Reduced-Order Modelling Method of Grid- Connected Inverter With Long Transmission Cable

Weihua Zhou*, Yanbo Wang, Zhe Chen

*Corresponding author

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

6 Citations (Scopus)
22 Downloads (Pure)

Abstract

This paper presents a reduced-order modelling method for grid-connected inverter with long transmission cable (LTC). State-space models of inverter and LTC are first obtained from frequency characteristics of terminal impedance by applying vector fitting (VF) algorithm rather than conventional mathematical modelling. Then, Prony analysis (PA) and balanced truncation (BT) algorithms are employed to find an optimized order number of state-space model. Finally, a reduced-order model of grid-connected inverter with LTC is established by removing non-dominant poles of original state-space model. Simulation results show that the proposed reduced-order modelling method is able to accurately obtain dominated poles of system, and reveal practical terminal impedance characteristics. The proposed method may simplify modelling procedure and improve computational efficiency for small signal stability analysis.
Original languageEnglish
Title of host publicationProceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
Number of pages7
PublisherIEEE Press
Publication dateOct 2018
Pages4383-4389
ISBN (Print)978-1-5090-6685-8
ISBN (Electronic)978-1-5090-6684-1
DOIs
Publication statusPublished - Oct 2018
Event44th Annual Conference of the IEEE Industrial Electronics Society - Omni Shoreham Hotel, Washington, United States
Duration: 21 Oct 201823 Oct 2018
http://www.iecon2018.org/

Conference

Conference44th Annual Conference of the IEEE Industrial Electronics Society
LocationOmni Shoreham Hotel
CountryUnited States
CityWashington
Period21/10/201823/10/2018
Internet address
SeriesProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

Keywords

  • Grid-connected inverter
  • long transmission cable
  • reduced-order modelling
  • small-signal stability
  • vector fitting

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