Dissertations / Theses on the topic 'Puissance maximale'
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MORTELETTE, ALAIN. "Puissance maximale anaerobie." Lille 2, 1989. http://www.theses.fr/1989LIL2M002.
Full textDriss, Tarak. "Etude de la puissance maximale anaerobie chez l'homme." Paris 6, 1999. http://www.theses.fr/1999PA066164.
Full textBelzile, Patrick. "Diminution de la puissance maximale appelée d’un bâtiment institutionnel." Mémoire, École de technologie supérieure, 2012. http://espace.etsmtl.ca/1009/1/BELZILE_Patrick.pdf.
Full textVandewalle, Henry. "Puissance maximale anaérobie et relation "force-vitesse" sur bicyclette ergométrique." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37601712j.
Full textVandewalle, Henry. "Puissance maximale anaérobie et relation force-vitesse sur bicyclette ergométrique." Paris 11, 1986. http://www.theses.fr/1986PA112224.
Full textGuerroumi, Sid-Ali. "Élaboration et validation d'un test mesurant la puissance maximale aérobie." Thèse, Université du Québec à Trois-Rivières, 1993. http://depot-e.uqtr.ca/5423/1/000603621.pdf.
Full textBarbeau, Paule. "Markers of the erythropoietin, erythropoietin receptor and RAD genes and cardiorespiratory endurance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25376.pdf.
Full textPaquette, Myriam. "Caractérisation de l'oxygénation musculaire lors d'efforts en canoë-kayak et relation avec la performance." Doctoral thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/69444.
Full textPerformance in sprint canoe-kayak has been associated with maximal O2 uptake (VO2max), lactate threshold, as well as anaerobic fitness and muscle qualities. However, the physiological peculiarities of sprint canoe-kayak suggest that the peripheral component of the aerobic system, and more precisely the muscle O2 extraction capacity, is an important determinant of performance. A good understanding of the key performance indicators is crucial to validate training programs and tests used to monitor training adaptations in athletes. With the advent of portable and affordable near infrared spectroscopy devices, it is now possible to measure changes in muscle oxygenation (SmO2) in different active muscles during exercise. Thus, the goals of the four articles included in this thesis were to characterize the changes in muscle oxygenation during exercise and in response to different types of training in order to better understand the role of peripheral adaptations in sprint canoe-kayak performance and explore the effect of different types of training on these physiological parameters and on performance. Study 1, examining the association between muscle oxygenation parameters and 200m, 500m and 1000m performance in provincial to international level canoe-kayak athletes, concludes that maximal O2 extraction in the muscles studied is the best predictor of performance over all three distances, and suggests that O2 extraction is a better predictor of performance than VO2max in sprint canoe-kayak. In Study 2, the evaluation of the acute physiological response to various interval training sessions indicated that sprint interval training (SIT), compared to short interval training (HIIT), induces the lowest SmO2 levels and cumulates the longest time at low SmO2, potentially making it a stimulus of choice to generate muscle O2 extraction adaptations, and therefore improve performance in sprint canoe-kayak. Study 3 assessed changes in muscle oxygenation in response to a 3-week training camp in a group of elite athletes, to assess whether the training usually prescribed to kayakers elicits peripheral adaptations. After the training camp, the improvement in performance over 200m and 1000m was concomitant with reduced SmO2, suggesting an improvement in O2 extraction capacity. Finally, in the last study of this thesis, the effect of a SIT or HIIT program on muscle oxygenation parameters and on performance over 200m, 500m and 1000m was measured, in order to assess whether sessions generating low and sustained levels of SmO2 present an optimal stimulus for improving O2 extraction capacity. HIIT improved performance in all three time trials, while performance improvements were trivial after SIT. VO2max was unchanged after training, but the maximum deoxygenation achieved in the 1000m time trial was increased in response to both training types. In the 1000m, the increase in performance with training was associated with the increase in maximal deoxygenation in the latissimus dorsi and vastus lateralis muscles, especially in the HIIT group. While these results do not support the hypothesis that SIT would be a better stimulus than HIIT to induce peripheral adaptations, they do highlight the important contribution of peripheral adaptations to sprint kayaking performance. Thus, the results presented in this thesis allow for a better understanding of the physiological demand of sprint canoe-kayak and attest to the role of peripheral adaptations, and more specifically of the muscle O2 extraction capacity, as a physiological determinant of performance. They confirm that training is associated with increased O2 extraction capacity, and that the latter is associated with increased performance. Given these results, it becomes clear that the training of sprint canoe-kayak athletes should aim at optimizing peripheral adaptations. Measuring changes in muscle oxygenation during exercise during tests, training sessions and time trials can provide valuable information on the athlete's profile, help identify the physiological components to be optimized and assess the athlete's response to the training program, and would be a valuable tool to add to the monitoring performed with canoe-kayak athletes.
Attiogbe, Amévi Elvis. "Facteurs d'influence de la relation détente verticale - puissance maximale musculaire des membres inférieurs." Thesis, Paris 10, 2019. http://www.theses.fr/2019PA100170.
Full textThe present thesis fits on the border of muscle physiology and biomechanics. Three studies investigated the factors influencing the relationship between vertical jump (DV) and maximal power out on cycle ergometer (Pmax). Study A, conducted on 106 participants from two groups (volleyball players, VB, and physical education students (PES) without specific training in jumping or cycling exercises) including 67 Caucasian (C) 39 West African (WA) origins, showed significant effects of sports practice (VB>PES) and enthnicity (E) (WA>C) on countermovement jump with arm swing (CMJA). However, the difference in Pmax was not significant between groups. The CMJA-Pmax relationships were different in C and WA (P=0.003). Therefore, CMJA predicted from Pmax would be underestimated in WA. The same difference was observed for CMJA-PmaxArms relationship. Study B, conducted on 84 participants, showed E significant difference (WA>C) in DV on a force platform in squat jump (SJ), countermovement jump (CMJ), CMJA, CMJA-CMJ, CMJA/CMJ. The effect sizes of E were large for CMJA, CMJA-CMJ, CMJA/CMJ and medium for CMJ and SJ. E effect of countermovement jump (CMJ-SJ) was not significant. In study C, the effects of anthropometric factors [body height (BH), sitting height (SH), foot length (FL), leg length (LL), Body Weight (BW), BMI, Body fat (BF), BF/BW and Skelic (Sk=LL/SH) or Cormic (Co=SH/BH) indices], and E (C vs WA) on SJ, CMJ and CMJA)] have been measured on a force platform in 55 PES [32 Caucasians (group C) and 23 West-Africans (group WA)]. Only SH, Sk and Co were significantly different in C and WA. All DV performances were higher WA The ethnic difference in SH could partly explain the higher DV values in WA
Rouis, Majdi. "Etude de la relation détente verticale – puissance maximale sur ergocycle : effets de l’ethnicité." Paris 10, 2012. http://www.theses.fr/2012PA100017.
Full textThe purpose of the present thesis was to study the effects of the ethnic origins upon the relationship between vertical jump (VJ) and maximal power (Pmax) on a cycle ergometre. Study A showed that the mean value of VJ was higher in subjects with West-African origins (WAE) when compared with Caucasian subjects (CE). For a given value of Pmax, VJ was higher in WAE. The hypothesis of a low aptitude for cycling exercises in WAE has not been verified in study A which showed that Pmax was not lower in WAE when compared to CE. The lack of cycling practice often suggested in the literature was not confirmed by the results of a reliability study of VJ and Pmax which showed no training effect in WAE as well as CE. A socio-economical factor cannot explain the inter-ethnic difference in the relationship between Pmax and VJ. Indeed, the same difference in the Pmax-VJ relationship was observed for exercises performed with the arms (cranking exercises), for which a lower practice cannot be evoked for WAE. The hypothesis of differences in musculo-tendinous stiffness as an explanation of inter-ethnic differences in vertical jump was tested in study C which showed that the torque-stiffness depended on the level of VJ performance and the ethnic origins. Finally, we took advantage of the measurement of stiffness in subjects who performed maximal cycling exercise to study the relationship between stiffness and Pmax (study D). This last study showed a significant correlation between the musculo-tendinous stiffness of the triceps surae and Pmax, without an ethnic effect
Paquette, Myriam. "Effet comparé de l'entaînement par intervalles inframaximal et supramaximal sur les déterminants de la performance à vélo." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25474.
Full textHigh-intensity interval training (IT) is superior to continuous training for improving endurance performance. Inframaximal IT (performed at intensities below maximal aerobic power [MAP]) is widely used by endurance athletes, but supramaximal IT (performed at intensities above MAP) is also associated with improved endurance performance. By now, it is unkown which type of IT leads to the best performance outcomes. The purpose of this study was to assess the effects of supramaximal and inframaximal IT on key endurance performance determinants. After six weeks of training, despite a 47 % lower training volume, supramaximal IT led to an increase in maximal oxygen consumption (VO2max) similar to inframaximal IT. MAP was increased following inframaximal IT only, and only supramaximal IT increased anaerobic capacity.
Jaafar, Hamdi. "Approche intégrative de détermination de la puissance maximale sur ergocycle lors de sprints de courte durée." Thesis, Paris 10, 2015. http://www.theses.fr/2015PA100175/document.
Full textThe aim of the present work was to study, using an integrative approach, the effects of intrinsic and extrinsic factors that influence the mechanical and neuromuscular performances during sprint exercises on a cycle ergometer. The first study examined the effect of exercise and gender on the reliability of the mechanical measurements from the force-velocity tests. The results showed that the reliability of the force-velocity test was higher in men and lower limbs compared to women and upper limbs, respectively. The second study investigated the effect of two loads (8.7 and 11% of body mass, BM) on the reproducibility of mechanical power indices during a Wingate test. The results showed comparable reliability between the two loads. However, power output was significantly higher at 11% BM. The third study compared power indices computed from the force-velocity and Wingate tests among two groups of male subjects with different physical fitness. The results showed that the Wingate tests performed against non-optimal loads (8.7% BM) underestimated maximal power especially in powerful subjects. The fourth study investigated the effect of the emotional context on neuromuscular performance during repeated cycling sprints. The results revealed a positive effect of pleasant context on neuromuscular performance compared to the unpleasant context. These results suggest that extrinsic motivation affects via the emotional valence (pleasant-unpleasant) the performance during all-out exercises
Olivier, Charles. "Effet de pratique et fidélité test-retest de la capacité aérobie maximale des survivants d'un AVC en phase chronique avec déficits cognitifs." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/30083/30083.pdf.
Full textCallier, Jacqueline. "La décomposition acido-basique comme facteur limitant de l'exercice musculaire : effets d'une alcalinisation exogène sur la capacité d'endurance a puissance sub-maximale et maximale du sujet sportif." Paris 5, 1991. http://www.theses.fr/1991PA05S018.
Full textSECK, DJIBRIL. "Determination de la relation moment-vitesse et de la puissance maximale sur ergocycle au moyen d'un systeme informatise." Paris 6, 1996. http://www.theses.fr/1996PA066385.
Full textBouthillier, Sébastien. "Relations entre la maturité, la morphologie, la puissance anaérobie et la performance de jeunes nageurs et de jeunes nageuses." Sherbrooke : Université de Sherbrooke, 1997.
Find full textChelly, Mohamed Souhaiel. "Mesure de la puissance maximale des membres inférieurs chez l'homme : ses relations avec l'élasticité, le vieillissement et la performance." Saint-Etienne, 2000. http://www.theses.fr/2000STET001T.
Full textDemers, Claude. "Seuil anaérobie lactique d'athlètes d'élite en fauteuil roulant." Sherbrooke : Université de Sherbrooke, 1997.
Find full textRatel, Sébastien. "Evolution de la puissance maximale et equilibre acido-basique sanguin au cours d'un exercice intermittent bref et intense : influence de l'age et de la duree de recuperation (doctorat)." Clermont-Ferrand 1, 2001. http://www.theses.fr/2001CLF1MM21.
Full textArsac, Laurent. "Mécanique musculaire et contrôle neuromusculaire de la production de puissance au cours de l'exercice explosif chez l'homme." Saint-Etienne, 1995. http://www.theses.fr/1995STET006T.
Full textHertogh, Claude. "Exploration de la puissance mécanique maximale instantanée lors d'un exercice bref et intense : développement d'un outil informatique appliqué au terrain." Montpellier 1, 1993. http://www.theses.fr/1993MON1T032.
Full textDoré, Eric. "Evolution de la puissance maximale anaérobie dans une population non-sélectionnée de filles et garçons ages de 7 a 21 ans." Clermont-Ferrand 2, 1999. http://www.theses.fr/1999CLF20033.
Full textBillat, Véronique. "Puissance critique déterminée par la lactatémie en régime continu d'exercice musculaire pour la validation d'une méthode d'évaluation de la capacité maximale aérobie." Grenoble 1, 1988. http://www.theses.fr/1988GRE10140.
Full textBouhlel, Ezeddine. "Effets de la masse musculaire active et de l'hypoxie aiguë sur la consommation d'oxygène maximale chez l'homme." Paris 11, 1988. http://www.theses.fr/1988PA112392.
Full textPinot, Julien. "Etude de la puissance mécanique comme variable d'amélioration de la performance en cyclisme à travers l'interface homme-machine." Thesis, Besançon, 2014. http://www.theses.fr/2014BESA1007/document.
Full textThis thesis has been completed as part of a CIFRE agreement between the laboratory C3S(EA4660) and the Research and Development (R&D) department of the FDJ professionalcycling team. The various studies that we conducted centred on analysing sport performanceoptimisation in cyclists through a central variable: the mechanical power output (PO)developed during locomotion. There were two main areas of focus: 1) evaluation andmonitoring of physical potential, with the aim of improving the training process, and 2)optimisation of the human–machine interface via analysis of the materials and equipmentused by the FDJ team cyclists
Shraif, Mohamed Firas. "Optimisation et mesure de chaîne de conversion d'énergie photovoltaïque en énergie électrique." Toulouse 3, 2002. http://www.theses.fr/2002TOU30168.
Full textBrassard, Patrice. "Impact du diabète de type 2 sur la physiologie intégrée du système cardiorespiratoire à l'exercice chez l'humain." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24594/24594.pdf.
Full textDorel, Sylvain. "La production de puissance maximale au cours du mouvement de pédalage : implications bioénergétique et application à l'étude de la performance de haut niveau en sprint en cyclisme sur piste." Saint-Etienne, 2004. http://www.theses.fr/2004STET010T.
Full textGenevois, Cyril. "Effets de l'entrainement sur la performance en coup droit et l'hypersollicitation du membre supérieur en tennis." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10327/document.
Full textThis work aimed at exploring the training modalities to develop maximal post impact ball velocity fo the tennis forehand drive, while assessing the potential risk of upper limb oeruse. The results of our studies showed that maximal power developed during a two-handed side medecine-ball(MB) throw explained 25% of the variation of maximal forehand ball velocitiy, and was achieved when using a MB mass of 5,7 % of player's body weight. However, the relationship between throwing distances and maximal ball velocity of forehand drive was weak. By contrast, a significant relationship was found between the performance for the one-handed side MB throw and the maximal velocity of the forehand drive. A six-week trainig program based on one-hand MB throws increased the ball velocity by 11%, but the shot accuracy tended to be reduced. In the same way, a six-week training program including forehand drives with an overweighted racketr about 12 % allowed the maximal forehand ball velocity to be improved (5%), without alteration in theshot accuracy. Finally, the comparison of muscular coordination between both MB throws and the forehand drive demonstrated that the trunk and upper limb muscles presented similar activity pattern and levels. The potentials for injury risk would thus not justify. In conclusion, the finding of this work contributed to the periodization of the strength and conditioning training in order to improve the forehand drive performance in nonprofessional competitive tennis players
Riou, Marie-Ève. "Les déterminants d'une meilleure condition physique et ses conséquences métaboliques chez les individus sédentaires." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25268/25268.pdf.
Full textLarkin, Dominic. "Banc d’essai pour caractérisation en conditions réelles extérieures de modules en concentration photovoltaïque." Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10505.
Full textLevernier, Guillaume. "Déterminants biomécaniques de la performance en escalade : étude de la force des membres supérieurs et de la relation force-vitesse chez les sportifs de haut niveau Four Weeks of Finger Grip Training Increases the Rate of Force Development and the Maximal Force in Elite and Top World-Ranking Climbers Rate of Force Development and Maximal Force : Reliability and Difference between Non-Climbers , Skilled and International Climbers Force-Velocity-Power profile in high elite boulder, lead, speed climbers competitors." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS604.
Full textThis PhD work was interested in the production of force output and the force-velocity-power relationship of the upper limb in high-level climbing athletes.The first part of the study focused on two key aspects of performance: the maximal voluntary contraction (MVC) of fingers' flexor muscles and the rate of force development (RFD). A measurement protocol was set up and its trustworthiness proof checked. This showed that a 4-weeks-only specific training has an impact on RFD evolution.This protocol also checked the fact that high-level climbers have higher MVC and RFD: the difference between them and other athletes, including advanced climbers, is significant. Likewise, this protocol confirmed that fingers flexor muscles maximum contraction and RFD significantly differ depending on the discipline: they are higher in bouldering climbers than in lead climbing ones.The second part of this work studied a third key determinant of performance in climbing: the arms flexor muscles external force production at different speeds. A test was run on panels of high-level climbers representatives of the three disciplines: bouldering, lead climbing and speed climbing. It resulted in major differences in the force-velocity-power relationship depending on the discipline. Bouldering climbers notably showed a force production at high speed rate significantly higher than the two other groups. However, at lower speed rate, the force production was not a discriminative criteria between the three groups.To conclude, this work showed that the quantitative assessment of determinant biomechanical factors could be beneficial as a complement to qualitative tools available to coaches/trainers. Thus, depending on the discipline and upcoming sport deadlines, a specific training could be set up and an unbiased follow-up of the climbers' performances could be obtained
ARABI, HOSSEIN. "Endurance, puissance et vitesse maximales aerobies chez le paraplegique en fauteuil roulant." Paris 11, 1996. http://www.theses.fr/1996PA112431.
Full textAhmed, Rana. "Energy management and control for hybrid renewable energy sources in rural area." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4353.
Full textThis thesis primarily proposes, an improved P&O based State-Flow MPPT algorithm featuring two degree of freedom, in which the event driven system (MPPT) behaviour is modelled by describing it in terms of transitions among states under certain conditions. Secondarily, an extended parallel operating State-Flowbased MPPT algorithm is further proposed to be a challenging solution for the independent control of the hybrid system, where continuous control characteristic can present during a certain working state while discrete one is indicated along state transitions. Two possible configurations for the hybrid system are proposed; two separate DC/DC converters and dual input single output converter (DISO) configurations. Finally it is proposed, DC system behaviour modelling using State-Flow leading to the whole control strategy design which concern RESs MPPT, RESs and BESS coordination, power system stability and DC bus voltage regulation.Simulation and experimental results validate the effectiveness and applicability of the proposed algorithm, both results show the superiority of the proposed State-Flow based MPPT in reducing the RESs power oscillations at steady-state in various operating conditions in addition to its faster start-up and transition operation without divergence from the MPP during sudden varying weather conditions
El, achkar Maria. "Contribution au Dimensionnement et à la Commande d’un Générateur de type Cascade de Machines Asynchrones à Double Alimentation." Thesis, Cergy-Pontoise, 2016. http://www.theses.fr/2016CERG0814/document.
Full textThis thesis is a contribution to the power sizing and the control of a Cascaded Doubly Fed Induction Generator (CDFIG). The machine model for simulation is based on a modular representation, derived from the Park model of two distinct Doubly Fed Induction Machines expressed in their own reference frames. The dynamic model of the cascaded machine is then extended to be described in a unified reference frame. This representation is convenient for the sizing of the machine and for the design of the controller. The steady state power operating margins of the cascaded machine are investigated. A generic analytic method is suggested to derive the active-reactive power domain. The limit curves are defined in terms of the rated quantities of the machine. The study takes into account the magnetic circuit saturation effect. It is proven that the power capability of the machine is determined by the stator current maximum values and is subject to several limitations. The analytical approach is tested and validated by experimental measurements. The CDFIG is controlled in grid-connected and standalone operation modes. In grid-connected application, the attention is paid to high power wind generation systems. A new maximum power tracking of a variable speed wind turbine is suggested. The generating plant is carried to provide a quasi-constant maximum power regardless wind fluctuations. In addition to active power optimization the power factor is adjusted according to the grid code requirements and the operating domain of the integrated unit. A virtual flux oriented vector control is applied for the decoupled regulation of active and reactive powers, leading to grid voltage sensorless operation. In standalone operating mode, the study treats in particular the embedded aircraft power system generation. Two distribution networks are considered: constant frequency AC network and DC network. In both cases, the control aims to maintain a constant output voltage. The operation of the CDFIG supplying unbalanced three-phase load is further explored. Control schemes to cope with unbalanced stator voltage conditions are developed. Two compensation methods are elaborated: the first dealing with dual rotating frames and the second is based on repetitive controller. Simulations with Matlab/Simulink software and experiments validate the control approaches
Liu, Hongliang. "Contribution for integrating urban wind turbine into electrical microgrid : modeling and control." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2331/document.
Full textThe integration of the wind power, which is one mostly used renewable resource, is always one challenger for urban microgrid. In this thesis, one urban wind turbine based on a permanent magnet synchronous machine (PMSM) is studied in order to be integrated into a DC urban microgrid. A state of the art concerning the renewable energies, DC microgrid, and control strategies of wind power generation is done. Based on a model of urban wind turbine fitting the demand of urban electric system, which consists of an emulator of wind speed and blades, a PMSM and a DC/DC converter, this thesis proposes the maximum power point tracking (MPPT) methods satisfying the requirement of producing energy as much as possible, and power limited control (PLC) strategies answering the demand of flexible energy production. From simple to complex, four MPPT algorithms including Perturbation and Observation (P&O) fixed step-size method, P&O with improved Newton-Raphson method, P&O with fuzzy logic method and lookup table method are studied and implemented to be compared with each other using three wind velocity profiles. According to the experience about MPPT subject, four PLC algorithms are introduced and implemented to be analyzed and compared with each other with one power demand profile calculated randomly. Summarizing all experimental results, the lookup table method can handle all requirement of MPPT operating mode supplying the best performance, however, in the condition of more flexible power demand operating mode, the combination of P&O and fuzzy logic method presents the best performance and potential which can be achieved in future works
Lopez, Santos Oswaldo. "Contribution to the DC-AC conversion in photovoltaic systems : Module oriented converters." Thesis, Toulouse, INSA, 2015. http://www.theses.fr/2015ISAT0001/document.
Full textThese last years, a growing interest in power electronic systems has been motivated by the emergence of distributed renewable energy resources and their interconnection with the grid. In this context, the need of low power topologies fed by a few photovoltaic modules avoiding the use of transformers opens the study of special converters and the associated control strategies ensuring stability, reliability and high efficiency. A resulted generic device known in the commercial and scientific literature as “microinverter” or “module integrated converter” performs a plug and play product together with the PV module called an “AC module”.This work is devoted to the study of a transformer-less single-phase double-stage grid-connected microinverter. The proposed topology has a non-isolated high-gain boost type DC-DC converter and a non-isolated buck type DC-AC converter connected in cascade through a DC bus. The DC-DC converter permanently extracts the maximum power of the PV module ensuring at the same time a good performance coping with power changes introduced by the change in the environmental conditions. The DC-AC stage injects the power extracted by the DC-DC stage into the grid ensuring a high level of power quality. The research efforts focus on the involved control functions based on the sliding mode control theory, which leads to a simple implementation with a comprehensive theoretical description validated through simulation and experimental results.After giving the state-of-the-art in the first chapter, the manuscript is divided into four chapters, which are dedicated to the Maximum Power Point Tracking (MPPT), the DC-DC stage and its control, the DC-AC stage and its control and the complete microinverter. A new Extremum Seeking Control (ESC) MPPT algorithm is proposed. The single-switch quadratic boost converter is studied operating as a Loss-Free-Resistor (LFR) obtaining a high DC output voltage level with a safe operation. The full-bridge converter is controlled as a Power Source Inverter (PSI) using a simple sliding-mode based tracking law, regulating the voltage of the DC bus and then ensuring a high power quality level in the grid connection. Finally, the three building blocks are merged to obtain a sliding mode controlled microinverter constituting the main result and contribution of the work
Croci, Lila. "Gestion de l'énergie dans un système multi-sources photovoltaïque et éolien avec stockage hybride batteries/supercondensateurs." Phd thesis, Université de Poitiers, 2013. http://tel.archives-ouvertes.fr/tel-00943296.
Full textMartin, Marie Claude. "Transition aérobie-anaérobie au cours de l'exercice sous maximal sur tapis roulant : analyse critique physiologique à partir de l'étude des effets d'un préexercice sur la cinétique de la lactatémie lors d'un exercice de puissance limite aérobie." Paris 10, 1994. http://www.theses.fr/1994PA100074.
Full textNumerous authors have tried to give a signification to the blood lactate concentration value using exercise lacticaemia and power relationship. These studies have pointed out the concepts of aerobic anaerobic transition zone and "anaerobic threshold". But information’s given by threshold methods have showed that these methods were not reliable. The aim of the present study is : - to study the influence of a supramaximal pre-exercise on the lacti caemia kinetic during an exertion with an intensity that could be situated in the aerobic-anaerobic transition zone : and particular by defining this zone in comparison with Mader's maximal lactate steady state", and the individual anaerobic threshold" (iat) of Simon and al. - and to define a procedure which allow the determination of the maximal intensity corresponding to lactate steady state. The results obtained during 4 experimental protocols confirm that: 1- experimental conditions is the most important factor of lactate kinetic change (pre-exercise effects). 2- neither the iat, nor the "4 mmol. 1-1 threshold" can be considered as "maximal lactate steady state"
Samozino, Pierre. "Capacités mécaniques des membres inférieurs et mouvements explosifs. Approches théoriques intégratives appliquées au saut vertical." Phd thesis, Université Jean Monnet - Saint-Etienne, 2009. http://tel.archives-ouvertes.fr/tel-00483683.
Full textThorel, Alexandre. "Équation de diffusion généralisée pour un modèle de croissance et de dispersion d'une population incluant des comportements individuels à la frontière des divers habitats." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMLH07/document.
Full textThe aim of this work is the study of a transmission problem in population dynamics between two juxtaposed habitats. In each habitat, we consider a partial differential equation, modeling the generalized dispersion, made up of a linear combination of Laplacian and Bilaplacian operators. We begin by studying and solving the same equation with various boundary conditions in a single habitat. This study is carried out using an operational formulation of the problem: we rewrite this PDE as a differential equation, set in a Banach space built on the spaces Lp with 1 < p < +∞, where the coefficients are unbounded linear operators. Thanks to functional calculus, analytic semigroup theory and interpolation theory, we obtain optimal results of existence, uniqueness and maximum regularity of the classical solution if and only if the data are in some interpolation spaces
Yammine, Samer. "Contribution to the Synchronous Reluctance Machine Performance Improvement by Design Optimization and Current Harmonics Injection." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14555/1/yammine.pdf.
Full textBossé, Ynuk. "Antioxidants and oxidative stress in skeletal muscle contraction, aerobic power and obesity /." 2002. http://proquest.umi.com/pqdweb?did=766442291&sid=3&Fmt=2&clientId=9268&RQT=309&VName=PQD.
Full textParent, Andrée-Anne. "Consommation en oxygène des muscles respiratoires (VO2MR) durant une épreuve inspiratoire progressive sous-maximale chez les blessés médullaires." Mémoire, 2012. http://www.archipel.uqam.ca/5393/1/M12554.pdf.
Full textEl, Hrichi Mehdi. "Performance et réponses ventilatoires lors d'épreuves d'effort à puissance constante ou décrémentée visant à maintenir une consommation d'oxygène maximale." Thèse, 2016. http://hdl.handle.net/1866/18637.
Full textAerobic endurance is more commonly measured at submaximal rather than maximal work intensities, mainly through constant-power output trials, or time trials. However, real competition conditions are better represented through the ability to sustain the highest power output (PO) for the largest period of time. That implies the use of self-pacing strategies, which leads power output to vary throughout the exercise duration, and can also induce the attainment of maximal oxygen consumption (VO2max), in some cases. The aim of this study was thus to compare the variation of some ventilatory (tidal volume, breathing frequency) and systemic (gross mechanical efficiency, O2 cost) parameters, between two maximal endurance protocols, the first one consisting of a constant-load test (100% MAP) and the second one a decremental test at near-maximal aerobic capacity (> 95 % VO2max). Indeed, compared to a “classical” constant-power output test, a decremental test implies the use of VO2 rather than mechanical PO to control intensity throughout the task, and a higher effort duration. Consequently, we observed that the sustainment of maximal O2 consumption rather than maximal aerobic power (MAP) led to different physiological responses from those usually observed during constant-power output tests. These differences were caracterized by a higher breathing frequency as well as a lower tidal volume during the decremental test, which both reflect a more exagerated tachypneic response, and therefore indicate the existence of a shallower breathing pattern in this type of effort, probably due to a higher ventilatory muscle fatigue. This fatigue could also be expressed through a lower gross mechanical efficiency and a higher O2 cost, despite a progressive decrease of mechanical power as soon as oxygen consumption gets near VO2max.
Duvergé, Sébastien. "Comparaison de deux outils de mesure pour évaluer l'aptitude aérobie chez des personnes âgées ne présentant aucune pathologie chronique." Mémoire, 2007. http://www.archipel.uqam.ca/634/1/M10086.pdf.
Full textRiou, Marie-Éve. "Les déterminants d'une meilleure condition physique et ses conséquences métaboliques chez les individus sédentaires /." 2008. http://www.theses.ulaval.ca/2008/25268/25268.pdf.
Full textGarzon, Mauricio Julio. "Effet de l'immersion sur le coût bioénergétique de pédalage sur ergocycle aquatique et détermination des équivalences lors du pédalage sur terrain sec." Mémoire, 2010. http://www.archipel.uqam.ca/2836/1/M11337.pdf.
Full textGarzon, Camelo Mauricio. "Comparaison des réponses physiologiques lors d’un exercice incrémental maximal sur vélo immergé et sur terrain sec : aspects biomécaniques, cardiopulmonaires et hémodynamiques." Thèse, 2014. http://hdl.handle.net/1866/12134.
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