Abstract: The present invention concerns a method and a device for controlling a three-phase motor using a field oriented control system. The invention: —estimates, in a dq plane incremental inductances (I) and (II) of the motor, —determines an incremental saliency (III) of the motor as a ratio between the incremental inductance (I) and the incremental inductance (II), —estimates a first current id* from the estimated incremental saliency (III) and a reference incremental saliency ISR*, —estimates the rotor speed value (IV) of the motor, —estimates a second current iq* from a reference rotor speed value ?*, and the estimated rotor speed value (IV), —controls the voltage applied to the motor according to the first and second estimated currents.