Research Interests:
Research Interests:
Research Interests:
:The transfer of the power from the PV generator to the load is not always optimal. The operating point of the characteristic of the said generator is strongly linked to the temperature variations, the solar irradiation and the load. In... more
:The transfer of the power from the PV generator to the load is not always optimal. The operating point of the characteristic of the said generator is strongly linked to the temperature variations, the solar irradiation and the load. In order for the module to provide its maximum available power, it’s necessary to permanently adapt the load with the photovoltaic generator. This adaptation can be carried out by inserting a DC-DC converter (boost) controlled by a “Maximum Power Point Tracking” (MPPT). The work is a comparative study of the power maximization methods incremental conductance, Hill climbing and perturbation and observation. Matlab is used to implement modeling and simulation tasks and to compare the efficiency and accuracy of execution for the selected MPPT methods. The simulation results for operating characteristics I-V and P-V for various cell temperature and solar irradiation closely matched manufacturer data sheet of the solar panel. Also, the algorithms described in this work have a considerable higher precision and it can be concluded that the output power of the PV module for the Incremental Conductance method is comparatively greater than the P&O and Hill Climbing method in a different conditions.
Research Interests:
Research Interests:
Abstract The aim of this paper is to introduce a novel solar tracking alternative whose principle is based on continuous tests comparing the produced thermal energy corresponding to the new apparent sun position with the electrical energy... more
Abstract The aim of this paper is to introduce a novel solar tracking alternative whose principle is based on continuous tests comparing the produced thermal energy corresponding to the new apparent sun position with the electrical energy consumption required to drive the solar collector to the new position. Accordingly, the sun-tracking occurs whenever the net energy gain, the gap between thermal production and electrical consumption, is higher than an optimal threshold which reflects the required limits from which the sun-tracking process should begin. The proposed approach was investigated through modeling and optimization. Furthermore, to check the accuracy of the theoretical model, a series of comparisons were also performed, which have shown a reasonable agreement between the simulation results and the available data in the literature. The findings have revealed that there is an optimal threshold to start the sun-tracking process depending on the sun-tracking mode, sky clearness and season. In terms of comparison with conventional sun-tracking systems, it has been proven that, even though the suggested sun-tracking approach enhances slightly the net energy during typical clear sunny days, the improvement of the net energy gain becomes more significant under partly cloudy conditions.
Research Interests:
Research Interests:
To assess wind energy potential in Northern Morocco, a validated approach based on the two-parameter Weibull distribution is employed, utilizing wind direction and speed data. Over a span of two years, from January 2019 to December 2020,... more
To assess wind energy potential in Northern Morocco, a validated approach based on the two-parameter Weibull distribution is employed, utilizing wind direction and speed data. Over a span of two years, from January 2019 to December 2020, measurements taken every 10 min are collected. This study is centered on a comprehensive and statistical analysis of electricity generated from a wind farm situated in the Tetouan region in Morocco. This wind farm boasts a total capacity of 120 MW, comprising 40 wind turbines, each with a 3 MW capacity, strategically positioned along the ridge. Among the available techniques for estimating Weibull distribution parameters, the maximum likelihood method (MLM) is chosen due to its statistical robustness and exceptional precision, especially for large sample sizes. Throughout the two-year period, monthly wind speed measurements fluctuated between 2.1 m/s and 9.1 m/s. To enhance accuracy, monthly and annual theoretical power densities were recalculated u...
Research Interests:
Research Interests:
In this note, the robust static output feedback stabilisation of an induction machine is addressed. The machine is described by a non homogenous bilinear model with structural uncertainties, and the feedback gain is computed via an... more
In this note, the robust static output feedback stabilisation of an induction machine is addressed. The machine is described by a non homogenous bilinear model with structural uncertainties, and the feedback gain is computed via an iterative LMI (ILMI) algorithm.
Research Interests:
Due to the very high initial investment cost of photovoltaic systems and their low conversion efficiency, it is essential to operate PV generators at the point of maximum power (MPP). Within this framework, our first objective in this... more
Due to the very high initial investment cost of photovoltaic systems and their low conversion efficiency, it is essential to operate PV generators at the point of maximum power (MPP). Within this framework, our first objective in this thesis is to develop and improve the PV system, contributing to optimizing the PV panels' energy through a DC-DC power electronics converter. For this reason, a further improvement of the incremental conductance technique is proposed to improve the MPP tracking capability of the PV system when the level of solar irradiation is suddenly increased or when the load undergoes variations. The new technique includes two processing phases: a calculation phase to improve the tracking speed and a regulation phase to improve MPP tracking efficiency. In order to evaluate its performance, the proposed new method is compared to other methods, namely the Incremental conventional conductance (INC) technique and the Modified Variable Size Incremental conductance (...
Research Interests:
The load supply from a photovoltaic generator is still the subject of many studies. In this document, we will look to the modeling of the photovoltaic system and the presentation of maximum power point tracking algorithms (MPPT). The... more
The load supply from a photovoltaic generator is still the subject of many studies. In this document, we will look to the modeling of the photovoltaic system and the presentation of maximum power point tracking algorithms (MPPT). The purpose of this paper is to extract the maximum power point at which the photovoltaic system can operate optimally. The most common MPPT techniques that will be studied are: “Perturbe and Observe” method (P&O), Conductance Increment method (CI) and Fuzzy Logic Control (FL). Finally, we will simulate via Matlab the algorithm of each method in order to obtain the performance of each one.
Nowadays, inverters are power electronics devices used in the renewable energy conversion systems and also to fed induction motors, therefore the continuity of service of power converter has been a major concern. This paper presents a new... more
Nowadays, inverters are power electronics devices used in the renewable energy conversion systems and also to fed induction motors, therefore the continuity of service of power converter has been a major concern. This paper presents a new approach of open circuit fault detection in a pulse width modulation three phase voltage source inverter. The fault occurrence detection was based on the standard deviation of the measured current vector and the localization of the fault leg where the open circuit fault occurred was achieved analyzing the current vector in d-q frame system. The reliability of this technique was confirmed in a real time simulation. Keywords— inverter, IGBT, power converter, induction motor,
this paper proposes the control of the rotor-side PWM converter of a variable speed doubly fed induction generator based wind turbine using rotor flux oriented vector control based fuzzy logic. Two fuzzy logic controllers were used to... more
this paper proposes the control of the rotor-side PWM converter of a variable speed doubly fed induction generator based wind turbine using rotor flux oriented vector control based fuzzy logic. Two fuzzy logic controllers were used to control the direct and the quadratic rotor currents as an alternative of the conventional proportional and integral (PI) controller to overcome any disturbance. The system’ model is developed in MATLAB/SIMULINK. Keywords—DFIG, wind turbine, TSR, fuzzy logic. Nomenclature: Rs , Rr : Stator and rotor phase resistances Ls , Lr : Stator and rotor phase inductances M: the mutual inductance p : Number of poles pair of the machine Cm : The mechanical torque f: Friction coefficient J : Moment of inertia Ωtur: The mechanical speed of the turbine. Ωmec: The generator speed. Caer: The torque applied on the shaft of turbine. Cg: The torque applied on the shaft of the generator.
Research Interests:
This paper presents a two-way optimization of the Perturb & Observe (P&O) maximum power point tracking (MPPT) technique using current correction and fuzzy logic techniques. In fact, photovoltaic (PV) energy has become more and more... more
This paper presents a two-way optimization of the Perturb & Observe (P&O) maximum power point tracking (MPPT) technique using current correction and fuzzy logic techniques. In fact, photovoltaic (PV) energy has become more and more coveted today. In the future, it will become a necessity. To ensure its optimization, maximum operating point tracking method is considered as a technological key in PV systems. One of the most used MPPT methods is the P&O technique. In this paper, we will focus on optimizing this method based on two techniques. A first attempt has been made to estimate a current correction of the P&O algorithm in case of illumination variation. Then, fuzzy logic optimization attempt had been highlighted to improve power loss. It is shown that both proposed techniques are very effective and allow considerable improvement of accuracy and are less affected by sudden variation of climatic parameters. The proposed approaches are tested via Matlab software and compared the cla...
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
This paper presents a new approach for open circuit fault diagnosis using the park's vector technique in a three phase voltage source inverter. The technique has proved its effectiveness through simulation results, the standard... more
This paper presents a new approach for open circuit fault diagnosis using the park's vector technique in a three phase voltage source inverter. The technique has proved its effectiveness through simulation results, the standard deviation of the currents in the d-q frame was used to extract the symptoms failure, and the analysis of the currents to localize the faulty switch, within one current period and half without additional sensors which reduce the costs, a fault tolerant system was also proposed.
Research Interests:
Research Interests:
Research Interests:
Unlike the power plants that rely on combustion of fossil fuels such as coal or natural gas, wind power stands as the strong alternative for a clean source powered by the wind and producing no air emissions causing acid rain or gases... more
Unlike the power plants that rely on combustion of fossil fuels such as coal or natural gas, wind power stands as the strong alternative for a clean source powered by the wind and producing no air emissions causing acid rain or gases greenhouse effect. Nevertheless, the production of wind energy is intermittent and depends strongly on the wind speed and requires the introduction of electronic controllers in order to connect such kind of source to the electrical grid. In this paper, authors are interested to the behavior of wind energy source coupled to the electrical grid: After a brief review of the modeling of the different parts of the wind energy generator. Different wind generator topologies and machines are discussed and a model of a doubly-fed induction generator connected to the grid is used for simulation purposes under Matlab-Simulink. This paper analyzes the influence of the disruptions of grid (voltage drop, phases fault) as well as the influence of the wind variations (weak and middle).
Research Interests:
Research Interests:
... Energy Management of a Fuel cell / SuperCapacitor / Battery Power Source for Electric Vehicular applications Majid Zandi, Alireza Payman, Jean-Philippe Martin, Serge Pierfederici, Bernard Davat, Member, IEEE, and Farid Meibody-Tabar ...
Research Interests: Engineering, Electrical Engineering, Computer Science, Fuzzy Logic Control, Fuel Cells, and 15 moreFuel Cell, Fuzzy Control, Control system, Energy Management, Automotive Engineering, Hybrid Vehicle, Energy Storage, High Power, Control Strategy, Power Converter, Interconnection, Load Flow, Control Algorithm, Power Density, and Difference Operator
: The transfer of the power from the PV generator to the load is not always optimal. The operating point of the characteristic of the said generator is strongly linked to the temperature variations, the solar irradiation and the load. In... more
: The transfer of the power from the PV generator to the load is not always optimal. The operating point of the characteristic of the said generator is strongly linked to the temperature variations, the solar irradiation and the load. In order for the module to provide its maximum available power, it’s necessary to permanently adapt the load with the photovoltaic generator. This adaptation can be carried out by inserting a DC-DC converter (boost) controlled by a “Maximum Power Point Tracking” (MPPT). The work is a comparative study of the power maximization methods incremental conductance, Hill climbing and perturbation and observation. Matlab is used to implement modeling and simulation tasks and to compare the efficiency and accuracy of execution for the selected MPPT methods. The simulation results for operating characteristics I-V and P-V for various cell temperature and solar irradiation closely matched manufacturer data sheet of the solar panel. Also, the algorithms described in this work have a considerable higher precision and it can be concluded that the output power of the PV module for the Incremental Conductance method is comparatively greater than the P&O and Hill Climbing method in a different conditions.