This thesis describes the modeling, the simulation and the implementation of vector control for a variable speed drive system of multiphase permanent magnet synchronous machines. The considered machines have non salient surface-mounted rotors. After a review of the classical theory of vector control, we adapt this method to control a machine that has an odd number of stator winding phases greater than three.; A simplified model in Simulink/MATLAB is developed to study this control method. After having illustrated this method, we present a test bench implemented with a DSP. We carry out validations for two machines; the first with a three-phase stator and the other with a seven-phase stator.; To illustrate the advantage of the presented control method, we show that the use of a harmonic of EMF of a multiphase machine can produce a constant torque. We analyze also the operation with one phase open without modifying the control strategy in order to show the fault tolerance of multiphase machines.
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