A bidirectional DC-DC converter to interlink unipolar and bipolar DC microgrids

V. Fernao Pires, Daniel Foito, Armando Cordeiro, Armando José Pires

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

2 Citations (Scopus)

Abstract

DC microgrids are starting to become quite important in the actual context of electrical energy distribution grids. There are two main structures for these grids, the unipolar and the bipolar DC microgrids. In this paper, a DC-DC converter that allows to interlink these two DC microgrids is proposed. This converter is a non-isolated bidirectional DC-DC converter with bipolar and unipolar interfaces. The converter was designed to transfer energy between these microgrids and, at the same time, to support the balance of the bipolar DC microgrid. Moreover, the proposed converter is also able to operate as a standalone voltage balancer to support the bipolar DC microgrid. The converter also presents bidirectional buck-boost characteristics. Simulations and experimental results of the DC-DC converter operating in both directions will be provided. From the presented results, it will be possible to verify the capability of the converter to operate as interlink interface for both microgrids.

Original languageEnglish
Title of host publication9th International Conference on Smart Grid, icSmartGrid 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages37-42
Number of pages6
ISBN (Electronic)9781665445313
DOIs
Publication statusPublished - 29 Jun 2021
Event9th International Conference on Smart Grid, icSmartGrid 2021 - Virtual, Setubal, Portugal
Duration: 29 Jun 20211 Jul 2021

Conference

Conference9th International Conference on Smart Grid, icSmartGrid 2021
Country/TerritoryPortugal
CityVirtual, Setubal
Period29/06/211/07/21

Keywords

  • Bipolar DC microgrid
  • Buck-boost
  • DC-DC converter
  • Unipolar DC microgrid
  • Voltage balancer

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