Passivation of Current-Controlled Grid-Connected VSCs Using Passivity Indices

Florian Hans, Walter Schumacher, Shih Feng Chou, Xiongfei Wang

Research output: Contribution to journalJournal articleResearchpeer-review

3 Citations (Scopus)
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Abstract

Passivity-based analysis and controller design offer a promising approach to guarantee the stability of power systems. If all grid-connected components act strictly passive, critical oscillations cannot arise. Recent research establishes design guidelines for current-controlled voltage-source converters that allow obtaining a nonnegative real part of the converter input admittance for a wide frequency range. In this paper, the findings are extended and generalized from a control engineering point of view. Utilizing passivity indices to quantify the degree of the input admittance's passivity, the current controller design is reviewed and assessed. Further, generic and necessary passivation design criteria are proposed and carried out exemplarily for passive as well as for active damping using voltage feed-forward filters. Finally, the theoretical findings are validated by experiments.

Original languageEnglish
Article number8556362
JournalIEEE Transactions on Industrial Electronics
Volume66
Issue number11
Pages (from-to)8971 - 8980
Number of pages10
ISSN0278-0046
DOIs
Publication statusPublished - Nov 2019

Keywords

  • Converter control
  • Passivity
  • Resonances
  • Stabilization
  • Voltage-source converter (VSC)

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