Design of robust controller for vector controlled induction motor based on Q-parameterization theory

This article is aimed at designing a robust-controller for vector-controlled induction motor drive systems based on the Q-parameterization theory. The set of all stabilizing controllers for the system is characterized by two free Q-parameters of the controllers. The Q-parameters are chosen using an optimization technique to satisfy the design requirements. To demonstrate the effectiveness of the proposed controller, the calculated motor speed and torque-producing current component in presence of core-loss are compared with those measured in the literature. Simulation results show that good response of the control system due to the step change-of-speed command/load torque can be achieved using the proposed controller.