A dynamic consensus algorithm based low-voltage ride-through operation of power converters in grid-interactive microgrids

Xin Zhao, Lexuan Meng, Mehdi Savaghebi, Juan C. Vasquez, Josep M. Guerrero, Xiaohua Wu

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The possibility of increasing penetration level of grid-interactive microgrids (MGs) has gained a great interest over the past decade. Thus, it is critical to investigate the performance of the MGs under voltage sags, since it may induce instability to the power grid. Negative sequence droop control based voltage support strategy has been proposed to aid MGs riding through three phase asymmetrical voltage sags. However, since the line impedance from each converter to the point of common coupling (PCC) is not identical, both positive sequence and negative sequence output current of the converters cannot be equally shared if no extra current balancing loop is added. Accordingly, a dynamic consensus algorithm (DCA) based negative/positive sequence current sharing scheme is proposed in this paper. Finally, a lab-scale AC microgrid was designed and tested in the lab to validate the feasibility of the proposed control method.

Original languageEnglish
Title of host publicationProceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society
PublisherIEEE Computer Society
Publication date21. Dec 2016
Pages3660-3665
Article number7794078
ISBN (Electronic)9781509034741
DOIs
Publication statusPublished - 21. Dec 2016
Externally publishedYes
Event42nd Conference of the Industrial Electronics Society, IECON 2016 - Florence, Italy
Duration: 24. Oct 201627. Oct 2016

Conference

Conference42nd Conference of the Industrial Electronics Society, IECON 2016
CountryItaly
CityFlorence
Period24/10/201627/10/2016
SponsorIEEE Industrial Electronics Society, Institute of Electrical and Electronics Engineers (IEEE)
SeriesIECON Proceedings (Industrial Electronics Conference)

Keywords

  • Consensus algorithm
  • Grid-interactive microgrid
  • Hierarchical control
  • Low-voltage ride-through

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