Comparative Study of Scalar and Vector Control of Induction Motor by using PI Controller

The major purpose of this paper is to implement and study the scalar and vector control on three phase induction motor drives. In scalar control method stator voltage and frequency ratio kept constant. It is also called V/F control. The scalar method is very simple controlling method as compare to vector control which is more complex. Vector control related to phasor control of induction machine. The VCIM drive includes decoupling of the stator current component which produces torque and flux of induction motor. In this paper, an implementation of speed control of an induction motor (IM) using indirect vector control procedure has been developed and simulated. The comparative study of VCIM and traditional V/F control of IM is done on MATLAB/SIMULINK software. Results show the effectiveness of vector control over scalar control method.