A new equivalent model of the induction motor with turn to turn fault on one phase has been developed. This model has been used to establish two schemes to estimate the severity of the short circuit fault. In the first scheme, the faulty model is considered as an observer, where a correction of an error between the measured and the estimated currents is the kernel of the fault severity estimator. However, to develop the second method, the model was required only in the training process of an artificial neural network (ANN). Since stator faults have a signature on symmetrical components of phase currents, the magnitudes and angles of these components were used with the mean speed value as inputs of the ANN

In this paper, versatile Metal/TCO/p-Si Schottky Barrier Diodes (SBDs) with dissimilar TCO intermediate layers (ZnO and ITO) were fabricated by RF magnetron sputtering technique. An overall electrical performance comparison between the Al/ZnO/p-Si, Au/ITO/p-Si and the conventional Au/p-Si structures is carried out. The measured I-V characteristics indicate that the proposed Al/ZnO/p-Si design exhibits an outstanding capability for achieving a high rectifying ratio of 142 dB. This is mainly due to the enhanced Schottky barrier height (SBH) of 0.75 V and close to unite ideality factor (n = 1.23). Such behavior can be attributed to the enhanced interface quality achieved by introducing TCO inter-layers, which could decrease the Series resistance. A comparative study of the elaborated structures performance is carried out in which new Figures of Merit (FoM) parameters that combine both electrical and thermal stability performances are proposed. The Experimental results show that the proposed designs with ITO and ZnO sub-layers exhibits improved FoM parameters as compared to the conventional Au/p-Si structure. Moreover, this comparative study enables to the designer to acquire a comprehensive review about the Si-based SBDs design tradeoffs. It is demonstrated that the insertion of a TCO inter-layer might be beneficial for avoiding the degradation related-heating effects. Therefore, the proposed designs offer the possibility of bridging the gap between superior electrical performance and high thermal stability, which makes them suitable for developing high-performance Schottky solar cells and sensing applications.

La région de Kasserou est située dans la partie Nord-est des Monts de Batna-Belezma. Le Jurassique dans ces massifs constitue une série complète qui s'étale du Lias au Tithonique. Cette série est représentée à la fois par des formations carbonatées et calcaro-dolomitique dans sa partie sud, et marno-calcaire dans sa partie nord dont le précieux repère de l’Ammotitico rosso.

Les systèmes industriels rencontre dans leurs vies de fonctionnement des situations délicates qui provoquent leurs défaillances. La sûreté de fonctionnement se manifeste comme un ensemble de méthodes aui peuvent aider à la mise en place d'une politique de maintenance pour les systèmes industriel. Dégager une politique de maintenance adéquate pour une station d'épuration certifie ISO 14001 en utilisant les loi de probabilité, l'historique des composante de la station d'épuration pour la détermination exactes des paramètres F.M.D