A Comparative Investigation of 13-Level, 23-Level and 33-Level Conventional Cascaded H-Bridge Multilevel Inverters By Using Simulink / Matlab

This paper aims to extend the knowledge about performance of different Cascade H-Bridge multilevel inverters (CHB-MLI) through harmonic analysis. Large utility applications require advanced power electronics converter to meet high power demands. As a result, multilevel power converter structure has been introduced as an alternative for high power and medium voltage situations. A multilevel converter not only achieves high power ratings, but also improves performance of the whole system in terms of harmonics, dv/dt stresses, and stresses in the bearings of a motor [1]. Multilevel inverters are becoming more popular in the power conversion systems for high power and power quality demanding applications. The MATLAB based simulation on SIMULINK platform is presented for Cascade H-Bridge multilevel inverter (CHB-MLI) topology of Single Phase cascaded H-bridge Multilevel Inverter for 13, 23, and 33-levels. A detailed comparison of Cascade H-Bridge multilevel inverters (CHB-MLI) are presented in the paper based on number of power devices used, Total Harmonic Distortion [1].