Robust vector control of induction motor using full-order observer in consideration of core loss

This paper proposes a method for designing a robust full-order observer for vector-controlled induction motors taking core loss into account.. Although most of the literature focuses on parameter identification, the global stability of the identification remains questionable. There is therefore a need for robustness with respect, to some parameters. This paper describes the design of a robust full-order observer which takes core loss into account, using both gain-scheduled H/sub /spl infin// control and the linear matrix inequality (LMI) technique. This design always results in a stable controller. The robustness of the proposed method with regard to variation in certain resistance parameters is evaluated by means of experimental results.