Voltage balancing of modular smart transformers based on dual active bridges

Sante Pugliese, Markus Andresen, Rosa Mastromauro, Giampaolo Buticchi, Silvio Stasi, Marco Liserre

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

9 Citations (Scopus)

Abstract

Modular medium voltage power converters have gained increasing attention in context of Smart Transformers (STs) in the electrical distribution grid. A possible ST architecture can be built by a Cascaded H-Bridge (CHB) converter in the Medium Voltage side and Dual Active Bridges (DABs) in the isolation stage. One of the main issues in the CHB control is represented by the voltage balancing. This work investigates the control for the two converter stages comparing the voltage balancing by the MV stage with the voltage balancing by the isolation stage under unbalanced loading conditions. The proposed balancing technique, applied in the isolation stage is demonstrated to offer higher bandwidth than the commonly used balancing in the MV-stage, which is especially important in case of high number of CHB-cells and different power transfer of the CHB cells. These conclusions are supported by simulation and experimental results.

Original languageEnglish
Title of host publication2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1270-1275
Number of pages6
ISBN (Electronic)9781509029983
DOIs
Publication statusPublished - 3 Nov 2017
Externally publishedYes
Event9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States
Duration: 1 Oct 20175 Oct 2017

Publication series

Name2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
Volume2017-January

Conference

Conference9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
Country/TerritoryUnited States
CityCincinnati
Period1/10/175/10/17

ASJC Scopus subject areas

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

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