Comparison of Various Strategies in DTFC Based Multilevel NPC Inverter Fed Induction Drive for Torque Ripple Reduction

摘要: Multilevel inverters have become popular in recent years high power applications; they provide an effective solution for increasing and minimizing the harmonics of AC waveforms. The fast response robust method conventional direct torque control are used variable speed drives reduction ripple. However, major problems occur at steady-state notable torque, flux, current pulsations drives. This paper presents various strategies flux induction motors ripple based on a multilevel neutral point clamped (NPC) inverter. kind inverter is to achieve better harmonic reductions than traditional two-level voltage source related scheme serves minimize semiconductor losses. performance motor depends upon mathematical model that comprises variations parameters, common-mode voltage, noise, variation, levels machine. Here, ripples saturations most substantial electrical drive applications. To overcome this problem, (DTFC) technique NPC topology developed. Moreover, strategies-based DTFC proposed minimization IM An improved optimize regulation with less response. proposes comparative study THD analysis different techniques (PI, fuzzy, ANFIS) effectively moderation design inverter; goal achieved as shown from comparison simulation results using MATLAB/SIMULINK environment.