Literatura científica selecionada sobre o tema "Générateurs photovoltaïques – Qualité – Contrôle"
Crie uma referência precisa em APA, MLA, Chicago, Harvard, e outros estilos
Consulte a lista de atuais artigos, livros, teses, anais de congressos e outras fontes científicas relevantes para o tema "Générateurs photovoltaïques – Qualité – Contrôle".
Ao lado de cada fonte na lista de referências, há um botão "Adicionar à bibliografia". Clique e geraremos automaticamente a citação bibliográfica do trabalho escolhido no estilo de citação de que você precisa: APA, MLA, Harvard, Chicago, Vancouver, etc.
Você também pode baixar o texto completo da publicação científica em formato .pdf e ler o resumo do trabalho online se estiver presente nos metadados.
Artigos de revistas sobre o assunto "Générateurs photovoltaïques – Qualité – Contrôle"
Hassaine, Linda, Issam Abadlia, Antar Beddar, Fateh Abdoune e Mohamed Rida Bengourina. "Contrôle Avancé des Onduleurs Photovoltaïques Connectés au Réseau". Journal of Renewable Energies 24, n.º 2 (31 de dezembro de 2021): 181–201. http://dx.doi.org/10.54966/jreen.v24i2.980.
Texto completo da fonteRedjem, Radia, Khalil Nabti e Aissa Bouzid. "Amélioration de la qualité de l’énergie électrique d’une chaîne de production hybride photovoltaïque éolienne connectée à un site isolé". Journal of Renewable Energies 20, n.º 4 (31 de dezembro de 2017): 599–613. http://dx.doi.org/10.54966/jreen.v20i4.653.
Texto completo da fonteGEAY, Y., G. RENAND, J. ROBELIN e C. VALIN. "Possibilités d’améliorer la productivité et la qualité des produits de la filière viande". INRAE Productions Animales 4, n.º 1 (2 de fevereiro de 1991): 41–48. http://dx.doi.org/10.20870/productions-animales.1991.4.1.4316.
Texto completo da fonteDjerroud, Salima, e Amine Boudghene Stambouli. "Mise au point d’un dispositif automatique de caractérisation du module solaire à base d’un microcontrôleur PIC16F877 Application au module solaire hybride en a-Si:H". Journal of Renewable Energies 13, n.º 4 (25 de outubro de 2023). http://dx.doi.org/10.54966/jreen.v13i4.227.
Texto completo da fonteHassan Ali, Mohamed, e Sofiane Haddad. "Stratégie pour la maintenance prévisionnelle des systèmes photovoltaïques". Journal of Renewable Energies 23, n.º 1 (6 de novembro de 2020). http://dx.doi.org/10.54966/jreen.v23i1.33.
Texto completo da fonteTeses / dissertações sobre o assunto "Générateurs photovoltaïques – Qualité – Contrôle"
Wang, Xin. "Online health monitoring of photovoltaic panels by converter-based impedance spectroscopy". Electronic Thesis or Diss., Université de Lorraine, 2024. https://docnum.univ-lorraine.fr/ulprive/DDOC_T_2024_0039_WANG.pdf.
Texto completo da fonteTo meet the world's growing energy needs and with a view to sustainable development, the use of solar energy is leading a significant increase in the installation of photovoltaic (PV) panels, enabling the production of clean and renewable electricity. However, the PV panels are susceptible to faults during operating. These faults can result in power losses, low efficiency, system instability, even pose a risk of security. Health monitoring can mitigate these issues and improve the overall operating reliability and efficiency of PV panels. Among existing health monitoring tools for PV panels, impedance spectroscopy (IS) provides a powerful, non-destructive way to acquire PV panels' internal impedance over a wide frequency range. Compared with specific workstation-based IS, converter-based IS can help reduce overall system costs and facilitate online applications, as no additional equipment is required. However, the control strategy of the power converter needs to be specifically designed. Firstly, the bandwidth of the converter will limit the maximum frequency of the perturbation signal. Obtaining a complete IS spectrum with sufficient accuracy can thus be challenging. Secondly, to ensure a quasi-maximum output power of PV panels even during IS implementation, a cooperative control scheme between maximum power point tracking (MPPT) and IS modes should be considered. The major objectives of this research are twofold: (1) to propose a systematic design guideline for control strategies of converter-based IS implementation; (2) to establish an appropriate AC equivalent circuit model (AC-ECM) for PV panels and extract valuable health indicators for online health monitoring of PV panels. In one aspect, a bi-level control strategy of the power converter including an upper-level and a lower-level control is proposed. The upper-level control achieves the cooperative control of different operating modes, including MPPT, injection point tracking (IPT) and IS modes. The lower-level control includes the separate control of each mode. Particularly, for the IS mode, both open-loop control and closed-loop control have been systematically studied and compared. Under open-loop control, an analysis of the intrinsic resonance of the converter and the frequency limitation of the perturbation signal is performed. Furthermore, an adaptive configuration method for the amplitude of the AC duty cycle is proposed to eliminate the influence of the resonance and enhance the accuracy of IS measurement. Under closed-loop control, based on three commonly used compensation controllers, two control methods, named unified control and separated control, are designed and compared. In the unified control, a single proportional-integral (PI) controller controls the DC and AC components together to meet the control objectives. Meanwhile, in the separated control, a segmented lower pass filter (LPF) with a variable cut-off frequency is designed to effectively separate the DC component of the PV panel current from the AC perturbation signal. A proportional (P) and a quasi-proportional resonant (QPR) are further applied separately to control the AC component. In the other aspect, based on the acquired IS measurements, a simplified AC-ECM of the PV panel is proposed. This AC-ECM offers a fitting approach for the incomplete spectrum obtained through converter-based IS. Additionally, four health features are extracted and defined for monitoring the health states of the PV panel under various operating conditions. Finally, an experimental platform has been developed for online IS implementation. An experimental study has been conducted to verify that under the proposed control strategies, reliable and accurate IS measurements can be achieved. Under various operating conditions, the effectiveness of the online IS monitoring method based on the extracted features of the PV panel is verified as well
Ul, Abdin Zain. "Modélisation et contrôle des panneaux photovoltaïques hybrides". Electronic Thesis or Diss., Amiens, 2022. http://www.theses.fr/2022AMIE0057.
Texto completo da fonteThe standard of living has risen the global energy demand and fossil fuel energy usage is considered the main factor for the rise in global temperature. Renewable energy has been one of the main areas of interest by governments of nearly all countries. Solar energy is clean and the most abundant energy source available around the globe and a photovoltaic thermal (PV-T) system uses solar energy and provides heat and low carbon electricity at the same time. Different heat extraction mediums, hybrid design configurations and the main applications of PV-T collectors are addressed to highlight their feasibility and usefulness. The focus of this thesis work is the modeling, design, optimization, and control of a hybrid PV-T collector. The modeling of the different configurations of hybrid PV-T collectors was conducted and studied in detail. It requires a thorough study of heat transfer between the collector's components and the proposed approach is based on a bond graph technique which is a generic and general tool to represent thermal transfers. A real engineering application, a solar dryer based on the PV-T collector and waste heat recovery along with air recirculation is also investigated. The thesis presents a new design of a PV-T collector that incorporates a storage tank to store heat as well as an electrical resistance to increase thermal production when necessary. Computational fluid dynamics (CFD) simulation of a system and the subsequent validation of the proposed design are then presented. This study also focuses on assessing the influence of internal geometrical parameters. The achieved results permit to analyze the usefulness of the proposed design and validate the viability. Optimization of such systems is highly important in order to get maximum output that is the most energy with lower cost and this requires analyzing the effect of various parameters. The temperature range of the collector must be controlled and the developed models are applied for the purpose of control and observation. The output temperature was controlled using a variety of controllers that are; a simple PI controller, H-infinity controller and sliding mode controller (SMC). Moreover, a multiple model is constructed and an observer is designed for estimating the states of the multiple model. A state observer with an unknown input is also developed, an improvement in the design. It was shown that the designed controllers track the desired set points and the proposed observers estimate the states of the collector, thus displaying the effectiveness. Finally, the hybrid PV-T collector was modeled by using artificial neural network (ANN) and also used for the purpose of control
Marion, Karine. "Evaluation des procédés actuels de lutte contre le biofilm dans les générateurs d'hémodialyse". Paris 5, 2002. http://www.theses.fr/2002PA05P619.
Texto completo da fonteBiofilms that develop on dialysis systems release endotoxins that are responsible for inflammatory diseases. The efficacy of the various "anti-biofilm" procedures proposed by the manufacturers have been assessed to help the users to make a choice. First of all, a biofilm analysis protocol was set-up, based on three main parameters : the coverage, the culturable cells and the endotoxin level. Tubing samples were removed from dialysis centers and analyzed. The highest contamination was observed on the samples coming from the connection between the water distribution loop and the dialysis machine; the cleanest samples had been disinfected by citric acid followed by autoclave. In vitro studies showed that no tested procedure was able to lead to a complete biofilm removal. Procedures using a hot disinfectant promote biofilm growth by "baking" the biofilm on the surface. The best treatments to be recommended are either the combination between bleach and a descaling agent, or the use of a Miroclav® machine
Narat, Pierre. "Contrôle et observation d'états d'une machine asynchrone associée à un convertisseur statique : application à un groupe moto-pompe alimentée par un générateur photo-voltai͏̈que". Toulouse, INPT, 1987. http://www.theses.fr/1987INPT008H.
Texto completo da fonteNehme, Bechara Fadi. "Augmentation de la durée de vie des panneaux photovoltaïques par surveillance et contrôle". Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4324.
Texto completo da fonteConversion efficiency of solar cells is now on average reaching 15%. Despite these acceptable yields, it remains important to raise a technological limitation: the improvement of the life span of photovoltaic modules. Effects are observed during the use of these components in intermittent weather: rain, snow, molds, dust UV rays, shock, corrosion etc... rapid losses of optoelectronic properties depending on the usage conditions. The objective of this thesis is in twofold: -to try to improve the lifespan of solar panels, and -to improve the reliability of the photovoltaic modules by decreasing their degradation rate. Our approach begins by taking into account the effects of aging of photovoltaic modules whose degradation is related to temperature, moisture, Ultra violet light, cracks etc... Faults are analyzed and studied to understand the impact and the importance of each parameter in the different modes of degradation to develop simulation models that take into account external environmental conditions. Control algorithms have been developed for a best utilization avoiding defects and allowing photovoltaic modules to operate in optimal conditions for mitigation of degradation processes
Laverdure, Nicolas. "Sur l'intégration des générateurs éoliens dans les réseaux faibles ou insulaires". Phd thesis, Grenoble INPG, 2005. http://tel.archives-ouvertes.fr/tel-00170128.
Texto completo da fonted'électricité. Du fait des caractéristiques intrinsèques de cette source d'énergie (intermittence
de la source primaire, technologies diverses des générateurs, présence d'interfaces
d'électronique de puissance), l'intégration des générateurs éoliens dans les réseaux de
distribution pose de réels problèmes en terme d'impacts. Dans la mesure où désormais les
normes de raccordement ont été modifiées, il est apparu nécessaire d'étudier si les différentes
technologies d'éoliennes présentes sur le marché étaient en capacité de répondre ou non à ces
nouvelles contraintes. Ce travail de thèse propose ainsi une comparaison des structures
éoliennes existantes à partir de trois thèmes – qualité d'énergie, réaction face aux creux de
tension, participation aux services-système –, et analyse les possibilités offertes en terme de
contrôle par les structures à vitesse variable.
Saez, de ibarra martinez de contrasta Andoni. "Dimensionnement et contrôle-commande optimisé des systèmes de stockage énergétique pour la participation au marché de l'électricité des parcs photovoltaïques intelligents". Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT057/document.
Texto completo da fonteThe present PhD deals with the integration of intelligent photovoltaic (IPV) power plants in the electricity markets in an environment subject to free competition. The IPV power plants are those that include energy storage systems to reduce the variability and to provide the entire group a controllability increase. These technical objectives are obtained thanks to the bidirectional exchanging and storing capability that the storage system contributes to, in this case, battery energy storage system (BESS). In order to obtain the maximum profitability of the BESS, the sizing must be optimized together with the control strategy that the BESS will be operated with. In the present PhD, once the most performing battery energy storage technology has been selected, the lithium-ion technology, an innovative IPV power plant electricity market participation process is proposed which optimizes both the sizing and the energy management strategy in the same optimization step. This optimization process together with the electricity market participation has been applied in a real case study, confirming that this procedure permits to maximize the economic profitability of this type of generation
Savalle-Gloire, Noé. "Effet du microclimat lié à l'ombrage temporaire sur la physiologie et la croissance, le rendement et la qualité des fruits de la tomate (Solanum lycopersicum L. H. Karst)". Electronic Thesis or Diss., Avignon, 2024. http://www.theses.fr/2024AVIG0624.
Texto completo da fonteDue to climate change, farming practices must be adapted to protect crops from increased heat and water stress. Additionally, limiting greenhouse gas emissions requires the development of renewable energies. However, in some countries, conflicts of use arise when a large part of the land is already dedicated to agriculture. Agrivoltaics is the practice of installing photovoltaic panels on cultivated land to produce renewable electricity while also protecting crops from heatwaves and drought, and thus it addresses both these issues. This practice could be particularly useful for tomato greenhouses, where shading is already used to protect the plants and where a structure capable of supporting the panels is already in place. The use of mobile panels (dynamic agrivoltaics) makes it possible to adjust shading to the needs of the plant. However, this practice causes temporary shading, the effect of which on crops is not yet fully understood, making it difficult to optimise their stirring policy and maximise crop yields and quality. This thesis examines the impact of shading on the vegetative growth, physiology, yield, andquality of tomato plant. It studies the effects of shading applied at different spatial and temporal scales, ranging from the organ to the plant and varying in intensity on an hourly or seasonal basis. The experiments were conducted in an agrivoltaic greenhouse in Alénya (Pyrénées-Orientales, France) in 2021 and 2022. Various shading treatments were investigated, depending on the daily pattern of plant shading (late morning, early morning, late afternoon, and afternoon) compared to a control grown in a similar greenhouse without photovoltaic panels. The experimental data were used to adapt and calibrate a tomato structure-function model (FSPM) developed in the PSH laboratory, which made it possible to analyse the effect of shading at the whole plant level
Attemene, N'guessan Stéphane. "Optimisation temps réel des flux énergétiques au sein d'un système multi-sources multi-charges basé sur les énergies d'origine renouvelable". Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCD044.
Texto completo da fonteThis work is focused on the real-time optimal control of a stand-alone system consisting of a photovoltaic generator, a PEM fuel cell, an alkaline electrolyzer, a battery and supercapacitor pack for a stationary application. The coupling of these different sources aims to improve performance, the availability of the resulting electrical grid, the supply of electricity over much longer periods, and especially the satisfaction of the load by using each source in a controlled way.First, a thorough study of the feasibility of the system from a technical, energetic, economic and environmental point of view is carried out. As a result, an optimal sizing method is proposed. A sensitivity analysis to evaluate the influence of subsystems cost and the size respectively on the overall energy cost and the equivalent CO2 emitted by the system is also discussed. Then, a model enabling easy scaling of components to achieve the capacity required for the system is developped. The global model of the system is obtained by exploiting the modularity of the formalism used for modeling (the Energetic Macroscopic Representation). Finally, an energy management method based on Energy consumption Minimization Strategy (ECMS) is proposed. A comparative study of the results obtained by the ECMS and those obtained by dynamic programming has enabled the validation of the optimal control strategy developed
Compaore, Wendpuire Ousmane. "Aide à la décision pour le diagnostic des défauts pour une maintenance proactive dans un générateur photovoltaïque". Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMR095.
Texto completo da fonteThe loss of power of a photovoltaic generator (PVG) is undoubtedly due to the appearance of a certain number of anomalies linked to manufacturing, production or the environment and causing failures in its proper functioning. From a realistic model, quite close to real operation and able to take into account the avalanche effect of a PN junction transmitted to the entire PVG, we have sufficiently shown the loss of performance of a PV generator and the need to have a diagnostic method for maintenance assistance in order not to suffer the effects of faults.Two diagnostic methods were applied to this PVG, one relating to the detection and localization of sensor faults, and the other to the detection and localization of system faults. The particular choice of these two diagnostic techniques, which do not target the same types of faults, lies in the complex nature of the model of the industrial process subjected to study. The performances obtained with the analytical redundancy relations (ARR), method based on the principle of parity space applied to the maximum operating point are very relevant. Using the artificial intelligence (AI), method based on the principle of artificial neural networks (ANN), we experimented with two classification methods for the detection and diagnosis of system faults. If detectability is proven with our different configurations without the possibility of locating the origin and the cause in the first part of the classification, we arrive thanks to a bundle of clues to locate the origin or the cause thanks to the classification for the diagnostic.The production of two real-time acquisition prototypes is based on the principle of the Industrial Internet of Things (IIoT). The first only allows the acquisition and saving of data on an SD card. The second, and more advanced prototype, allows real-time transmission via WiFi to a web server and aims to create a real-time monitoring platform in the long term. Both prototypes produce data that is used to power both diagnostic methods. The results obtained with real data are compatible with those obtained in the simulation phase. The conclusions of this diagnosis will enable greater efficiency in proactive maintenance operations