An Enhanced Control Scheme for Uninterruptible Power Supply

Jinghang Lu, Mehdi Savaghebi, Baoze Wei, Josep M. Guerrero

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

1 Citation (Scopus)
458 Downloads (Pure)

Abstract

To address the active power feeding issue in the parallel Uninterruptible Power Supply (UPS) system, a DC-link Voltage Protection (DCVP) control strategy is proposed in this paper. The proposed control method only relies on local load information, which increases the system reliability and robustness. Moreover, virtual resistance based regulation strategies are proposed for solving the active power sharing imbalance caused by the active power feeding and harmonic power sharing imbalanced caused by the line resistance mismatching. In addition, an anti-windup based consensus distributed controller is proposed to solve the overshoot issue during the transient time in voltage and frequency restoration. With the proposed anti-windup controller, large overshoot issue is alleviated. Finally, the feasibility of the proposed methods is verified by experimental results from the parallel UPS prototypes.
Original languageEnglish
Title of host publicationProceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages8
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)
Country/TerritoryUnited States
CityCincinnati, Ohio
Period01/10/201705/10/2017
SeriesIEEE Energy Conversion Congress and Exposition
ISSN2329-3721

Keywords

  • Anti-windup
  • DC-link Voltage Protection
  • Uninterruptible Power Supply (UPS)
  • Power sharing
  • Virtual resistance

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