In this paper, a new 9-level inverter
employing switched capacitor technique is proposed.
Three bidirectional voltage blocking switches are
employed to connect the four H-bridges and to
incorporate the three switched capacitors. The proposed
multilevel inverter (MLI) circuit outputs a 9-level
waveform with a maximum boosting factor of four.
Unlike the already established switched capacitor based
MLI consisting of two stages the proposed MLI is single
stage inverter. The switches in the proposed MLI is
subjected to a low value of voltage stress equal to Vdc.
The proposed MLI is further analyzed by using various
multicarrier sinusoidal PWM technique such as Phase
Shift PWM (PSPWM), Phase disposition PWM
(PDPWM), Phase Opposition Disposition PWM
(PODPWM), Alternate Phase Opposition Disposition
PWM (APODPWM) and Variable Frequency PWM
Keywords : Multilevel inverter, boosting-factor, Switched Capacitor (SC), PDPWM, PODPWM, APODPWM, VFPWM, COPWM, PSPWM.