A Study ofDirect Torque Control for Three-Level InverterFed Induction Motor Drive

Abstract

This paper offers the comparative evaluation of various level of multilevel inverter for induction motor torque rippleminimization.A three-stage neutral-factor-clamped inverter-fed induction motor power is proposed in this paper. Thetraditional direct torque manipulate (DTC) switching desk fails to remember the circuit barriers, equivalent to neutralpoint-balance and gentle vector switching, brought on by using the topology of a 3-degree inverter. Two sorts of modified schemes for three-level DTC are proposed to resolve these problems. They provide performance enhancement at the same time keeping robustness and simplicity.In the present undertaking the DTC is carried out by way of using area vector pulse width modulation (SVPWM) methodin an effort to acquire gentle operation of pressure. The obstacle of big beginning present will also be investigated and solved by introducing the system of preexcitation. The effectiveness of the proposed schemes is demonstrated through simulation making use of MATLAB/SIMULINKimplementation and experimental validation.