Impacts of Digital Filters on Admittance Dissipativity of Sequence Current Control for VSCs

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

Abstract

This paper analyzes the impacts of digital filters on the admittance dissipativity of dual-sequence current control for grid-connected voltage-source converters (VSCs). The output admittance model of VSC is first derived in the aß-frame with complex vectors, and then the frequency-domain dissipativity theory is employed to analyze the dynamic impacts of digital filters, revealing that the cascaded use of sequence-decomposition filter (SDF) and low-pass filter (LPF) in the voltage-feedforward (VFF) tends to induce a nondissipative region. Then, an analytical design method for the LPF is developed for mitigating the non-dissipative region. Lastly, the simulation and experimentresults verify the accuracy of the theoretical analysis.
Original languageEnglish
Title of host publication2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
PublisherIEEE
Publication dateNov 2020
Pages1-7
Article number9265667
ISBN (Electronic)9781728171609
DOIs
Publication statusPublished - Nov 2020
Event21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 - Aalborg, Denmark
Duration: 9 Nov 202012 Nov 2020

Conference

Conference21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Country/TerritoryDenmark
CityAalborg
Period09/11/202012/11/2020
SeriesIEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
ISSN1093-5142

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Digital filter
  • dissipativity
  • sequence control
  • voltage feed-forward

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