Passivity analysis and enhancement of voltage control for voltage-source converters

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

1 Citation (Scopus)

Abstract

The grid-forming control is increasingly used with distributed generation systems either in grid-connected mode or islanded mode. The voltage control is essential to a grid-forming converter, which is generally realized with a dual-loop voltage-current control. This paper evaluates the passivity of the output impedance of the dual-loop voltage control, where two voltage regulators are compared, and it turns out that the non-passive region is inevitable in the high-frequency range, which may lead to harmonic instability. An output current feedforward control is then proposed to eliminate the non-passive region below the Nyquist frequency. Lastly, simulations and experimental results corroborate the analysis.
Original languageEnglish
Title of host publicationProceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages6
PublisherIEEE Press
Publication dateSep 2019
Pages5424-5429
Article number8912790
ISBN (Electronic)978-1-7281-0395-2
DOIs
Publication statusPublished - Sep 2019
Event2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, United States
Duration: 29 Sep 20193 Oct 2019

Conference

Conference2019 IEEE Energy Conversion Congress and Exposition (ECCE)
CountryUnited States
City Baltimore
Period29/09/201903/10/2019
SeriesIEEE Energy Conversion Congress and Exposition
ISSN2329-3721

Keywords

  • Current feedforward
  • Harmonic stability
  • Passivity
  • Voltage control
  • Voltage-source converter

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