삼상유도전동기의 속도제어를 위한 PLL System의 개선에 관한 연구

A study on the improvement of PLL system for three phase induction motor speed control

The study of PLL System to control the Speed of three phase induction motor is described. By solving some problems of conventional PLL system, the system has ability to be easily locked under any conditions. In order to study response velocity and stability of system, this paper presents different filter types and methods of determination of time constant.