The emerging switched-capacitor-based multilevel inverters offer interesting merits such as self-balancing of capacitor voltages and boosting voltage gain. While the switched capacitors (SCs) in these topologies are charged parallel with dc source, severe current spikes issue is inevitable, rendering them impractical at high power. This article proposes a novel T-type inverter that mitigates by...

In the three-level DC-DC converter-based bipolar DC microgrids, accurate power sharing among distributed generators and voltage balancing between positive negative poles are two main control objectives. This article presents a resilient bi-level strategy which simultaneously satisfies both aforementioned The proposed structure is combination of consensus-based cooperative method washout filter-...

This paper proposes the use of a Modular Marx Multilevel Converter, as a solution for energy integration between an offshore Wind Farm and the power grid network. The Marx modular multilevel converter is based on the Marx generator, and solves two typical problems in this type of multilevel topologies: modularity and dc capacitor voltage balancing. This paper details the strategy for dc capacit...

To provide transmission-line voltage support, a static compensator (STATCOM) offers the optimal solution in terms of price, reliability, and dynamic performance. Simpler layout for switches, reduced component count and smaller dc-link capacitor values are the attractive features of the proposed topology over the diode clamped and cascaded multilevel converter. Two dc-link voltage sources with v...

This paper provides a detailed comparative study concerning the performance of min-projection strategy (MPS) and model predictive control (MPC) systems to control the three-phase grid connected converters. To do so, first, the converter is modeled as a switched linear system. Then, the feasibility of the MPS technique is investigated and its stability criterion is derived as a lower limit on th...

A three-phase four-leg inverter-based shunt active power filter (APF) is proposed to compensate three-phase unbalanced currents under unbalanced load conditions in grid-connected operation in this study. Since a DC-link capacitor is required on the DC side of the APF to release or absorb the instantaneous apparent power, the regulation control of the DC-link voltage of the APF is important espe...

The optimization of both dc link voltages and switching angles of fundamental switching strategy for the output waveform of a multilevel cascade inverter is investigated in this study. Previous work in the area of fundamental switching for multilevel inverters is highlighted by the pulse width optimization technique, where the switching angle at each voltage level is optimized, so that the resu...

in this paper, a dc-dc resonant converter with high voltage gain and small size is studied. to reduce the size and weight of this converter, the operating frequency should be as high as possible. in this research, the frequency changes from 120 to 200 khz. due to the high operating frequency, it is necessary to reduce the switching losses using soft switching methods. resonant converters are su...