Étude d’un moteur supraconducteur à flux axial avec une transmission magnétique supraconductrice intégrée

Abstract : The study of an axial-field high temperature superconducting (HTS) motor for applications requiring high torque densities is proposed. The HTS motor consists of a stator with copper winding and an inductor with superconducting coils. A HTS magnetic coupler is used as a part of the system, to transmit the torque from the HTS motor to the load. This solution is a good alternative to the usually used torques tubes as it results in the reduction of conduction thermal losses and offers an intrinsic protection against overloads. To evaluate the performance of the studied device, a 3D electromagnetic analytical model has been developed. This model takes into account the dependence on the applied magnetic field and temperature of the HTS material. Finally, a genetic algorithms optimization of the studied device is carried out to find the optimum geometric dimensions. The results show that the proposed solution (machine with magnetic coupling) is about 2 to 3,5 times more compact than a conventional machine drive solution. An axial-field HTS motor with integrated magnetic coupling has been also designed, constructed and tested. The test results have been checked by 3D finite element computations.
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Bastien Dolisy. Étude d’un moteur supraconducteur à flux axial avec une transmission magnétique supraconductrice intégrée. Autre. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0079⟩. ⟨tel-01751728⟩

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