Stability analysis of grid-connected VSCs based on two-port network theory

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2 Citations (Scopus)

Abstract

The interactions between voltage source converters (VSCs) and the grid gains as increased attention both in academia and industry, especially frequency-coupled resonances. The frequency-coupling resonances can be described and analyzed using an asymmetrical multiple input multiple output (MIMO) system. The resonance frequency in a MIMO system is hard to identify with conventional impedance matrices when the MIMO system is marginally stable. In this paper, the grid-connected VSC is modeled as a two-port network. By deriving the loop gain of the two-port network with the source and load admittances, a stability analysis method can be proposed, which can identify the resonance frequencies effectively. Simulations and experimental results validate the theoretical analyses.
Original languageEnglish
Title of host publicationProceedings of 2019 IEEE Annual Applied Power Electronics Conference and Exposition (APEC 2019)
Number of pages8
PublisherIEEE
Publication dateMar 2019
Pages1165-1172
Article number8722063
ISBN (Electronic)978-1-5386-8330-9
DOIs
Publication statusPublished - Mar 2019
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: 17 Mar 201921 Mar 2019

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
CountryUnited States
CityAnaheim
Period17/03/201921/03/2019
SponsorIEEE Industry Applications Society (IAS), IEEE Power Electronics Society (PELS), Power Sources Manufacturers Association (PSMA)
SeriesIEEE Applied Power Electronics Conference and Exposition (APEC)
ISSN2470-6647

Keywords

  • Grid interaction
  • Impedance model
  • Stability
  • Two-port network
  • Voltage source converters (VSCs)

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    Chou, S. F., Wang, X., & Blaabjerg, F. (2019). Stability analysis of grid-connected VSCs based on two-port network theory. In Proceedings of 2019 IEEE Annual Applied Power Electronics Conference and Exposition (APEC 2019) (pp. 1165-1172). [8722063] IEEE. IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2019.8722063