An improved droop control scheme for islanded microgrids

M. I. Azim, M. J. Hossain, F. H.M. Rafi, H. R. Pota

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

11 Citations (Scopus)

Abstract

This paper proposes an improved droop control algorithm to ensure the proportional load distribution among multiple parallel inverter-sourced generators in a microgrid, operating in an islanded mode. The improvement is done by including derivative term in the conventional droop control scheme so that the oscillatory modes of the controller can be damped and better dynamic performance is achieved. The proposed controller is a two steps decentralized tunable controller; in which control gains are scheduled via small-signal stability analysis of the microgrid study system, consisting of three inverter-interfaced distributed-generation (DG) units and one static load. The performance of the proposed control method is verified by implementing it under diverse operating conditions and desired damped responses are obtained in all cases that can be seen from simulations.

Original languageEnglish
Title of host publicationProceedings of 2015 Australian Control Conference (AUCC 2015)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages225-229
Number of pages5
ISBN (Electronic)9781922107695, 9781922107701, 9781467395526
ISBN (Print)9781467367370
Publication statusPublished - 21 Dec 2015
Externally publishedYes
Event5th Australian Control Conference, AUCC 2015 - Gold Coast, Australia
Duration: 5 Nov 20156 Nov 2015

Other

Other5th Australian Control Conference, AUCC 2015
CountryAustralia
CityGold Coast
Period5/11/156/11/15

Keywords

  • derivative droop control
  • DG units
  • droop control
  • load sharing
  • microgrid
  • voltage-source converters (VSC)

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