Nouvelles techniques de commande pour les entraînements électriques polyphasés : commande en mode instantané (DTC et MPC) dans des situations limites

Abstract : Multiphase drives have gained special relevance in recent times for their use in applications where reliability is of interest for economical and safety reasons. This Thesis focuses on the development of direct control techniques to optimally control multiphase machines, analyzing their tolerance to different limit operating conditions, such as electrical constraints (voltage, current and magnetization level limits) or failure situations such as an open-phase fault. First, the DTC technique is proposed to manage the open-phase fault operation of the multiphase machine. A comparison of the fault-tolerant capability of DTC with other control techniques is carried out, to conclude the strengths and weaknesses of the analyzed methods facing this limit operation. Finally, an optimal current controller is developed using MPC techniques that allows the optimal utilization of the system’s torque capability under electrical limitations. Simulation results and experimental validations are obtained to corroborate the initial approaches, through the use of particular cases of five-phase drives controlled using different frequency-domain control subspaces.
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Mario Bermúdez Guzmán. Nouvelles techniques de commande pour les entraînements électriques polyphasés : commande en mode instantané (DTC et MPC) dans des situations limites. Energie électrique. Ecole nationale supérieure d'arts et métiers - ENSAM; Universidad de Sevilla (Espagne), 2018. Français. ⟨NNT : 2018ENAM0061⟩. ⟨tel-02149692⟩

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