A Comparative Analysis in Asymmetric Inverters Non - Regenerative

Multilevel inverters are the alternative for medium voltage applications. Within this type of inverters are the asymmetric inverters, which have different values in their DC voltages. The DC voltage ratios can be of the trinary or binary type, the first being the most documented, with which an AC voltage of 3
ⁿ
= 27 levels is obtained, using n = 3 inverters in cascade and NLM modulation, which generates a flow of power from the load to the inverters (regeneration). In this paper we analyze two types of non-regenerative singlephase asymmetric inverters, of 15 and 27 levels, where their quality of output voltage waveform (THD) and efficiency are analyzed. The latter will be focused on the commutation and conduction losses in the semiconductors. In such a way to be able to make a choice of the inverter considering these two indices. Finally to check what is proposed, simulation results are shown.