Projeto iterativo de controladores para motor de indução.

Abstract

In this work contributions for the areas of identification of systems in closed loop and PI controllers tunning are presented, for induction motors with the blocked rotor. The iterative combination of identification in closed loop and re-design of the controller is called Iterative Control. The aim of the iterative control is to obtain high performance closed loop systems using reduced complexity models. Thus, the current control of the induction motor with the blocked rotor is considered, using techniques of iterative design of controllers. The transfer function current estimation of the induction motor is made using three different methods of identification in closed loop: least-squares, indirect method and output error. And the PI controller tunning is performed by a methodology of iterative designs using the methods of: conventional pole placement, generalized pole placement and incremental pole placement, that have well defined performance and stability properties.