Comparative Analysis of scalar & vector control of Induction motor through Modeling & Simulation

Abstract: The main objective is implementation of scalar & vector control of three phase induction motor drives. Scalar control as the name indicates is due to magnitude variation of control variable only disregards any coupling effect in the induction machine. The scalar control is very simple method for controlling the speed of induction motor compared to the vector control which is more complex. Vector control is completely mathematical model on control of torque and speed of a three-phase indirect vector controlled induction motor drive. In this paper, an implementation of speed control of an induction motor (IM) using indirect vector control method has been developed and simulated. The comparative study of VCIM and conventional v/f control of IM is done this work. The VCIM drive involves decoupling of the stator current component which produces torque and flux of induction motor. It is seen that it provides smooth speed control and compared to v/f control. Finally comprise the result of scalar and vector control technique.

Keywords: Induction Motor, Mathematical Modeling, Electric Machine Simulation, Scalar & Vector Control.