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Research Article Open Access
This paper study the modified direct torque control strategy of squirrel-cage induction motor using three-level inverter is presented. By using this method we can control the torque of induction motor.Look up table give the variable voltage to the inverter. It is observed that the torque ripples are much in two-level inverter as compared to three level ineverter. This is because of the high dv/dt ratio of the output voltage of inverter. These produces torque ripples in steady state. Transient and steady state are used to show the performance of machine.MATLAB/Simulink software is used. The control strategy is simulated on a 5 hp SQIM drive with three-level insulated-gate bipolar transistor (IGBT) inverter in MATLAB/Simulink software.
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Author(s): Sonal D.Wankhade, M.R.Salodkar.
DTC, Three level inverter, SQIM ,look up table ,vectors., Electrical Machines,Electromagnetic Transients Programs EMTP),Diagnosis and Sensing Systems.