Predictive torque control of open-end winding induction motor drive fed with multilevel inversion using two two-level inverters

Abstract

This study proposes direct torque and flux control of dual-inverter-fed open-end winding induction motor (OEWIM) with the help of model predictive control. OEWIMs are extensively used in electric vehicles and for ship propulsion but they require a high dynamic performance. Predictive torque control (PTC) retains the features of direct torque control and offers a high dynamic performance by eliminating start-up problems. In this study, predictive torque control is implemented for multilevel inversion-fed OEWIMs. Multilevel inversion is obtained by operating two two-level inverters with equal and unequal DC link voltages. The proposed study gives a comparative analysis of PTC of OEWIM for various speeds and numerical analysis of torque ripple and flux ripple. The proposed methods are simulated using MATLAB/SIMULINK and experimental response shows the validity of the developed methods.