Effects of virtual resistor in power electronic converter on subsynchronous oscillation damping

Arwindra Rizqiawan, Goro Fujita, Toshihisa Funabashi, Masakatsu Nomura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Virtual impedance concept provides the impedance effects without need to put real physically impedance in the circuit. In power system, oscillation will not occur as long as the impedance seen by turbine-generator set is 'passive'. In order to ensure the impedance is seen as 'passive' by the turbine-generator set, a series resistor can be placed in the system. This paper proposes implementation of virtual resistor concept in grid connected power electronic converter to replaced the aforementioned series resistor, then analyze its impact on subsynchronous oscillation phenomena. It can be shown that virtual resistor can improve the negative region of converter input admittance. Moreover, it also gives us better damping in system involving grid connected inverter.

Original languageEnglish
Pages (from-to)540-546
Number of pages7
JournalIEEJ Transactions on Electrical and Electronic Engineering
Volume6
Issue number6
DOIs
Publication statusPublished - 2011 Nov

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Keywords

  • Converter input admittance
  • Subsynchronous oscillation damping
  • Virtual resistor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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