This paper describes the numerical simulation of the stator currents, flux and torque controls of an AC motor. The control priciple used is based on the orientation on the rotor flux. The originality of this simulation consists in the method used to simulate the startor currents control. In particular, in order to reduce the computing time, we make use of the sliding mode control theory which is quite adapter for the study of controls that use commutation command devices. In this paper, we will describe in detail the sliding mode simulation of the stator currents control and we will deal briefly with the simulation of the flux and torque controls.