Dissertations / Theses on the topic 'Regulation puissance'
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Rios, Mario Alberto. "Modélisation pour analyses dynamiques des réseaux électriques avec compensateurs de puissance réactive-SVC." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0099.
Full textThis thesis studies the modeling and analysis of power System containing static VAR compensators (SVC). Low-order models, calculated by Hankel singular-value truncation réduction and N4Sid dynamic identification, provide the foundation for the modeling and analysis techniques. For cases where many SVCs or FACTS (Flexible AC Transmission Systems) devices are installed in a power System, a new subsystem structure based on thèse low-order modeling techniques has been developed. The proposed low-order models allow the computation of low-order LQG-type (Linear Quadratic Gaussian Regulator) control laws, as well as low-order robust controls, which provide a better performance relative to traditional SVC controls (proportional type). Using the subsystem structure formulated in this thesis, methods for calculating decentralized controllers for power Systems hâve been conceived. In addition, through the use of structured singular values, a new robustness analysis technique has been developed which allows the détermination of stability boundaries through the calculation of closed-loop transfer functions. The theoretical approaches in this work hâve been applied to a test power system containing 11 nodes, as well as a larger 173-node test system
Gorisse, Jean. "Regulation of power amplifiers under VSWR conditions in CMOS 65nm for 60GHz WLAN applications." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2010. http://tel.archives-ouvertes.fr/tel-00563235.
Full textChapuis, Cédric. "Architecture et contrôle du patinage d'un véhicule mono et multi-source de puissance." Thesis, Lyon, INSA, 2012. http://www.theses.fr/2012ISAL0104/document.
Full textThe technical progress made during last years in the battery field and the environmental standards hardening lead to an increased interest in hybrid and electric vehicles. The possibility to use several power sources inside a vehicle leads to question the traditional vehicle architectures and to study multi-power sources architectures. After a state of the art on architectures and torque transmission systems, the VELROUE project's prototype is presented. This prototype is later used as a validation platform. Then, the rear wheels slipping control of the VELROUE vehicle which is equipped with an internal combustion engine on the front axle and with two electric motors connected to the rear wheels is studied. Next, different vehicle models are described to analyze energy transfers inside the system using Bond Graph, to synthesize anti-slipping control laws and to simulate the vehicle behavior in order to validate the anti-slipping functions (ASR). A first PID-like controller is initially introduced to serve as reference. The main contribution of this thesis deals with the synthesis and implementation of nonlinear controls either using linearizing feedback, or based on the flatness theory. The synthesis controls models come from classical hypothesis: longitudinal and vertical dynamics and pitch on a double bicycle model. A control strategy is also developed to assure driver's security, to reduce material needs and to enhance the driver approval. Finally, the nonlinear controls developed here are simulated and then experimentally validated on the VELROUE vehicle. A comparison of these commands is performed according to energy, performance, complexity and cost criteria. These control laws developed for ASR are extended to regenerative braking phases (MSR), which is also an originality of this work
Igbonacho, Bici Chinauyi Junior. "Génération de molécules de solitons, régulation de puissance, régénération et sculpture des profils d'impulsion au sein d'un laser à fibre multifonction." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCK024/document.
Full textThe work of this thesis strives to provide a solution to the persistent problem of poverty of mode-locked fiber lasers, in terms of functionality and flexibility. The thesis proposes a fiber-laser cavity having the specificity of being multifunctional. The cavity is equipped with tunable components, which provide the flexibility to realize functions ranging from the generation of pulses with complex profiles (solitons, bi-solitons, tri-solitons, etc.) up to the carving of pulse profiles, passing through the regulation of peak powers, and the regeneration of severely degraded intensity profiles. The laser cavity that we propose has the specificity of being controlled by a key component, which is a multifunctional nonlinear optical loop mirror (NOLM). We have designed this NOLM by making structural modifications in the usual architecture of this device, and by adding to it: a dispersion compensating fiber, a bandpass filter with tunable bandwidth, and an amplifier (preceded by a gain flattening filter, as needed) with tunable gain. These two parameters make it possible to adjust its transfer function, and thus to increase its functionalities and its flexibility. Thus, in addition to its role as a trigger for mode locking, this NOLM performs essential optical functions such as the regeneration of strongly degraded intensity profiles; which contributes to strengthening the stability of the laser.We also show the possibility of regulating the pulse peak power by locking it around a predefined value. Finally, we show that the multifunction laser offers the possibility to carve pulse profiles, that is, to generate pulses endowed with a peak power and a temporal width set in advance through an appropriate adjustment of the NOLM control parameters. The applications targeted by this multifunction laser are those requiring pulses with finely tunable peak power and temporal width. These activities, include the pulse reshaping in Telecoms, operations of compression or stretching of pulse profiles, optical component diagnostics, and non-destructive control of transmission lines
Alkhatib, Hasan. "ETUDE DE LA STABILITE AUX PETITES PERTURBATIONS DANS LES GRANDS RESEAUX ELECTRIQUES : OPTIMISATION DE LA REGULATION PAR UNE METHODE METAHEURISTIQUE." Phd thesis, Université Paul Cézanne - Aix-Marseille III, 2008. http://tel.archives-ouvertes.fr/tel-00408160.
Full textEnjalbert, Gérard. "Développement d'un outil de conception assistée par ordinateur : le logiciel circuit." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0095.
Full textMazari, Benyounès. "Étude et réalisation de la commande numérique d'un cycloconvertisseur à trente six thyristors." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL135N.
Full textAbib, Sabrina. "Fonctions de gouvernement et enjeux éthiques des normes tirées de la référence aux marchés financiers." Thesis, Paris 1, 2018. http://www.theses.fr/2018PA01H212/document.
Full textWe suggest in this thesis to examine the State’s modalities of action in terms of framing and control of the economic and financial sphere. This study leads us to study the concept of regulation through an epistemological, legal, economic and philosophical approach. De facto, the analysis of the functions of government proves to be essential insofar as we observe the evolution of the State’s regulatory praxis with regard to the economic doctrines and the legal and operational architecture of the institutions of regulation. The functions of securization of the economic sphere shed lights on the complex space between the regulator and the regulated entity. In this context, the study of ethical issues with the importance of the concept of contextualization in terms of the moralization of financial markets imply the confrontation of the regulatory praxis with key concepts as governmentality, categorization and performativity. Successively, guardian, regulator and strategist, the State is inserted, today in the digital age, in a fragmented and global world. Understanding the phenomenon of “co-regulation” and “inter-regulation” requires, first of all, putting into perspective the notion of responsibility and independence of actors and institutions. In this reflection, the apprehension of risk by public authorities underlines some limits both in risk models and in models of regulation
Zein, El Din Ashraf. "Comparaison d'architecture pour la commande des machines électriques." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL034N.
Full textRioual, Pascal. "Modélisation et commande d'un redresseur à MLI alimenté par un réseau déséquilibré." Cachan, Ecole normale supérieure, 1993. http://www.theses.fr/1993DENS0008.
Full textKheloui, Abdelaziz. "Contribution à la modélisation et à la commande d'ensembles convertisseurs statiques - machines synchrones de fortes puissances." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL142N.
Full textSouvignet, Thomas. "Contribution to the design of switched-capacitor voltage regulators in 28nm FDSOI CMOS." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0043/document.
Full textMobile and multimedia devices offer more innovations and enhancements to satisfy user requirements. Chip manufacturers thus propose high performances SoC to address these needs. Unfortunately the growth in digital resources inevitably increases the power consumption while battery life-time does not rise as fast. Aggressive power management techniques such as dynamic voltage and frequency scaling have been introduced in order to keep competitive and relevant solutions. Nonetheless continuing in this direction involves more disruptive solutions to meet space and cost constraints. Fully integrated power supply is a promising solution. Switched-capacitor DC-DC converters seem to be a suitable candidate to keep compatibility with the manufacturing process of digital SoCs. This thesis focuses on the design of an embedded power supply architecture using switched-capacitor DC-DC converters.Addressing a large range of output power with significant efficiency leads to consider a multi-ratio power stage. With respect to the typical digital SoC, the input voltage is 1.8 V and the converter is specified to deliver an output voltage in the 0.3-1.2 V range. The reference voltage is varying according to typical DVFS requirements. A modular architecture accommodates the digital design flow where the flying capacitors are situated above the digital block to supply and the power switches are located as an external ring. Such an architecture offers high flexibility. Interleaving strategy is considered to mitigate the output voltage ripple. Such a converter admits the switching frequency as a control variable and linear regulation and hysteretic control are analyzed. A prototype has been fabricated in 28nm FDSOI technology by STMicroelectronics. A power density of 310 mW/mm2 is achieved at 72.5% peak efficiency with a silicon area penalty of 11.5% of the digital block area. The successful design methodology has been also applied to the design of a negative SC converter for body-biasing purpose in FDSOI. Simulation results demonstrate a strong interest for low power application
Goavec, Anthony. "Conception d'un estimateur intégré en technologie CMOS de la densité spectrale de puissance pour l’auto-calibration des émetteurs radio impulsionnels ultra-large bande." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0052/document.
Full textThis thesis focusses on the power emission constraints defined by regulations and standards for every kinds of ultra-wide band impulse radio transmitters. In fact, these power emission constraints have to be respected all along the device life. Also, an integrated sensor able to extract the essential information for an on-chip estimation of the power spectral density has been realized. Then, an embedded algorithm is added to the system and detects if a power limit is broken. If necessary, it acts on the transmitter to solve the problem. In the first chapter, a large variety of power constraints shapes and several architectures of impulse generators have been observed and studied. Therefore, the aim of this thesis is to realise a calibration system which would be universal to all impulse radio transmitters. After its extraction at the output of the transmitter, information have to be downconverted in order to reduce the constraints on conversion stage but without using a local oscillator and a mixer. A model for the impulse signal based on the instantaneous envelop and on the instantaneous frequency has been proposed in the second chapter. A new calibration method based on these two signals is also presented. The last chapter concentrates on detailing the extraction of the instantaneous envelop and the instantaneous frequency. The design of the electronic devices essential to this extraction is presented and a chip has been realised and the viability of the solution shown
Praing, Chulasa. "Stabilité d'un réseau de transport avec pôles de production et de consommation éloignés en période de forte croissance." Phd thesis, Grenoble INPG, 2000. http://www.theses.fr/2000INPG0106.
Full textToday's opération of large povver Systems is continuously increasing in complexity due to size growth, to high ievel of interconnections, to the use of new techniques, and to economical, political and ecological constraints. Thèse factors lead the operators to operate thèse Systems close to their limit of stability and security. The risk of instability is increasing in case of a strongïy growing power consumption. To avoid this phenomenon, the study of stability (voltage and rotor angle) is proposed in this thesis. This study is a very signtficant mean to détermine available transfer capability (ATC) in deregulated envïronment. The work of this thesis has been conducted vvith the use of the static analysis techniques and dynamic simulation vvith Matlab and Eurostag software. Thèse techniques are applied mainly in the Vietnam povver System {220 and 500 kV), the BPA test System 500 kV in USA and the Massif Central power System in France. In this work, several static analysis techniques are presented in order to estimate the stability margin and to identify the entical areas for the voltage stability. The results obtained are in conformity with the real exploitation of Vietnam povver system. Then, dynamic simulation allows studying ail the behaviors of the system for any opérations. With thèse simulations, the response of each variable of the éléments of the system is observed; the results of measurements and simulations are compared: the components most sensitive to the voltage stability are identified as well as the origins of instability (voltage or rotor angle). In the end, the eombination between the static analysis and dynamic simulation are carried out in order to take advantage from the two analyses. Under certain critical conditions, the povver system can be affected by a phenomenon of instability. This phenomenon can be avoided by applying préventive and corrective measures. In this thesis, three methods of préventive measures are presented: two classical methods and a new method. They are used to decrease the risks of voltage instability in the steady state before or after a disturbance, by using the optimal power flow techniques (OPF). A new method of corrective measure is also presented in this thesis, it is used to avoid the voltage instability by using the sensitivity of the active and reactive power to the voltage. The critical nodes, where the load must be shed, are determined by the static analysis. In the end, several solutions, to improve stability (voltage and rotor angle) and to avoid instability. Are given by using modem reguîatory devices (FACTS, load compensation, PSS)
Toni, Kotchikpa Arnaud. "Conception et intégration d'un convertisseur buck en technologie 28 nm CMOS orientée plateformes mobiles." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI049.
Full textThis thesis work consists into the design of a 3 states buck converter targeting the improvement of dynamic regulation of microprocessors supplies. The topology of the converter is, at first, implemented in IBMCMOS 180 nm technology to validate the transient performances of the3 states regulator. The prototype in 180 nm, uses an input voltage of 3.6V and outputs a voltage in the range of 0.8V to 2V. Its response to load transients shows about 1% of undershoot and 2 % of overshoot, proving a good dynamic behavior for a simple structure compared to state of the art.The 3 states converter is then integrated in 28 nm CMOS HPM (technologymostly used for microprocessors desgn). The experimental results on the prototype confirm the performances in terms of energy and area savings, aswell as dynamic response. The chip delivers 0.5V to 1.2V from a 1.8V supply,and shows a 90% peak efficiency. The measurements of dynamic regulation show less than 5% of noise on the processor supply and 10 mV/ns outputvoltage switching for DVFS purpose