Virtual resistance-based control strategy for DC link regeneration protection and current sharing in uninterruptible power supply

Jinghang Lu, Yajuan Guan, Mehdi Savaghebi, Josep M. Guerrero

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2 Citations (Scopus)
329 Downloads (Pure)

Abstract

To address the DC link voltage regeneration issue in parallel Uninterruptible Power Supply (UPS) system, a DC link voltage protection (DCVP) method through online virtual resistance regulation is proposed. The proposed control strategy is able to protect the DC link from overvoltage that may trigger the protection mechanism of the UPS system. Moreover, a current sharing control strategy by regulating the virtual resistance is proposed to address the circulating current caused by the active power feeding. Finally, the feasibility of the proposed method is verified by experimental results from a parallel UPS prototype.
Original languageEnglish
Title of host publicationProceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages7
PublisherIEEE Press
Publication dateOct 2017
ISBN (Electronic)978-1-5090-2998-3
DOIs
Publication statusPublished - Oct 2017
Event2017 IEEE Energy Conversion Congress and Exposition (ECCE) - Cincinnati, Ohio, United States
Duration: 1 Oct 20175 Oct 2017

Conference

Conference2017 IEEE Energy Conversion Congress and Exposition (ECCE)
CountryUnited States
CityCincinnati, Ohio
Period01/10/201705/10/2017
SeriesIEEE Energy Conversion Congress and Exposition
Volume2017
ISSN2329-3721

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Keywords

  • Current sharing
  • DC-link voltage protection
  • Droop control
  • Microgrid
  • Virtual resistance
  • UPS

Cite this

Lu, J., Guan, Y., Savaghebi, M., & Guerrero, J. M. (2017). Virtual resistance-based control strategy for DC link regeneration protection and current sharing in uninterruptible power supply. In Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE) IEEE Press. IEEE Energy Conversion Congress and Exposition, Vol.. 2017 https://doi.org/10.1109/ECCE.2017.8096769