A Decentralized Adaptive Control Method for Frequency Regulation and Power Sharing in Autonomous Microgrids

Rasool Heydari, Yousef Khayat, Mobin Naderi, Amjad Anvari-Moghaddam, Tomislav Dragicevic, Frede Blaabjerg

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Abstract

In this paper, a novel decentralized control structure is proposed to compensate voltage and frequency deviations of an ac microgrid (MG) with higher bandwidth compared to the conventional control structure with no need for a communication network. This approach is realized by firstly employing finite control set model predictive control of voltage source converter at the primary control level. Then, an adaptive droop control is presented to keep the voltage and frequency of the MG stable in steady state and serve as a secondary level of hierarchical control. Therefore, the MG voltage and frequency are restored to the nominal value with a decentralized communication-free control structure. Simulation results verify the accurate frequency and voltage restoration as well as fast power-sharing during the transient and steady-state performance with no need for communication infrastructure.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE 28th International Symposium on Industrial Electronics, ISIE
PublisherIEEE
Publication dateAug 2019
Pages2427-2432
ISBN (Print)978-1-7281-3667-7
ISBN (Electronic)9781728136660
DOIs
Publication statusPublished - Aug 2019
Externally publishedYes
Event28th IEEE International Symposium on Industrial Electronics, ISIE 2019 - Vancouver, Canada
Duration: 12. Jun 201914. Jun 2019

Conference

Conference28th IEEE International Symposium on Industrial Electronics, ISIE 2019
CountryCanada
CityVancouver
Period12/06/201914/06/2019
SponsorIEEE Industrial Electronics Society
SeriesIEEE International Symposium on Industrial Electronics (ISIE)
ISSN2163-5145

Keywords

  • Adaptive droop
  • frequency control
  • microgrid
  • model predictive control.
  • power sharing

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