Performance Analysis of modulation techniques for Induction motor fed by Diode-Clamped NPC Inverter

摘要

This paper presents speed control of induction motor fed by Neutral Point Clamped voltage source inverter. The NPC inverter produces fewer harmonic than the other type of inverter. This shows the advantage over conventional VSI. For this result, comparison is made between the sinusoidal pulse width modulation and space vector pulse width modulation. From the analysis of the total harmonic distortion (THD) in the current of inverter the space vector pulse width modulation (SVPWM) was found more superior than sinusoidal pulse width modulation (SPWM). Simulation results are also presented to show the effectiveness of the proposed system.