A Study on Parameter On-line Estimation of Induction Motor using MRAS

MRAS를 이용한 유도전동기의 파라미터 온라인 추정에 관한 연구

  • Published : 2002.07.01

Abstract

This paper presents a method for on-line estimation of rotor time constant of induction motor. The proposed method applies a model reference adaptive system(MRAS) using rotor flux vector. The MRAS consists of two independent observers to estimate the rotor flux vector; one based on voltage equations of rotor flux vector, the other based on current equations of them. The MRAS utilizes concept of auxiliary variables to normalize observer output and decrease high-frequency components of its input. Experimental results verify the validity and usefulness of proposed method

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