For medium voltage applications, multilevel inverters are used. One of its classic topologies is the Cascaded H-Bridge, which requires isolated DC voltages to work. Depending on ratio used in H-bridge can be classified into symmetric and asymmetric. In comparison between asymmetric inverters, latter generate an AC output with more levels. most documented binary trinary. The last 3n = 27 levels ...

Analysis of the reason of cascade H-bridge inverter topology using carrier phase shift modulation method cannot compensate the harmonic, using carrier level layered modulation method can solve the problem of cascade H-bridge topology that it cannot compensate harmonic problems. Experimental results show that the modulation algorithm can effectively reduce the modulation delay, improve the contr...

Leakage current in a transformerless cascaded H-bridge (CHB) inverter is problem that deteriorates the system performance and causes safety concerns. In this article, common-mode equivalent circuit established for analyzing occurrence of leakage an m-level CHB with either asymmetrical or symmetrical inductance output filter configurations. The analysis provides comparison between traditional ph...

This paper proposed the comparison made between Multi-Carrier Pulse Width Modulation, Sinusoidal Pulse Width Modulation and Selective Harmonic Elimination Pulse Width Modulation technique for minimization of Total Harmonic Distortion in Cascaded H-Bridge Multi-Level Inverter. In Multicarrier Pulse Width Modulation method by using Alternate Position of Disposition scheme for switching pulse gene...

In this paper, an H-bridge inverter topology with reduced switch count technique is introduced. This technique reduces the number of controlled switches used in conventional multilevel inverter. To establish a single phase system, the proposed multilevel inverter requires one H-bridge and a multi conversion cell. A multi conversion cell consists of three equal voltage sources with three control...