Hybrid modular multilevel converter based multi‐terminal DC/DC converter with minimised full‐bridge submodules ratio considering DC fault isolation

Multilevel Modular DC/DC Converter for Regenerative Braking Using Supercapacitors

Regenerative braking is presented in many electric traction applications such as electric and hybrid vehicles, lifts and railway. The regenerated energy can be stored for future use, increasing the efficiency of the system. This paper outlines the benefits of the MMC (modular multilevel converter) in front of the cascaded or series connection of converters to achieve high voltage from low volta...

The Modular Multilevel Converter for High Step-Up Ratio DC-DC Conversion

High step-up ratio DC-DC converters with megawatt ratings are of interest in wind turbine interfaces and high-voltage direct-current systems. The modular multilevel DC-DC converter based on the standard boost converter topology but with the normal single switches replaced by a number of capacitor-clamped sub-modules. The converter is operated in resonant mode with resonance between sub-module c...

Modified Modular Multilevel Converter

The modular multilevel converter (MMC) is receiving extensive research interests in high/medium voltage applications due to its modularity, scalability, reliability, high voltage capability and excellent harmonic performance. The submodule capacitors are usually quite bulky since they have to withstand fundamental frequency voltage fluctuations. To reduce the capacitance of these capacitors, th...

A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

Georgios Konstantinou 1,*, Josep Pou 2, Daniel Pagano 3 and Salvador Ceballos 4 1 School of Electrical Engineering and Telecommunications, University of New South Wales (UNSW) Australia, Sydney, NSW 2052, Australia 2 School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore; [email protected] 3 Federal University of Santa Catarina, Florianópol...

Step up dcdc converter pdf