Power
Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/3079
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Item Grid connected solar water-pumping system based on sensorless PMSM drive(2022) Teniba, Abdelmoumin; Nouicer, Sohaib; Ammar, Abdelkarim (Supervisor)This thesis deals with an effective power transfer scheme between the solar photovoltaic (PV) array and single or three-phase grid, feeding permanent-magnet synchronous motor (PMSM) drive applied to a water-pumping system (WPS). This system enables a consumer to operate the water pump at its full capacity for 24 hours regardless of the climatic condition and to feed a single or three-phase utility grid when water pumping is not required. The full utilization of a PV array and motor pump is made possible, in addition to enhancing the reliability of the pumping system. A voltage source converter (VSC) with a unit vector template generation technique accomplishes a bidirectional power flow control between the grid and the dc bus of the voltage source inverter (VSI), which feeds a (PMSM) motor. A sensorless MRAS-based estimator with field-oriented control (FOC) is used to drive the PMSM coupled to the water pump. Under variable isolation, an intermediate stage boost converter is used for extracting optimum power from a solar PV array. The duty ratio for the maximum power point (MPP) operation is generated using Perturb and Observe (P&O) technique. The utility single-phase grid in conjunction with a PV array fed PMSM coupled water pump ensures bidirectional power flow control based on the unit vector template (UVT) technique, however, in three-phase utility grid a voltage-oriented control (VOC) is used to manage the power flow in the system. The Fast Fourier Transform (FFT) analysis is done on the grid current to check that the criteria imposed by the IEEE-519 standard are met, and total harmonic distortion is within the allowed range.Item PV solar system design and installation for agriculture application: a case study of a poultry farm in douar frikat Ain Oulmene Setif, Algeria(2020) Djoudi, Abdelfatah; Ammar, Abdelkarim (Supervisor)This project presents different technical approaches for energy conservation in the egg production farms. The main approach was first to evaluate the quantitative energy requirements through held interviews, then using Simulink and DIALux, series of simulations and calculations were conducted in order to seek for the most efficient light bulb and how many of them to be installed. Furthermore, an application named the Light Cost Calculator using MATLAB app-designer were developed to estimate the amount of saved money in case of using the suggested light bulb over the actual installed ones. It was found that installing thirty-five 5 watts, 470 lumens classic LED bulbs is much more efficient and super economical compared to the actual 40 watts incandescent bulbs. Afterwards, the intension was to seek for more energy conservation options, so knowing that the cooling and ventilation system represents 25 percent from the overall energy usage, an application called the Fan Selector using app-designer were developed to seek for more efficient electric fans. The possibility of using BLDC fans were also investigated. The obtained feedback from the Fan Selector application pointed out that using four BLDC fans is at least twice efficient than using normal AC fans in a farm of 10000 hens with 1.5Kg each, in average. The application also revealed that a considerable amount of money will be saved when using these BLDC fans. The last phase was the integration of photovoltaic solar system in the egg production farm. The proposed system is a standalone 12 kW peak system. It is equipped with battery banks of 1500 Ah, eight strings of six modules connected in series in conjunction with two three phase string inverters. This thesis aims to combine all the previous strategies staring from replacing the traditional incandescent bulbs, seeking for the most electric fans and eventually investing in solar energy to minimize the electricity usage and therefore maximize the profits.