KLI

Effective Coordinated Virtual Impedance Control for Accurate Power Sharing in Islanded Microgrid

Metadata Downloads
Abstract
In a practical islanded microgrid system, the mismatched line impedance causes serious problems such as inaccurate power sharing and circulating current. In order to overcome these issues, this paper proposes a coordinated virtual impedance control strategy for distributed generation units (DGs). In the proposed control strategy, both virtual resistance and virtual inductance are simultaneously tuned to compensate the mismatched line impedance among DGs, and the microgrid system stability is enhanced by increasing damping for the whole system. Also, the virtual impedance is adaptively regulated in order to guarantee a good power sharing performance even if the communication is interrupted or the load changes suddenly. The controller design process and theoretical analysis of the whole system are presented in detail based on small signal analysis. The feasibility and effectiveness of the proposed control strategy were validated by simulations and experiments with a 1.3-kVA prototype microgrid composed of three DGs.
Author(s)
이홍희팜 민 득
Issued Date
2021
Type
Article
Keyword
DampingDroop control algorithmImpedanceInductanceislanded microgridMicrogridsOscillatorsReactive powerreactive power sharingResistancevirtual impedance
DOI
10.1109/TIE.2020.2972441
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9010
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_ieee_primary_8998579&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Effective%20Coordinated%20Virtual%20Impedance%20Control%20for%20Accurate%20Power%20Sharing%20in%20Islanded%20Microgrid&offset=0&pcAvailability=true
Publisher
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Location
미국
Language
영어
ISSN
0278-0046
Citation Volume
68
Citation Number
3
Citation Start Page
2279
Citation End Page
2288
Appears in Collections:
Engineering > Electrical engineering
Authorize & License
  • Authorize공개
Files in This Item:
  • There are no files associated with this item.

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.