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Energies
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Microgrids in Industry, Integration of Renewable Energy in Industry
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Microgrids in Industry, Integration of Renewable Energy in Industry

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A1: Smart Grids and Microgrids".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 7155

Special Issue Editors

Dr. Kumars Rouzbehi

E-Mail Website
Guest Editor
Department of System Engineering and Automatic Control, University of Seville, 41004 Seville, Spain
Interests: AC/DC grid control; operation and protection
Dr. Juan Manuel Escaño

E-Mail Website
Guest Editor
Systems and Automation Engineering Department, University of Seville, 41004 Sevilla, Spain
Interests: systems and control; model predictive control; neurofuzzy systems; fault-tolerant systems
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Vijay Sood

E-Mail Website
Guest Editor
Department of Electrical, Computer and Software Engineering, Ontario Tech University, Oshawa, ON L1G 0C5, Canada
Interests: HVDC and FACTS controllers for power transmission systems; modeling of power electronics converters; control and protection of power systems; microgrids
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Carlos Bordons

E-Mail Website
Guest Editor
Laboratory of Engineering for Energy and Environmental Sustainability, University of Seville, 41004 Sevilla, Spain
Interests: AC/DC microgrid control; microgrids; model-predictive control
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Conventional power systems are evolving into smart grids which incorporate renewable energy sources and storage units interfaced through power electronics converters. These systems are the important keys to use smart, flexible, techno-economic techniques for the reliable operation and cost-effective utilization of electricity grids. Some of the key concerns with these new systems are the lack of inertia in the grid and the two-way flow of power that require advanced control methods and modern protection strategies to ensure the demand/supply balance and dynamic stability of the grid. This Special Issue focuses on the recent achievements and advancements in overcoming these challenges.

Dr. Kumars Rouzbehi
Dr. Juan Manuel Escaño
Prof. Vijay K. Sood
Prof. Dr. Carlos Bordons
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 submissions that pass pre-check are 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. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). 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

  • AC/DC microgrids
  • Smart microgrids
  • Microgrids in industry
  • Renewable energy integration
  • Control of AC/DC microgrids
  • operation of AC/DC microgrids
  • Protection of AC/DC microgrids

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Published Papers (2 papers)

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Research

14 pages, 1736 KiB  
Article
Power Generation Analysis of Terrestrial Ultraviolet-Assisted Solid Oxide Electrolyzer Cell
by Muhammad Salim Butt, Hifsa Shahid, Farhan Ahmed Butt, Iqra Farhat, Munazza Sadaf, Muhammad Raashid and Ahmad Taha
Energies 2022, 15(3), 996; https://doi.org/10.3390/en15030996 - 28 Jan 2022
Cited by 1 | Viewed by 2803
Abstract
This paper presents a novel system design that considerably improves the entrapment of terrestrial ultraviolet (UV) irradiance in a customized honeycomb structure to produce hydrogen at a standard rate of 7.57 slpm for places with a UV index > 11. Thermolysis of high [...] Read more.
This paper presents a novel system design that considerably improves the entrapment of terrestrial ultraviolet (UV) irradiance in a customized honeycomb structure to produce hydrogen at a standard rate of 7.57 slpm for places with a UV index > 11. Thermolysis of high salinity water is done by employing a solid oxide electrolyzer cell (SOEC), which comprises three customized, novel active optical subsystems to filter, track, and concentrate terrestrial UV solar irradiance by Fresnel lenses. The output of systems is fed to a desalinator, a photovoltaic system to produce electrical energy, and a steam generator with modified surface morphology to generate the required superheated steam for the SOEC. A simulation in COMSOL Multiphysics ver. 5.6 has shown that a customized honeycomb structure, when incorporated on the copper–nickel surface of a steam generator, improves its absorptance coefficient up to 93.43% (48.98%—flat case). This results in generating the required superheated steam of 650 °C with a designed active optical system comprising nine Fresnel lenses (7 m2) that offer the concentration of 36 suns on the honeycomb structure of the steam generator as input. The required 1.27 kW of electrical power is obtained by concentrating the photovoltaic system using In0.33Ga0.67N/Si/InN solar cells. This production of hydrogen is sustainable and cost effective, as the estimated cost over 5 years by the proposed system is 0.51 USD/kg, compared to the commercially available system, which costs 3.18 USD/kg. Full article
(This article belongs to the Special Issue Microgrids in Industry, Integration of Renewable Energy in Industry)
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21 pages, 4965 KiB  
Article
An Improved Virtual Inertia Control Strategy for Low Voltage AC Microgrids with Hybrid Energy Storage Systems
by Ruiming Liu, Shengtie Wang, Guangchen Liu, Sufang Wen, Jianwei Zhang and Yuechao Ma
Energies 2022, 15(2), 442; https://doi.org/10.3390/en15020442 - 9 Jan 2022
Cited by 23 | Viewed by 2986
Abstract
This paper proposes a novel virtual inertia control (VIC) method based on a feedforward decoupling strategy to address the low inertia issue of power-converter-interfaced microgrids. The feedforward control scheme is employed to eliminate the coupling between active and reactive power caused by line [...] Read more.
This paper proposes a novel virtual inertia control (VIC) method based on a feedforward decoupling strategy to address the low inertia issue of power-converter-interfaced microgrids. The feedforward control scheme is employed to eliminate the coupling between active and reactive power caused by line impedance. The active power-voltage droop can be applied to the battery converter in the hybrid energy storage system (HESS). A novel VIC method is developed for the supercapacitor (SC) converter of HESS to increase the inertia of the microgrid. Detailed small-signal modeling of the SC converter with the proposed VIC was conducted, and the transfer function model was obtained. Parameter analysis of the virtual inertia and virtual damping was carried out with the pole-zero map method, and the step response characteristic of output voltage amplitude with power variation was analyzed in detail, deriving the parameter design principle. The simulation study verifies the effectiveness and validity of the proposed control strategy. The proposed feedforward decoupling method and VIC can be widely applied in microgrids to enhance inertia and improve their power quality. Full article
(This article belongs to the Special Issue Microgrids in Industry, Integration of Renewable Energy in Industry)
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