Abstract
This paper focuses a new modified multi-level DC link inverter with reduced switches. It presents a comparative analysis of the modified inverter with the existing cascaded H-bridge multilevel inverter (CHBMLI) fed with induction motor drive. The modified multilevel dc link inverter (MLDCL) which is proposed greatly minimizes the switch count as well as the number of gate drivers compare to other family of multilevel inverters. PWM technique which has been applied for proposed inverter and CHBMLI is level shifted multi carrier PWM. An exhaustive survey has taken to investigate the performance characteristics such as total harmonic distortion (THD) and efficiency of various levels of inverter. For the meticulous analysis eleven-level DC link inverter and the existing eleven-level CHBMLI are built using MATLAB/SIMULINK platform. The proposed inverter is observed to have a better performance and relatively less cost compared with the conventional scheme.
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