Special Issue "Microgrids 2018"

A special issue of Inventions (ISSN 2411-5134). This special issue belongs to the section "Inventions and Innovation in Electrical Engineering/Energy/Communications".

Deadline for manuscript submissions: closed (30 June 2018)

Special Issue Editors

Guest Editor
Prof. Dr. Josep M. Guerrero
Highly Cited - Clarivate Analytics (formerly Thomson Reuters)

Microgrid Research Programme, Department of Energy Technology, Aalborg University Pontoppidanstraede 111, room 25, 9220 Aalborg, Denmark
Website | E-Mail
Interests: microgrids; minigrids; islanded energy systems; distributed generation; renewable energy; hierarchical control; distributed control; maritime microgrids, onboard grids
Co-Guest Editor
Prof. Juan C. Vasquez
Highly Cited - Clarivate Analytics (formerly Thomson Reuters)

Department of Energy Technology, Aalborg University, Pontoppidanstræde 111, Aalborg Ø 9220, Denmark
Website | E-Mail
Interests: microgrids; renewable energy; Minigrids; distributed generation; islanded energy systems; distributed and hierarchical control; IoT-based smart energy homes

Special Issue Information

Dear Colleagues,

Microgrids are small scale energy grids that can operate independently or autonomously from the main energy grid. They can contain generation, storage and consumption of any form of energy, including electricity, heat, etc. The concept supposed to eliminate or reduce the use of energy transmission systems, to produce energy near to consumption points, thus, constituting small distribution systems. This new energy paradigm is changing the way we conceive electrical, thermal, gas, or water grids. This Special Issue includes, but is not limited, to the following topics:

  • AC, DC and AC-DC hybrid microgrids
  • Power electronics based microgrids
  • Small scale renewable energies and storages for microgrids
  • Micro CHP systems for microgrids
  • Multiple microgrid clusters
  • Microgrids and nanogrids for rural areas and under developing countries
  • Microgrids for all/hybrid electrical ships and green ports
  • Microgrids for electrical vehicle charging stations
  • Advanced control techniques for microgrids
  • Smart metering and power quality for microgrids
  • Internet of things and energy Internet for multiple microgrids
  • Reviews on the state-of-the-art in the area of microgrids

Prof. Dr. Josep M. Guerrero
Prof. Juan Carlos Vasquez Quintero
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Inventions is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) is waived for well-prepared manuscripts submitted to this issue. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microgrids
  • power electronics
  • renewable energy
  • photovoltaic systems
  • wind energy
  • energy storage
  • islanded grids
  • distributed control
  • hierarchical control
  • internet of things
  • energy internet
  • maritime
  • shipboard power systems

Published Papers (1 paper)

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Research

Open AccessArticle An Improved Control Strategy for Three-Phase Power Inverters in Islanded AC Microgrids
Received: 7 June 2018 / Revised: 2 July 2018 / Accepted: 10 July 2018 / Published: 11 July 2018
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Abstract
Microgrids (MGs) are composed of multiple distributed generators (DGs) interfaced to micronetwork through paralleled connected power inverters (PIs). Load sharing among multiple DG units is an important task for autonomous operation of microgrids. In order to realize satisfactory power sharing and voltage regulation
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Microgrids (MGs) are composed of multiple distributed generators (DGs) interfaced to micronetwork through paralleled connected power inverters (PIs). Load sharing among multiple DG units is an important task for autonomous operation of microgrids. In order to realize satisfactory power sharing and voltage regulation between DG units, different voltage droop control strategies have been reported in the literature. In the medium voltage (MV) microgrids, power sharing, and voltage regulation often deteriorate due to dependence on nontrivial feeder impedances. The conventional control strategies are subject to steady-state active and reactive power-sharing errors along with system voltage and frequency deviations. Furthermore, complex microgrid configurations either in looped or meshed networks often make power balancing and voltage regulations more challenging. This paper presents an improved control strategy that can be extended for radial networks in order to enhance the accuracy of power sharing and voltage regulation. The proposed control strategy considers load voltage magnitude regulation as opposed the voltage regulation at inverters terminals. At the same time, a supervisory control loop is added to observe and correct system frequency deviations. This proposed method is aimed at replacing paralleled inverter control methods hitherto used. Simulation studies of the proposed scheme in comparison with the conventional control strategy in MATLAB/Simulink validate the effectiveness of the proposed strategy. Full article
(This article belongs to the Special Issue Microgrids 2018)
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