High-performance control by input-output linearization technique of an induction motor

The complete control design of an induction motor using input-output linearization technique is presented in this paper. The motor model, written in stationary reference frame, is nonlinear with respect to the state variables and linear in the control. The input-output linearizing controller decouples the flux control from the speed control, that makes the dynamics and level of speed and flux reference arbitrary. However, in practice, magnetic saturation and rotor time constant limit the evolution of the machine flux, and the inverter limits the evolution of the speed. In this paper an optimal trajectory of flux reference is generated maximizing the torque and taking into account the machine saturation and the motor limits. The implementation of the proposed scheme is discussed