Grid Forming Operation for a High Step Ratio Modular Multilevel DC-DC Converter

Carlos Cerda, Felix Rojas, Cristian Pineda, Javier Pereda, Matias Diaz, Gustavo Gatica

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Recently, Modular Multilevel Converters (MMCs) have become an attractive solution for MV applications. MMCs can handle high voltage levels by interconnecting either full-or half-bridge converters in series, achieving high performance, modularity and excellent power quality. Although most of the reported MMC converters are proposed to interface AC voltages at least in one port, few topologies have been reported for direct DC-DC conversion, mainly intended for interconnection of two DC grids, focusing the most of the reports on the modulation and internal balancing of the converter. In this paper, the output voltage of a high-step ratio DC-DC MMC is controlled to operate as a grid forming converter. Simulation results show excellent performance of the converter, achieving internal voltage balancing and zero current switching operation(ZCS) under steady-state and transient response.

Original languageEnglish
Title of host publication2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages494-498
Number of pages5
ISBN (Electronic)9781728169903
DOIs
Publication statusPublished - 28 Sep 2020
Event11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 - Dubrovnik, Croatia
Duration: 28 Sep 20201 Oct 2020

Publication series

Name2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020

Conference

Conference11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
CountryCroatia
CityDubrovnik
Period28/09/201/10/20

Keywords

  • Control design
  • DC-DC MMC

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Control and Optimization

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