PN admittance characterisation of grid supporting VSC controller with negative sequence regulation and inertia emulation

Callum Henderson, Agusti Egea Alvarez, Lie Xu

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)
19 Downloads (Pure)

Abstract

This work presents an analysis of converter output admittance for grid supporting VSC controllers in the positive – negative frame (pn-frame). Previously discovered issues in other reference frames are explored to prove the efficacy of analysis in the pn-frame The effect of negative sequence control is often overlooked and the pn-frame offers a useful method for observing the result. The impact of control parameters such as PLL bandwidth was explored which decreased network damping and increased regions of negative incremental impedance. Reduction of unwanted admittance components was achieved by the addition of appropriately tuned voltage feedforward filters. The equivalence of inertia and droops has been documented previously but not utilising converter impedance. Analogous traces of impedances were obtained for each structure with a similar response obtained when changing the respective associated gain indicating an equivalence.
Original languageEnglish
Title of host publication2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe)
Place of PublicationPiscataway, N.J.
PublisherIEEE
Number of pages10
ISBN (Electronic)9789075815375
DOIs
Publication statusPublished - 25 Oct 2021
Event23rd European Conference on Power Electronics and Applications - Virtual
Duration: 6 Sept 202110 Sept 2021
http://www.epe2021.com/

Conference

Conference23rd European Conference on Power Electronics and Applications
Abbreviated titleEPE'21
Period6/09/2110/09/21
Internet address

Keywords

  • impedance analysis
  • synthetic inertia
  • droop control
  • grid-connected converter
  • converter control

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