A triple-droop control scheme for inverter-based microgrids

F. Luo, Y. M. Lai, Chi Kong Tse, Ka Hong Loo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

12 Citations (Scopus)

Abstract

In this paper, a power management control scheme based on triple-droop control strategy is proposed for low-voltage microgrid system. The proposed control method is based on traditional P/f and Q/V droop control, but adds two other levels of droop control in response to the DC bus voltage conditions. One of them regulates the output power of micro-source (MS), while the other adjusts the output parameters of Droop Control 1. With this control scheme, the output power of MS can be adjusted automatically without the need for communication among the MS systems. The proposed control scheme is proven as capable of operating in both autonomous mode and grid-connected mode. In addition, the droop-controlled VSI systems ensure a smooth transition from grid-connected mode to autonomous mode without the need for mode-switching or communication. The design methodology of the triple-droop control scheme is presented in this paper. The effectiveness of the proposed scheme and design methodology are verified by simulation results on PSIM.
Original languageEnglish
Title of host publicationProceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Pages3368-3375
Number of pages8
DOIs
Publication statusPublished - 1 Dec 2012
Event38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012 - Montreal, QC, Canada
Duration: 25 Oct 201228 Oct 2012

Conference

Conference38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012
Country/TerritoryCanada
CityMontreal, QC
Period25/10/1228/10/12

Keywords

  • autonomous operation
  • Distributed generation (DG)
  • droop control
  • grid-connected inverters
  • microgrid
  • seamless mode transfer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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