An Efficiency Analysis of 27 Level Single-Phase Asymmetric Inverter without Regeneration

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 obtained, using n 3 cascade NLM modulation, generates a flow power load (regeneration). This work analyzes semiconductor losses (switching conduction) THD function index considering non-regenerative modulation technique for 27-level single-phase inverter. To confirm theoretical analyzes, simulation experimental results shown.