New Hybrid Multilevel Inverter Fed Induction Motor Drive - A Diagnostic Study

This paper elucidates the comparative study of multilevel inverter topologies fed induction motor drive, which extensively increase the level number of output waveforms and thereby dramatically reducing the lower order harmonics and total harmonics distortion. However, the stage with higher DC link voltage has lower switching frequency and thereby, reduces the switching losses. In conventional methods, need of converters to supply the cells of reversible multi level inverters increases the cost and losses. The Hybrid Multi level inverter and New Hybrid Multi level inverter are compared with same number of switches with different value of dc sources. Based on the comparison of the topologies, the new hybrid H bridge multilevel inverter gives twenty seven level outputs resulting in more advantages. The key attention has been on the excellence of output waveform and the result obtained with the developed experimental setup. Copyright (C) 2010 Praise Worthy Prize S.r.L - All rights reserved.