Modélisation électromagnétique et thermique des moteurs à induction, en tenant compte des harmoniques d'espace

Abstract : This work is interested in the study of the electromagnetic and thermal behaviors of the induction motor. A state of the art is initially drawn up, where we have presented and discussed the current methods dealing with electromagnetic and thermal modeling of induction motors. An electromagnetic model, that uses the 2D complex finite element method to solve the field equations, is developed. The rotor movement is accounted for by coupling the air gap field, for each space harmonic, using the double air gap method. The superposition principle permits the determination of the final solution. To deal with non linear problems, an approach that introduces equivalent reluctivities, is proposed. We have assumed that the saturation is only due to the first space harmonic. A thermal model is elaborated by using the nodal method. The machine is cut up into 11 cylindrical lumped elements, the thermal model represents the juxtaposition of these lumped elements. The electromagnetic and thermal models are, weakly, coupled together for a more precise determination of the temperature distribution inside the motor. ln the validation phase of our work, we have designed a test bench that allows specific torque and temperature measurements. The comparison of the calculations and the measurements is satisfactory.
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Smail Mezani. Modélisation électromagnétique et thermique des moteurs à induction, en tenant compte des harmoniques d'espace. Autre. Institut National Polytechnique de Lorraine, 2004. Français. ⟨NNT : 2004INPL047N⟩. ⟨tel-01749697⟩

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