A decentralized frequency and voltage control scheme for grid-forming inverters

Yemi Ojo, Jeremy D. Watson, Khaled Laib, Ioannis Lestas

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Grid-forming inverters-based autonomous microgrids present new operational challenges as the stabilizing rotational inertia of synchronous machines is absent. We propose in the paper a control architecture for frequency and voltage control with good scalability properties. At slower timescales it allows to incorporate a distributed secondary control policy for which we provide a stability result with line conductances taken into account. At faster timescale this control architecture satisfies a passivity property for a wide range of parameters. The distinctive feature of the voltage control scheme is that it has a double loop structure that uses the DC voltage in the feedback control policy to improve performance. The frequency control policy employs the inverter output current and angle to provide an improved angle droop policy. The performance of the control schemes is illustrated via advanced simulations.
Original languageAmerican English
Title of host publicationProceedings of 2021 IEEE PES Innovative Smart Grid Technologies Europe: Smart Grids: Toward a Carbon-Free Future, ISGT Europe 2021
Subtitle of host publicationSmart Grids: Toward a Carbon-Free Future, ISGT Europe 2021
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)9781665448758
ISBN (Print)978-1-6654-4876-5
DOIs
StatePublished - Dec 21 2021
Externally publishedYes
Event2021 IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe) - Espoo, Finland
Duration: Oct 18 2021Oct 21 2021

Publication series

NameProceedings of 2021 IEEE PES Innovative Smart Grid Technologies Europe: Smart Grids: Toward a Carbon-Free Future, ISGT Europe 2021

Conference

Conference2021 IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe)
Period10/18/2110/21/21

Keywords

  • Scalability
  • Europe
  • Inverters
  • Stability analysis
  • Feedback control
  • Smart grids
  • Voltage control

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