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

Abstract

This paper proposes a method f o r designiny a robustfull-older observer f o r vector-controlled induction motors takiny core loss into account. Although most of the literature focuses o n parameter identification, the global stability of the identification remains questionable. There is therefore a need f o r 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 guan-scheduled H , 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 b y means of experimental results.

H/sub /spl infin// control of induction motor with efficiency maximum for HEVs

“…Masaru proposed a design of H ∞ full-order observer which takes core loss into account [8]. The robustness of the proposed method with regard to variation in certain resistance parameters did not take regeneration and field weakening into account.…”

Improved adaptive feedback linearization control of induction motors based on online estimation of core loss and rotor resistance

“…Modification of vector control technique with known core loss resistance have been reported in [3], [4], and [10]. Nevertheless, vector control decouples torque and flux control only in steady state, while input-output feedback linearization control does it in transient state as well [11,12].…”