This paper proposes a novel T-type multilevel inverter (MLI) based on the switched-capacitor technique. The proposed not only achieves that maximum voltage stress of switches is less than input but also has boost capability, which makes it suitable in high applications. It worth mentioning features two topology extension schemes help achieve higher output level and gain. With merit low reduced ...

This paper aims to point out and demonstrate the opportunities enabled by wide-bandgap (WBG) devices for multilevel converters, contributing international technology roadmap WBG power semiconductors (ITRW). The emergence of silicon carbide (SiC) gallium nitride (GaN) offers new push boundaries converter performances. Featuring high single-device blocking voltage ultra-low switching loss, can en...

This paper is a licentiate compilation-thesis that aims to bring clarity to the dimensioning aspects and limiting factors of modular multilevel converters. The dc-capacitor in each submodule is a driving factor for the size and weight of the converter. This means that it is important to distribute the stored energy evenly among all submodule capacitors. Typically, an increased switching frequen...

The performance of D-STATCOM depends on capacitor voltage regulation. In D-STATCOM, the nonlinear controller is preferred to linear controller. Regulating and fixing the capacitor DC voltage in DSTATCOM can improve the system dynamic such as capacitor voltage response, current response and modulation index. The regulation of DC capacitor voltage based on optimal PI co-efficient. In conventional...

The multilevel inverter (MLI) has been developed as a powerful power conversion scheme for several processes, including renewable energy, transmission systems, and electric drives. It become popular across medium- to high-power operations due its many advantages, minimum harmonic content, low switching losses, reduced electromagnetic interference (EMI). In this paper, the capacitor voltage bala...

This article declares a simple voltage balancing and decoupling control methodology for four-level flying capacitor converter. The proposed approach only uses two proportional controllers to balance the voltages one additional proportional-integral controller regulate output without sensing inductor current. decoupled design reduces interactions between regulating loop loop. Eventually, 400-W p...