A Bifurcation Study of Droop-Controlled Inverter-Based Microgrids with Dynamic Loads

Sheng Jie Huang, Der-Cherng Liaw*

*Corresponding author for this work

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

1 Scopus citations

Abstract

The paper studies the dynamical behavior of droop-controlled inverter-based microgrids with dynamic loads. A result for determining the corresponding local stability property of the system at each equilibrium point is derived. Sufficient conditions for the parameters to ensure system stability of the microgrids are also obtained. Saddle-node bifurcation was found to occur while the reactive power demand increases to the stability limit of the system. Existence conditions for such an unstable phenomenon are calculated by employing the bifurcation theory on the proposed system model. Numerical simulations for an example of six-order testing system have demonstrated the validity of the proposed results.

Original languageEnglish
Title of host publication2021 21st International Conference on Control, Automation and Systems, ICCAS 2021
PublisherIEEE Computer Society
Pages1814-1819
Number of pages6
ISBN (Electronic)9788993215212
DOIs
StatePublished - 12 Oct 2021
Event21st International Conference on Control, Automation and Systems, ICCAS 2021 - Jeju, Korea, Republic of
Duration: 12 Oct 202115 Oct 2021

Publication series

NameInternational Conference on Control, Automation and Systems
Volume2021-October
ISSN (Print)1598-7833

Conference

Conference21st International Conference on Control, Automation and Systems, ICCAS 2021
Country/TerritoryKorea, Republic of
CityJeju
Period12/10/2115/10/21

Keywords

  • Bifurcation analysis
  • droop control
  • dynamic loads
  • inverters
  • microgrids

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