Modélisation analytique magnéto-acoustique des machines synchrones à commutation de flux à aimants permanents : optimisation du dimensionnement

This thesis deals with the study of Flux-Switching Permanent-Magnets, in particular on magnetic, mechanical and acoustic behavior of these structures. Firstly, origin of noise generated has been presented with particular attention to magnetic phenomena. Exploration of magnetic stresses, mechanical and vibration analysis have been performed by finite element simulations. Secondly, an analytical multi-physics model has been presented in order to estimate magnetic, mechanical and acoustic behavior. The different models have been validated by finite element simulations or by experimental measurements. Finally, this model has been applied in a geometric optimization loop to maximize electromagnetic torque and minimize acoustic noise generated. These optimizations have been performed on 3-phases 12/10, 4-phases 16/12 and 5-phases 20/18 at fixed and variable speed.