Speed Control of Vector Controlled Induction Motor using Sliding Mode Controller and Zeta Converter

Induction motors are used as the major workhorse in the industry due to its robustness, high efficiency and maintenance free nature. Owing to the fact that the induction motor models are highly non linear they are very difficult to control compared to DC motors. Also the time varying nature of parameters and variables which can be changed during the operation of the drive system makes the designing of the proper controller difficult. The best suggested solutions to solve these parametric variations and load torque variations would be a Sliding Mode Controller (SMC). But while using SMC in a vector controlled induction motor drive the Power Factor of the system is considerably reduced. A Zeta converter is incorporated in the system which will improve the power factor and thereby reduces the power quality issues. This paper presents the designing and the simulation of a vector controlled induction motor drive using sliding mode controller with zeta converter. The simulation is done using MATLAB/SIMULINK. The proposed control scheme can be implemented in real-time applications since it does not involve high computational cost.