This paper presents the decoupled active and reactive power control (PQ control), using a Phase-Locked Loop (PLL) for synchronization, and applied to the control of Multicellular Parallel Inverter (MPI) for a grid-connected Photovoltaic (PV) system. We explain the value of this multicellular structure of inverter compared to a conventional inverter. We also present and discuss the simulation results...
This work deals with a non-linear technique to control a grid connected photovoltaic system. Sliding-Mode Controller (SMC) is proposed to offer a proper and a rapid maximum power point tracking to control the boost converter. To guarantee the SMC stability, three conditions are fulfilled and performed: transversality, reachability and equivalent control. The Sliding-Mode approach is applied also to...
Energy consumption is a critical issue affecting the lifetime of WSN. It is observed that energy consumed for processing the data to transmit is considerably less than used in transmission. A number of techniques are proposed to solve this problem. Data compression is a promising approach to reduce transmitted data and inter-nodes communications over wireless channels. In this paper, we present a...
In this study, the control of the inverter power system and the fuel cell production system secured the main behavior of the distributed generation on the grid power injection. The deadbeat control strategy allows high control flexibility and capability of adapting to the network faults. Coupling and decoupling systems are provided ensuring the safety of the electric production and the electrical...
In this paper, a fuzzy logic controller is developed in order to control the inside temperature and relative humidity inside an agricultural greenhouse. First, a thermal dynamic model was developed to describe the greenhouse environment and to predict the inside temperature and relative humidity. The agricultural greenhouse was modeled using Matlab-Simulink environment. The simulation results showed...
This work is within the scope of the study and modeling of fuel cell based systems for energy optimization. In fact, the electric vehicle is based on the proton exchange membrane fuel cell. The energy optimization problem is explored and inspected using a two-stage controller. In first stage, a predictive controller is designed based on the equivalent consumption minimization strategy. The second...
This paper discusses the frequency behavior of the impedance model fuel cell using the spectroscopy method. We used the “EIS Spectrum Analyser” software to view the influence of the different electrochemical components in the frequency domain. The frequency behavior is deducted by the Bode diagram or by the Nyquist plot. In this work, I focused on the impedance spectrum found by the Nyquist diagram...
The work presents in this paper concerns the studies of the effects of the different auxiliaries on the performance of PEMFC and to control this auxiliaries (incoming hydrogen and oxygen flows to its electrodes, the temperature, the humidifier….). The aim is to highlight the bond graph approach to present a PEM fuel cell model. The adopted control is conventional based on a PID and PI regulator. This...
This paper presents a dynamic model of an agricultural greenhouse in order to predict the air temperature and the relative humidity using Matlab/Simulink environment. It describes the transfer of heat and water vapor inside the greenhouse during four days in winter. The simulation results showed that the temperature and the humidity of the internal air vary with the weather conditions (solar radiation,...
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