Consensus-based droop control synthesis for multiple power converters in lossy micro-grids

Lin Yu Lu, Chia Chi Chu

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

6 Scopus citations

Abstract

Due to inherent distributed and heterogeneous nature of the micro-grid, the micro-grid becomes an ideal platform for consensus-based control. Conventionally, power sharing in a micro-grid is achieved by autonomous P-f and Q-V droop control on individual inverters, which suffers from the dependence on output line impedance. Inaccurate reactive power sharing will occur under strongly non-uniform line impedance. In this paper, the consensus-based P-f/Q-V and P-V/Q-F droop control with sparse communication network is proposed. When the line impedances of the grid is either lossy or even purely resistive, the operation principle of the proposed droop control is presented. In addition, the stability of the closed-loop system is studied by the transient energy function approach. Real-time simulations of a 14-bus micro-grid system are studied to validate the effectiveness of the proposed droop control method.

Original languageEnglish
Title of host publicationProceedings of 2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2013
PublisherIEEE Computer Society
ISBN (Print)9781479925223
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2013 - Kowloon, Hong Kong
Duration: 08 12 201311 12 2013

Publication series

NameAsia-Pacific Power and Energy Engineering Conference, APPEEC
ISSN (Print)2157-4839
ISSN (Electronic)2157-4847

Conference

Conference2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2013
Country/TerritoryHong Kong
CityKowloon
Period08/12/1311/12/13

Keywords

  • Micro-grid
  • P-V
  • Q-V
  • consensus-based
  • droop control
  • energy function
  • real-time

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