A Comparative Analysis of the Indirect Field-Oriented Control with a Scalar Method for IM Speed Control

벡터제어와 스칼라제어에 의한 유도전동기의 속도제어성능 비교

To control speed or torque of induction motors, scalar control method that regulates the value of stator current had been used conventionally. But, vector control method which contrls the direction and the value of stator current at the same time has been introduced lately and employed widely. This paper describes comparative analyses of above two methods by computer simulation. As a result of the simulation, both methods showed good responses for high speed, but, vector control method characterized much better performance for low speed and sinusoidal input.