Microgrid Stability Analysis Considering Current State-Feedback

Bahram Pournazarian, Meysam Saeedian, Matti Lehtonen, Shamsodin Taheri, Edris Pouresmaeil*

*Corresponding author for this work

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

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Abstract

A converter-based microgrid including several distributed generations (DG) and energy storage systems (ESS) embodies a small power system consisting of several synchronous machines and loads. The stability issue and the coordination between generating units is an essential challenge, either in island or in grid-connected microgrids. The instability of individual DGs cause the microgrid instability as a whole. So, the individual unit stability and the microgrid stability both must be ensured simultaneously. The state feedback concept which is considered in control of converters has a substantial effect on the converter stability and microgrid stability, subsequently. This study will introduce a small-signal model for the microgrid including converter-based DGs and loads considering the previous studies in this field. A phase locked loop (PLL) is required for the control strategy. The effect of current state feedback is scrutinized and analyzed in this study as the main contribution. The effectiveness of the proposed control strategy to enhance the microgrid stability using chosen state feedback is examined through simulation studies. The simulation results ensure that the microgrid stability using the proposed control method and state-feedback is strengthened.
Original languageEnglish
Title of host publicationProceedings of the 11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
PublisherIEEE
Pages193-198
Number of pages6
ISBN (Electronic)978-1-7281-6990-3
DOIs
Publication statusPublished - 2020
MoE publication typeA4 Article in a conference publication
EventIEEE International Symposium on Power Electronics for Distributed Generation Systems - Virtual conference
Duration: 28 Sep 20201 Oct 2020
Conference number: 11

Publication series

NameIEEE International Symposium on Power Electronics for Distributed Generation Systems
PublisherIEEE
ISSN (Print)2329-5759
ISSN (Electronic)2329-5767

Conference

ConferenceIEEE International Symposium on Power Electronics for Distributed Generation Systems
Abbreviated titlePEDG
Period28/09/202001/10/2020
OtherVirtual conference

Keywords

  • Microgrid
  • Small-signal stability
  • State feedback
  • Island operation

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