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Power electronics, which should be called “electronic energy conversion”, is now undergoing a major evolution. During these years, the size, weight and cost of converters have only decreased, largely due to advances in electronic switches. It is interesting to compare the various possibilities for achieving a converter. Some topologies will be more suited than others to a given specification. The...
In this paper, we analyze the performance of a photovoltaic array under shading faults. Actually, the solar power generation systems use the photovoltaic (PV) effect to transform solar energy into electrical energy. The performance of a (PV) array is affected by temperature, solar irradiance, shading, and array configuration. In this study and in order to optimize the performance of a PV system, it...
In this study, a model reference adaptive sliding mode speed controller (SM-MRAC) for a direct drive wind energy conversion chain is presented. The system model includes a wind turbine with horizontal axis driving a permanent magnet synchronous generator (PMSG) through a rectifier connected to the dc-bus. The designed SM-MRAC controller is compared with a conventional PI controller. The model and...
The Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most important power supplies. Maintaining a constant voltage in PEM fuel cells with the presence of inputs and load variations, has always attracted the attention of many researchers and many articles have been published on this issue. This paper presents modeling of a PEM fuel cell connected to DC/DC boost converter. Subsequently, proportional...
This work develops a solution for greenhouse climate control employing a comparison between two controllers, the Fuzzy FID and the classic FID Knowing that the greenhouse model has a high strong coupling, a feedback-feedforward linearisation and decoupling method employing measured disturbances is used. Those proposed controllers are designed Very carefully. The comparison between those two controllers...
This paper develops a grid voltage sensor-less control strategy of Voltage Source Inverter (VSI) used for photovoltaic application. Virtual-Flux (VF) estimator is investigated to estimate the three-phase grid voltages. A second order generalized integrator-quadrature signal generation SOGI-QSG and Frequency Loocked Loop FLL is achieved to ensure the grid synchronisation and to estimate the grid voltages...
In this paper, the model and the control of the direct-drive wind energy conversion system with permanent magnet synchronous generator PMSG are studied and implemented on MATLAB/ Simulink software. The model includes a wind turbine with horizontal axis driving PMSG through a power transmission device and debits through a rectifier connected to the dc-bus. A vector control strategy is applied. The...
Distributed power generation systems (DPGS) tend to increase their capacities of production of electricity. Multilevel converters are considered today among the most suitable topologies for DPGS connected medium voltage grids. On the other hand, Finite-Control-Set Model Predictive Control (FSC-MPC) has become in the last decade a promising control method thanks to its fast dynamic response and robustness...
This work develops a solution for greenhouse climate control employing a online PI tuned with PSO algorithm. Knowing that the greenhouse model has a high strong coupling and non-linearity, a feedback-feedforward linearisation and decoupling method employing measured disturbances is used. The present controller is made in terms of several performance criteria like settling time, peak overshoot, rise...
In the electrical vehicle, the double rotor motor DRM is used as an electrical variable transmission which eliminates the drawbacks of the mechanical gearbox. However, it major disadvantageous is related to the control algorithm. This is due to the coupled magnetic field between the wound rotor and the stator. In this paper, a mathematical decoupling algorithm is presented for applying the vector...
This paper handles with the artificial neural network-based fault detection and classification method for a photovoltaic (PV) system. In fact, the diagnosis of the PV plants is extremely required in order to maintain the optimum performance. Therefore, in this paper, we used the artificial neural network for the fault classification. The studied system composed of a PV array with the implementation...
A Super-Twisting Algorithm (STA) is proposed for the tracking control of a greenhouse system. This proposed technique, ensure that the occurrence of the sliding motion in finite time and the trajectory of the tracking error converge to the equilibrium point. Furthermore, High Sliding Mode is in the but to approximate the unknown nonlinear functions of the system model and moreover to approximate the...
The photovoltaic (PV) system productivity is a decisive factor. To achieve a high productivity, the system availability should be checked. So even under a faulty situation, the system should operate continuously. As a proposed solution, the fault tolerant control (FTC) is recommended. In advance of FTC strategy, the fault diagnosis should be achieved. This paper deals with the open circuit fault occurred...
In this work, we are providing details about experimental Electric Vehicle prototype. The goal is to build an All Electric power-train prototype with multi power sources input, and an open computer based setup to test new power management architecture introduced in our previous work. The electrical and mechanical features of the prototype are detailed. However, connectivity and networking layers for...
The non_uniformed Permanent magnet double rotor motor is used in wind power and hybrid vehicles as an electrical variable transmission. It is integrated radially by two permanent magnet machines (stator machine and double rotor machine). In this paper, the mathematical model is linearized and the generalized model predictive controller MPC is chosen here to control this motor type. In order to improve...
This paper presents a robust Sliding Mode Controller (SMC) for Proton Exchange Membrane Fuel Cell (PEMFC). The aim of this work is to keep the PEMFC working at its maximum operating power point in presence of inputs and load variations. However, due to the low output voltage of the PEMFC, DC/DC boost converter is used to obtain regulated high voltage DC. Therefore, the SMC is proposed to fix the fuel...
This work deals with the development of a tool for the control and management of a PV/Wind hybrid multi-source system with storage and applied to an agricultural farm on the one hand and on the development of an optimal control algorithm making it possible to extract the maximum power from the various sources and a control strategy for an optimal management of the energy flows within the system on...
Switch mode power converters are site of electromagnetic interference (EMI) issues that decrease their performances and deteriorate their electromagnetic environment and stability. Thereby electromagnetic compatibility (EMC) plays an increasingly important role to guarantee a correct functioning of DC/DC power converters and to ensure reliability throughout their lifetime. In this paper, the chaotic...
Proton Exchange Membrane fuel cell (PEMFC) is hybridized to share the current in a Hybrid Electrical Vehicle (HEV) power demand. The performance of the PEMFC model is analyzed for various loads connected nearer to the permanent magnet synchronous machine (PMSM), this latter is used to drive the air-compressor of a 6 kW fuel cell (EC) which will be beneficial for Electric Vehicle (EV) application....
This paper focuses on the control strategy for three-phase grid connected photovoltaic (PV) system using direct power control. It is based on an external control loop, carried out to regulate the dc link voltage, and two internal controls loop. These later are based on direct sliding mode controller, utilized to control the line current in variable reference frame. A second order generalized integrator...
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