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Contribution à l'alimentation en tension de machines synchrones à aimants permanents à nombre de phases élevé : fonctionnement normal et degradé

Abstract : This work deals with the segmented power supply of multi-phase synchronous permanent magnet machines by modular voltage inverters. The supply segmentation obtained by the increase of the windings number allows operating in fault mode, when phases are disconnected from the supply. However, for a voltage supply, the magnetic coupling between windings can lead with the increase of current ripples to generate additional lasses. The q-phase MSAP with unspecified emf waveform is modeled and the optimal current waveform canceling the low frequency torque undulations in normal mode is defined. The generalized Concordia transformation allows to represent a q-phase machine by several mono and 2-phase machines magnetically uncoupled. A simultaneous control method of the q single-phase inverters, based on the use of adapted voltage vectors, allows to minimize the current undulation rate and thus the lasses in the system. When faults occur, leading to the disconnection of phases from the supply, torque undulations of law frequency appear. Several methods, based on the current waveform modification of one or more than one active phases are proposed in the case either of supply by q single-phase inverters or by a qphase inverter. Several methods of filtering are validated by experimental results. ln order to allow high dynamics current tracking, a new AC current control method with constant switching frequency is presented and study in the final chapter. Based on the used of a hybrid regulator, it associates the robustness of sliding mode controllers and high dynamics of peak current regulators.
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Theses
File URL :
http://docnum.univ-lorraine.fr/prive/INPL_T_2003_MARTIN_J_P.pdf
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https://hal.univ-lorraine.fr/tel-01750171
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Submitted on : Thursday, March 29, 2018 - 12:39:57 PM
Last modification on : Wednesday, October 14, 2020 - 4:07:23 AM

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Jean-Philippe Martin. Contribution à l'alimentation en tension de machines synchrones à aimants permanents à nombre de phases élevé : fonctionnement normal et degradé. Autre. Institut National Polytechnique de Lorraine, 2003. Français. ⟨NNT : 2003INPL043N⟩. ⟨tel-01750171⟩

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