Amar Bentounsi

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This paper presents an analysis of effects of dynamic air-gap eccentricity on the performances of a 6/4 Switched Reluctance Machine (SRM) through finite element analysis (FEA) based on a FEMM package associated to MATLAB/SIMULINK software. Among the various Time-Frequency methods used for detection of defects, the Time-Frequency Representation (TFR) is an(More)
This paper presents a detailed study of the rotor asymmetry, caused by broken bars, and their effects on the stator current of an induction machine under different supply conditions. The analytical models dedicated to the rotor faults are often penalized by simplifying assumptions, particularly the distribution of the magnetic flux density in the air-gap.(More)
Due to its many advantages, the switched reluctance machine (SRM) finds several applications such as in the high-speed motor operation or in the power generation. However, unlike many other electric machines, the SRM has the particularity of working in highly saturated regime, which leads to a nonlinear mathematical model. Therefore, this nonlinear behavior(More)
This paper presents some analysis techniques of the voltages induced in the stator windings after supply disconnection, to detect broken rotor bars in induction motor (IM). When the motor is disconnected from the supply voltage, the broken bars cause a distortion of the magnetomotive force generated by rotor windings, and some particular harmonics induced(More)
Electric machinery course is of an immense importance for students graduating in electrical engineering education. Since the electric machines environment is incessantly changing, especially with the introduction of electronic drives, computers and shipboards systems, then the revision of their curricula and the modernization of their experimental labs have(More)
This paper presents an analysis of effects of dynamic air-gap eccentricity on the performances of a 6/4 Switched Reluctance Machine (SRM) through finite element analysis (FEA) based on a FEMM package associated to MATLAB/SIMULINK package software. Among the various Time-Frequency methods used for detection of defects, the Time-Frequency Representation (TFR)(More)
This paper presents the finite element modelling of a three-phase synchronous machine (3 kW-1500 rpm). In addition to analyzing the electromagnetic behaviour of the machine, various tests (no-load, short-circuit and load tests) was performed virtually using Maxwell software and validated experimentally. This work aims to parametric identification of(More)
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