Indian Journal of Science and Technology

Abstract

This proposed paper studies the design and performance of a new ‘Dynamic voltage restorer’ (DVR) using a new hybrid 7 level PWM inverter. The new multilevel inverter is a combination of the capacitor clamped and the cascaded H-bridge type multilevel inverters. This new topology provides different levels of output voltages and high modularity. In the paper, the sag or swell are detected in a transmission line and the voltage is injected from the multilevel inverter through a boost transformer. Simulation results in matlab show that the performance of the new mixed multicell inverter is better than the traditional MLIs and normal inverters with the advantages like absence of the filter.