An H-Bridge Modular DC-DC Converter with Bidirectional Flyback-Based Energy Equalization Modules

Ahmed Elserougi, Ahmed Massoud, Shehab Ahmed

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

9 Scopus citations

Abstract

Conventional Modular Multilevel Converter (MMC) is a promising candidate in high-voltage high-power applications. Unfortunately, operating the conventional MMC with DC output voltage results in unbalanced capacitors' voltages. In literature, Dual Half Bridge (DHB)-based Energy Equalization Modules (EEMs) concept was presented; where EEMs can be employed with phase shift control to transfer energy between the upper and lower submodules (SMs) in the same leg to keep balanced capacitors voltages with low ripples during the DC/low frequency operation of the conventional MMC. In this paper, an H-bridge Modular DC-DC converter with flyback-based EEMs is presented. The bidirectional flyback-based EEMs provide the needed energy equalization task simply by operating the flyback converter with 50% duty cycle; which is simpler when compared with the DHB-based EEMs. Detailed illustration of the proposed architecture is presented. Simulation results are presented to show the effectiveness of the bidirectional flyback-based EEMs.

Original languageEnglish (US)
Title of host publication2018 5th International Conference on Electric Power and Energy Conversion Systems, EPECS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781538664575
DOIs
StatePublished - Aug 21 2018
Event5th International Conference on Electric Power and Energy Conversion Systems, EPECS 2018 - Kitakyushu, Japan
Duration: Apr 23 2018Apr 25 2018

Publication series

Name2018 5th International Conference on Electric Power and Energy Conversion Systems, EPECS 2018

Conference

Conference5th International Conference on Electric Power and Energy Conversion Systems, EPECS 2018
Country/TerritoryJapan
CityKitakyushu
Period04/23/1804/25/18

Keywords

  • Energy Equalization Module
  • modular multilevel converter

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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