This article considers the design methodology and modulation of quasi-Z-source modular multilevel converter (qZS-MMC) with half-bridge submodules (HBSMs) evaluates its performance in voltage boosting mode for medium applications. The qZS-MMC consists two qZS networks inserted between terminals dc input source dc-link an MMC, which allows generation output larger than voltage. Two schemes have b...

This paper compares two finite-control-set model predictive control (FCS-MPC) strategies in the context of a grid-connected single-phase quasi-Z source inverter (SP-qZSI). Both schemes use discrete-time models inductor current and capacitor voltage for DC side, as well output on AC side. To enhance converter’s performance, given non-minimum phase characteristics long prediction horizon is imple...

The application of the Z-source/quasi-Z-source inverter exacerbates hazard common mode voltage in motor drives or photovoltaic systems. existing reduced common-mode pulse width modulation (RCMV-PWM) technique applied to has solved problem suppression a certain extent, but its switching losses have not been optimized. In this paper, Active zero-state PWM (AZSPWM) and remote state (RSPWM) strateg...

The conventional DC-link type quasi-Z-source inverter has been known as a buck–boost with low component voltage rating. This paper proposes an active by adding one switch and diode to the impedance-source network enhance gain of inverter. As result, rating is significantly reduced, which demonstrated through some comparisons between proposed topology others. A discontinuous pulse width modulati...