Decentralized voltage regulation in islanded DC microgrids in the presence of dispatchable and non-dispatchable DC sources

Mohammadreza Nabatirad, Reza Razzaghi, Behrooz Bahrani

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

Voltage control in islanded DC Microgrids (MGs) is essential in the presence of various types of DC Distributed Generation (DG) units. This paper proposes a control system to accurately share loads among dispatchable DG units in a decentralized way, while the DC network voltage is regulated. The non-dispatchable DG units can operate independently interfacing a voltage-regulated network. To this aim and for providing decentralized load sharing, the conventional droop control is modified by defining a voltage compensation term. The proposed control system utilizes a superimposed AC voltage to adjust the voltage compensation term. This term shifts the terminal voltage of DG units proportional to the frequency of the AC voltage component. The importance of synchronization for the superimposed AC voltage in the dispatchable and non-dispatchable DG units is discussed in this paper. Also, the performance of the proposed control system is validated by a set of simulation studies using PLECS.

Original languageEnglish
Title of host publication2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)
EditorsSjoerd Bosga
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages1-10
Number of pages10
ISBN (Electronic)9789075815368
DOIs
Publication statusPublished - 2020
EventEuropean Conference on Power Electronics and Applications 2020 - Lyon, France
Duration: 7 Sep 202011 Sep 2020
Conference number: 22nd
https://ieeexplore.ieee.org/xpl/conhome/9205178/proceeding

Publication series

Name2020 22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe

Conference

ConferenceEuropean Conference on Power Electronics and Applications 2020
Abbreviated titleEPE 2020 ECCE Europe
CountryFrance
CityLyon
Period7/09/2011/09/20
Internet address

Keywords

  • Energy system management
  • Microgrid
  • Power management
  • Renewable energy systems

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