47 research outputs found
Monument destiné à l'exercice de la souveraineté du peuple
No full textfull view, elevation (top) and interior of the assembly place (bottom
Design of a Fuel Cell Based Backup System for Telecoms Applications
No full textThe aim of this project is to develop a modular 5.5 kW backup system for telecoms stations based on a Proton Exchange Membrane Fuel Cell. Here, we will focus on the sizing procedure both of the fuel cell and of the DC/DC converter, whose topology is determined by the choice of the fuel cell stack. In our case this is an interleaved boost converter always working in the discontinous conduction mode. We will present a Simulink dynamic
model we developed that integrates the fuel cell and the boost converter models, and their controller. The simulations show the system is capable of supplying the maximum power, and to regulate the output voltage with a good dynamic response in the whole 42–60 V range
Systèmes Hybrides de Génération de Moyenne Puissance: Applications Stationnaires aux Energies Renouvelables
No full textLes systèmes de génération alimentés par sources renouvelables connaissent dernièrement une diffusion
croissante,soit dans les pays développés soit dans les pays en voie de développement.La nécessité d’obtenir une
meilleure fiabilité,les développements technologiques en filières comme celle des super-condensateurs ou celle de
l’hydrogène ont conduit à des solutions plus complexes : des systèmes associant différentes sources et différents
éléments de stockage ayant pour nom « SYSTEMES HYBRIDES ».Dans cet article seront étudiés les divers composants
de ces systèmes, sera proposé un schéma général et, ensuite, seront présentés des exemples de systèmes hybrides
trouvés dans la littérature
Parigi, il palazzo conteso: L’Hôtel de Montholon di Soufflot Le Romain e Jean-Jacques Lequeu
No full textIn Paris, the Hôtel de Montholon, now located at 23 boulevard Poissonnière, stands on that quadrilateral of
streets that gathers, between the Faubourg Poissonnière and the rue Chaussée-d'Antin, the rich dwellings of the Parisian
upper middle class of the Age of Enlightenment. Nevertheless, the courtyard building, with its monumental colonnade and
large open-air terrace, represents a turning point for at least two different reasons: on the one hand, it is one of the last
Hôtels particuliers built before the Revolution, surviving the later destruction. On the other hand, it represents the last work
- and the best documented, with almost one hundred drawings and sketches of the project - of the professional association
between François Soufflot Le Romain (1750-1801), grandson of Jacques-Germain Soufflot - the author of the Parisian
Panthéon - and Jean-Jacques Lequeu (1757-1826) "dessinateur et inspecteur" of the project. In the tormented biography
of these two architects with a common destiny, the Hôtel de Montholon is the project that marks the breaking point between
the two young men's hopes for success and the awareness that the Revolutionary history in France would change forever
the figure of the modern architect
Adumbratio altitudinae geometralia ... ; [Elévation de l'alcôve antique pour le baron T***] : [dessin] / Jn Jques Lequeu inv et delin, 1788
No full textÉlévatio
Appartement de la citoyenne T***, bosquet et petit pont de bois
No full textRéférence bibliographique : Paris, Petit-Palais, 6
Operation of power semiconductors under transient thermal conditions: thermal fatigue reliability and mechanical aspects
No full text
