Modélisation et commande de la machine synchrone à réluctance variable : prise en compte de la saturation magnétique

Abstract : This memory deals with the modelling and the control of a synchronous reluctance machine with a squirrel cage. The first part is dedicated to the development of a model with the magnetic saturation effects. This model is based on a modification of Park's equations. The magnetic saturation is considered by a variable coefficient according to the set of the currents circulating in the machine. This model presents the advantage to show up the measurable electrical parameters. The second part is dedicated to the validation of the saturated model. We have compared results of simulation with the experimental results. We have studied the case where the machine is connected directly to the line and the case where the machine is under vector control. In the case of the vector control, we have studied the effects of the saturation on the dynamics and on the steady states for a torque control and a speed control. The third part deals with the development of two strategies of control for the steady state. The first strategy allows to get the maximal torque for a given current. The control law is obtained with the equations of the saturated model. The second strategy consists in optimising the efficiency of the machine. The minimum of the electrical power is searched by using algorithms of optimisation (Fibonacci, golden section). The experimental results showed the feasibility of an in-line optimum research with a system using a DSP (Digital Signal Processor).
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Thierry Lubin. Modélisation et commande de la machine synchrone à réluctance variable : prise en compte de la saturation magnétique. Autre. Université Henri Poincaré - Nancy 1, 2003. Français. ⟨NNT : 2003NAN10017⟩. ⟨tel-01748101⟩

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