The modular multilevel matrix converter (M3C) is a promising topology for high-voltage high-
power applications. It features easy scalability, high-quality input and output waveforms …

This paper studies a battery energy storage system based on the hexagonal modular
multilevel direct ac/ac converter with focus on a control method for state-of-charge (SOC) …

Modular multilevel converters (MMC) with conventional control are subjected to large
capacitor voltage ripples, especially at low-line-frequencies. It is proved that with appropriate …

Hexagonal modular multilevel converter (HMMC) is a full-bridge ac/ac converter, and it can
achieve the interconnection between the ac grid and the low frequency system. However …

A fractional frequency transmission system (FFTS) is the most competitive choice for long
distance transmission of offshore wind power, while the Hexverter, as a newly proposed …

In this paper, an enneagon multi-level converter (E-MMC) is proposed, which can directly
connect six-phase wind power generator to AC grid. It has the advantages of high efficiency …

Nonagonal modular multilevel converter (NMMC) is a three-port ac/ac/ac conversion
converter, and it can achieve the connection of two fractional frequency transmission …

This paper presents a hexagonal-cascaded multilevel converter for two-motor asynchronous
drive application. By adding an ac input to the hexagonal configuration, this multilevel …

A new loop power controller (LPC) applying three-phase AC/AC Hexagonal Modular
Multilevel Converter (HMMC) is introduced in which the secondary side is connected to the …

In this paper, a novel control system for the Hexverter-based drive is proposed and
analysed. Unlike previously proposed control schemes, the proposed one does not require …