New topology for hybrid multilevel inverter

A new topology for hybrid multilevel inverter is presented, which significantly increases the level number of output waveform and thereby dramatically reducing the low order harmonics and total harmonic distortion. To the best of the authors´ knowledge, the presented topology has the greatest level number for a given number of stages. Moreover, the stage with higher DC-link voltage has less switching frequency, thereby reducing the switching losses. Comparison results of various multilevel inverters are investigated in this paper to reflect the merits of the presented new topology. The details of PWM control using harmonic elimination technique for the new hybrid inverter is presented and confirmed by both simulation and experimental results.