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The aim of this paper is to propose a fault detection and diagnosis approach for Permanent Magnet Synchronous Machines (PMSMs) based on vibration signals analysis. First, an improved multi-physical model of the machine has been simulated to generate healthy and faulty vibration displacements, by considering the entire stator structure. The presented model has been validated, in previous papers, by a Finite Element Analysis (FEA). Then, a detailed state-of-the-art on the most encountered machine faults, with their electromagnetic and mechanical signatures, is presented. Both Rotor Eccentricity and DeMagnetization faults are simulated by changing some model's parameters and then, they are detected by a spectral and modal analysis of vibration displacements. Finally, a global diagnosis approach is investigated for Fault Detection and Isolation (FDI) in the considered machine. Therefore, the proposed multi-physical model could provide healthy and faulty characteristics and could be suitably used for vibration monitoring and fault diagnosis tasks.

The aim of this paper is to present a three dimensional (3D) study and modelling of a 27.8 kW, 36 000 rpm claw-pole synchronous machine, by means of the 3D finite elements method. The 3D magnetic field computation has been carried out by the coupling of the total and reduced scalar magnetic potential formulations implemented in the FLUX3D software. The simulation results have shown the intrinsically 3D nature of the electromagnetic field in this type of machines. The predetermination of the characteristics of the machine at no-load and at load has been realized with the use of the magnetostatic model, taking the materials nonlinearities into account. Different results of computation of the 3D magnetic field in this machine are presented and its main characteristics are developed.

The aim of this paper is to present a three dimensional (3D) study and modelling of a 27.8 kW, 36 000 rpm claw-pole synchronous machine, by means of the 3D finite elements method. The 3D magnetic field computation has been carried out by the coupling of the total and reduced scalar magnetic potential formulations implemented in the FLUX3D software. The simulation results have shown the intrinsically 3D nature of the electromagnetic field in this type of machines. The predetermination of the characteristics of the machine at no-load and at load has been realized with the use of the magnetostatic model, taking the materials nonlinearities into account. Different results of computation of the 3D magnetic field in this machine are presented and its main characteristics are developed. Nous pr?sentons dans cet article la mod?lisation tridimensionnelle d'une machine synchrone ??griffes de 27,8 kW, 36 000 tr/mn par la m?thode des ?l?ments finis. Cette mod?lisation est r?alis?e en magn?tostatique par l'utilisation du couplage des formulations en potentiels scalaires magn?tiques total et r?duit implant?es dans le logiciel FLUX3D. Le caract?re intrins?quement tridimensionnel du champ ?lectromagn?tique dans ce type de machines est mis en ?vidence. La pr?d?termination des caract?ristiques ??vide et en charge est effectu?e en tenant compte des non-lin?arit?s des mat?riaux. Les diff?rents r?sultats de simulation sont expos?s et comment?s.