Nonlinear control of induction motors: a performance study

An approach to control of induction motors, based on nonlinear state feedback has previously been presented by the authors (1997). The resulting scheme gives a linearized input-output decoupling of the torque and the amplitude of the field. The proposed approach is used to design controllers for the field amplitude and the motor torque. The method is compared with the traditional rotor field oriented control method as regards variations in rotor resistance an magnetizing inductance.