Delphin Tomboravo, Elodie Francia Siaka, Jeannot Velontsoa, Roger Vony, Tsialefitry Aly Saandy
{"title":"Contrainte électrique majeure d’une génératrice synchrone à rotor bobiné associée à un aérogénérateur chargé et influence de rayon de pales sur la vitesse du vent au démarrage du groupe","authors":"Delphin Tomboravo, Elodie Francia Siaka, Jeannot Velontsoa, Roger Vony, Tsialefitry Aly Saandy","doi":"10.21494/iste.op.2022.0863","DOIUrl":"https://doi.org/10.21494/iste.op.2022.0863","url":null,"abstract":"RÉSUMÉ. Le système de conversion de l’énergie mécanique en énergie électrique comprend un moteur, une génératrice et une charge. Une interface mécanique placée entre le moteur et la génératrice adapte la vitesse de rotation des deux maillons, tandis qu’une interface électrique reliant la génératrice et la charge assure la stabilité de la fréquence et des niveaux des signaux électriques de la charge. Les contraintes électriques de la génératrice synchrone à rotor bobiné de la chaine et la vitesse du vent ABSTRACT. System of mechanical energy conversion into electric energy includes a motor, a generator and a load. A mechanical interface placed between the motor and the generator adapt the two links rotation speed, while an electric interface connecting generator and load ensures the frequency and the load electric signals levels stability. The chains synchronous wound rotor generator electric constraints and the group starting wind speed are studied by referring the load and the electric interface to the generator and by solidarizing the generator and the wind mill. Betz limit power, affected by the site attenuating factor is used like motive power of the group. Wind speed instability converts the generator into a variable frequency source supplying a RL cell modelling the referred load and electric interface. Simulation by programming under Scilab with data close to that real generator revealed overcurrent in the generator for for high speeds of the wind and an increase of starting wind speed of the group for a blades ray reduction. This justifies the interfaces and the control units need in the group. generator, Overcurrent.","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115557599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"La propulsion thermique vit elle ces dernières heures, pour un tout électrique ?","authors":"Cornel Stan, P. Guibert","doi":"10.21494/iste.op.2021.0616","DOIUrl":"https://doi.org/10.21494/iste.op.2021.0616","url":null,"abstract":"","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131095684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Use of the IdEP-IdLA model for the study of aggregative processes in closed systems","authors":"Vittorio Cocchi, R. Morandi","doi":"10.21494/iste.op.2021.0741","DOIUrl":"https://doi.org/10.21494/iste.op.2021.0741","url":null,"abstract":". As a consequence of the results obtained in a previous work, the study of aggregative reactions in closed gas systems is here addressed. Using the IdEP-IdLA mathematical model, the fundamental formulas that de-scribe both autopoietic and heteropoietic aggregative processes are expounded. Particular emphasis is placed on the different roles that chance and necessity play according to the coding level of the processes themselves. The model responds coherently with the physical chemistry of reactions in a wide range of conditions, thus being accredited as a promising tool of theoretical investigation. In particular, in heteropoietic processes, the need to extend the entropic balance to coding agents (not only as order promoters but also as producers of compensatory entropy) is demonstrat-ed. RÉSUMÉ. En conséquence des résultats obtenus dans un article précédent, l'étude des réactions agrégatives dans les systèmes de gaz fermés est ici abordée. En utilisant le modèle mathématique IdEP-IdLA, les formules fondamen-tales qui décrivent à la fois les processus d'agrégation autopoïétique et hétéropoïétique sont exposées. Un accent particulier est mis sur les différents rôles que jouent le hasard et la nécessité selon le niveau de codage des processus eux-mêmes. Le modèle répond de manière cohérente avec la chimie physique des réactions dans un large éven-tail de conditions, étant ainsi accrédité comme un outil prometteur d'investigation théorique: en particulier, dans les processus hétéropoïétiques, la nécessité d'étendre l'équilibre entropique aux agents codants (comme promoteurs d'ordre mais aussi comme producteurs d'entropie compensatrice) est démontré.","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"133 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115171525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Généralisation de statistiques et d’algèbres destinées au traitement de systèmes fractionnaires","authors":"Alain Le Méhauté, L. Nivanen","doi":"10.21494/iste.op.2023.0984","DOIUrl":"https://doi.org/10.21494/iste.op.2023.0984","url":null,"abstract":"RÉSUMÉ. Cet article est une brève présentation d'algèbres non additives particulières adaptées aux géométries fractales. Elles sont liées à une généralisation des fonctions exponentielles et logarithmiques en fonction d'un paramètre externe marquant la métrique non entière et la topologie hyperbolique de tores pointés présentant un angle au bord. La relation entre ces opérateurs, ce type d’algèbres, les géométries fractales et les dynamiques sous contrôle d'opérateurs différentiels non entiers est analysée. Les différents aspects des statistiques alors incomplètes sont développés à l'aide des nouveaux opérateurs. ABSTRACT. This paper is a brief presentation of the so called Non-Extensive Algebra. This algebra is related to the generalization of the exponential and logarithm functions depending on an external parameter. The relationship between these operators & this algebra and fractal geometry & the dynamics under the control of non-integer differential operators is analyzed. The different aspects of the incomplete statistics are developed using the new operators.","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115477513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hommage à Mme la Prof.univ.em.dr.ing. Ana Maria Bianchi à l’occasion de son 75éme anniversaire","authors":"Gheorghe Dumitrascu, Y. Fautrelle, M. Feidt","doi":"10.21494/iste.op.2022.0876","DOIUrl":"https://doi.org/10.21494/iste.op.2022.0876","url":null,"abstract":"","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121675242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tom Villemin, O. Farges, G. Parent, R. Claverie, J. Bouyer
{"title":"Modélisation du bilan thermique d’un panneau photovoltaïque par la méthode de Monte Carlo et validation expérimentale","authors":"Tom Villemin, O. Farges, G. Parent, R. Claverie, J. Bouyer","doi":"10.21494/iste.op.2022.0896","DOIUrl":"https://doi.org/10.21494/iste.op.2022.0896","url":null,"abstract":".","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122143873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Entropie, Neguentropie et Anti-entropie : le jeu des tensions pour penser le vivant","authors":"Marie Chollat-Namy, G. Longo","doi":"10.21494/iste.op.2023.0983","DOIUrl":"https://doi.org/10.21494/iste.op.2023.0983","url":null,"abstract":"RÉSUMÉ. Des concepts différents, dérivés de celui d’entropie, mais qui s’y opposent, seront corrélés dans l’analyse de l’état vivant de la matière : ceux de neguentropie et d’anti-entropie. On discutera le rôle disruptif de l’entropie ainsi que son apport à la production de l’organisation du vivant (anti-entropie), dans l’espace et dans le temps. Cela nous permettra de parler de l’historicité du vivant et de définir un espace de viabilité où la diversité anti-entropique est obtenue par intégration/assimilation d’entropie locale (variation) dans les structures spatiales et les rythmes temporels du vivant. Le local co-construit ainsi le global, tout en constituant une contrainte de l'un sur l’autre, dans une tension au cœur de la phylogenèse et de l’ontogenèse. ABSTRACT. Different concepts, derived from that of entropy, but which oppose it, will be correlated in the analysis of the living state of matter: those of negentropy and anti-entropy. We will discuss the disruptive role of entropy as well as its contribution to the production of the organization of life (anti-entropy), in space and time. This will allow us to talk about the historicity of the living and to define a space of viability where anti-entropic diversity is obtained by integration/assimilation of local entropy (variation) in the spatial structures and temporal rhythms of the living. The local thus co-constructs the global, while they constitute a constraint of one on the other, in a tension at the heart of phylogenesis and ontogenesis","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129688538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yaniss Nyffenegger-Péré, Mégane Bati, Stéphane Blanco, J. Dufresne, Mouna El Hafi, Vincent Eymet, Vincent Forest, R. Fournier, Nicolas Mellado, Nada Mourtaday, M. Paulin
{"title":"Une estimation exacte du forçage radiatif par la méthode de Monte-Carlo","authors":"Yaniss Nyffenegger-Péré, Mégane Bati, Stéphane Blanco, J. Dufresne, Mouna El Hafi, Vincent Eymet, Vincent Forest, R. Fournier, Nicolas Mellado, Nada Mourtaday, M. Paulin","doi":"10.21494/iste.op.2022.0898","DOIUrl":"https://doi.org/10.21494/iste.op.2022.0898","url":null,"abstract":"","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127205978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sylvain Cailliez, David Chalet, Philippe Mannessiez
{"title":"Détermination des propriétés thermiques anisotropes d’une batterie Li-ion en fonction de l’état de charge par spectroscopie d’impédance thermique","authors":"Sylvain Cailliez, David Chalet, Philippe Mannessiez","doi":"10.21494/iste.op.2022.0897","DOIUrl":"https://doi.org/10.21494/iste.op.2022.0897","url":null,"abstract":"","PeriodicalId":199398,"journal":{"name":"Entropie : thermodynamique – énergie – environnement – économie","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117280028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}