Comparative Performance Analysis of DTC fed Three-Phase and Five-Phase Induction Motor

Abstract

This paper presents a comprehensive comparative analysis between a three-phase induction motor and five-phase induction motor, both of which are controlled using a direct torque control (DTC) based algorithm. The analysis is based on their respective mathematical models. Also, DTC algorithm for both the machine drives is discussed in the paper. The main focus of this analysis is based on their torque response under fixed and variable load. Also, the torque ripple content is another important parameter where evident differences is observed between the two induction motor drives. A DTC based three-phase induction motor has proved to be a very effective drive, however, it develops considerable ripple content and is less fault tolerant. These drawbacks are overcome in a five-phase induction motor along with effective controlling due to DTC algorithm. This comparative analysis is based on simulation design of both the drives using MATLAB/SIMULINK.