Testing of proton exchange membrane fuel cell system is one of the most important issues due to the cost and security reasons in railway applications. To reduce the cost, it would be necessary to have a representative simulation model for this case. Having an accurate model of proton exchange membrane fuel cell system requires considering several a...
High integrated power electronic modules are more and more designed with the emergence of new semi-conductor technologies. Thus, increase of reliability of power modules induces the precise knowledge of the local temperature, even if it can not be measured at any location. Moreover, some external variables of having an effect on the system may be u...
This paper proposes a novel method for the prediction of stator current modulations applied to the detection of load torque oscillations in asynchronous drives. In faulty cases, the stator current presents amplitude and phase modulation (AM - PM) leading to sideband frequency components in the current spectrum. The characteristics of these modulati...
This paper focuses on multi-physics modeling of encapsulating gels in power electronic modules for transient and steady-state simulation. With the emergence of wide-bandgap semiconductors such as SiC or GaN, operating at a higher temperature than conventional Si power chips, this passive element of the packaging appears as a few studied element sen...
The study of infrasound (acoustic) and gravity waves sources and propagation in the atmosphere of a planet gives us precious insight on atmosphere dynamics, climate, and even internal structure. The implementation of modern pressure sensors with high rate sampling on stratospheric balloons is improving their study. We analyzed the data from the Nat...
Validation and verification are the most important issues in railway applications due to cost and security reasons. Therefore, having a model of the system would be necessary in this case. Due to non-ideal test conditions in industrial applications, an accurate parameter identification process has to be defined. In this paper, bond graph method is ...
This paper considers an iterative procedure to design a minimum possible order unknown input functional observer for linear time-invariant (LTI) systems. Necessary and sufficient conditions for the existence of the observer are given. The proposed procedure is simple and is based neither on the solution of a generalized Sylvester equation nor canon...
La modulation de largeur d'impulsion est un principe bien connu en électronique de puissance. Si l'état de l'art est riche d'exemples de schémas de modulation, cela ne veut pas dire qu'un outil de modulation générique à toutes structures de conversion soit communément utilisé. Cet article propose une méthode pour d'une part, déterminer le modèle li...
Silicon nanowires (SiNWs) attract growing attention in view of their promising thermoelectric applications. Low thermal conductivity and bulk-like electrical properties make them a perfect candidate as a thermoelectric material in framework of the concept “phonon-glass/ electroncrystal”. Theoretically, the values of figure of merit (ZT) for SiNWs a...
Depuis quelques années, le CSNSM d’Orsay est capable de fabriquer des pistes en niobium et silicium en méandres qui forment des microcalorimètres TES à haute résistivité (HRTES). La haute impédance permet l’utilisation d’une électronique de lecture à base de transistors. Cela simplifie le multiplexage et offre la possibilité de déplacer le premier ...
