D-Decomposition Based Robust Discrete-Time Current Regulator for Grid-Connected VSI

I. Tyuryukanov, M. Popov

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)
19 Downloads (Pure)


The D-decomposition method allows to design control structures with prescribed locations of closed loop poles. Unlike the root locus method, D-decomposition natively handles two variable regulator parameters, which makes it suitable for more complex control structures. Moreover, an extension to more than two variable parameters is straightforward. In this paper, the advantages of the D-decomposition method are illustrated by synthesizing a robust low-order current regulator for a grid-connected voltage source inverter (VSI) with LCL filter. It is shown how to visualize the complete region in the low dimensional regulator parameter space satisfying certain robust performance criteria (with robust stability being a special case). The paper concludes by simulation results validating the robustness properties of the designed low-order regulator under substantial grid impedance variations.
Original languageEnglish
Title of host publication29th IEEE International Symposium on Industrial Electronics
Subtitle of host publication17-19 June 2020, online conference hosted in Delft, The Netherlands
Number of pages8
ISBN (Electronic)9781728156354
Publication statusPublished - 2020
Event29th IEEE International Symposium on Industrial Electronics - Delft, Netherlands
Duration: 17 Jun 202019 Jun 2020


Conference29th IEEE International Symposium on Industrial Electronics
Abbreviated titleISIE 2020
OtherVirtual/online event due to COVID-19
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Current control
  • D-decomposition
  • LCL-filter
  • robust performance
  • robust stability


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