유도전동기의 과도특성 개선에 관한 연구

A study on the Improvement of Transient Response Characteristics of Induction Motor

In this thesis, a speed control algorithm using the observer is proposed for the high performance speed control of a 3-phase induction motor driven by a voltage source inverter. The proposed system becomes robust against disturbances by means of a feed-forward control of the load disturbance component estimated by the load disturbance observer. And also, for better estimation, we added phase compensator to the observer. Computer simulations and experimental works which compared proposed algorithm with the conventional PI control method showed that transient response for the variation of load torque becomes improved.