제어로봇시스템학회:학술대회논문집
- 2001.10a
- /
- Pages.139.4-139
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- 2001
A Sensorless Vector Control System for Induction Motors Using Stator Current Difference
- Park, Chul-Woo (Kyungpook National University) ;
- Choi, Byeong-Tae (Kyungpook National University) ;
-
Kwon, Woo-Hyen
(Kyungpook National University)
;
- Ku, Bon-Ho (Kyungil Univ) ;
- Youn, Kyung-Sub (Kyungil Univ)
- Published : 2001.10.01
Abstract
The thesis propose the sensorless vector control method that estimates the rotor speed using stator current. The estimated speed is used as feedback in a vector control system. The conventional MRAS structure has a problem the error output is decreasing as estimated speed error is increasing and the estimation performance is not robust when mutual inductance has been changed. In the proposed method, error output is proportional to estimated speed error. The described technique is less complex, robust to variations of mutual inductance. This new method can achieve much wider bandwidth speed control than that of the conventional MRAS structure.
Keywords