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Electronics
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Power Electronics Applications in Microgrid and Distributed Generation
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Power Electronics Applications in Microgrid and Distributed Generation

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 9836

Special Issue Editors

Dr. Mahdi Shahparasti

E-Mail Website
Guest Editor
School of Technology and Innovations, Electrical Engineering, School of Technology and Innovations, University of Vaasa, 65200 Vaasa, Finland
Interests: power electronics; power conversion; power quality; renewable energy integration; microgrids
Special Issues, Collections and Topics in MDPI journals
Dr. Alvaro Luna

E-Mail Website
Guest Editor
Electrical Engineering Department, Universitat Politecnica de Catalunya (UPC), 08222 Barcelona, Spain
Interests: wind turbine control; integration of distributed generation; power conditioning
Dr. Payam Teimourzadeh Baboli

E-Mail Website
Guest Editor
Resilient Monitoring and Control, R&D Division Energy, OFFIS – Institute for Information Tecnology, 26121 Oldenburg, Germany
Interests: data science applications in automation and control of smart grids; integration of renewable energy systems in smart grids; energy management and demand response; power system reliability and resilience analysis

Special Issue Information

Dear Colleagues,

AC, DC, and hybrid AC–DC microgrids are introduced as the future electricity distribution network to utilize the benefits of direct and alternate currents. In microgrids, AC and DC loads, renewable energy-based distributed generators (DGs), controllable DGs, and energy storage systems (ESSs) are connected via separate AC and DC links. Therefore, microgrids can provide greater flexibility and easier power management over DGs, controllable loads, and ESSs rather than interconnecting those resources individually to the grid. Despite extensive research, the development of new power converter topologies and protection and control schemes remains demanding to reduce cost/volume and improve system efficiency and reliability.

Prospective authors are invited to submit original contributions or survey papers for publication in Electronics. Topics of interest for this Special Issue include but are not limited to the following topics in the field of hybrid AC–DC microgrid and DG:

  • Architecture and hardware design;
  • New power electronics topologies;
  • Design for reliability, resilience, and robustness;
  • Artificial intelligence techniques in power electronics systems,
  • Automation and communication issues in decenteralized control strategies;
  • Advanced and fault-tolerant control strategies;
  • Multilayer (hierarchical) control schemes;
  • Integration of renewable energy resources;
  • Innovative (hybrid) energy storage devices;
  • Energy management systems;
  • Control and power-sharing between converters;
  • Power quality and protection aspects;
  • Industrial, experimental, and hardware-in-the-loop tests and validation

Dr. Mahdi Shahparasti
Dr. Alvaro Luna
Dr. Payam Teimourzadeh Baboli
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. Electronics 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 2400 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

  • Microgrids
  • Distributed generation
  • Power quality
  • Renewable energy systems
  • (Hybrid) energy storage systems
  • Artificial intelligence
  • Power electronics
  • Energy management systems
  • New topologies of interlinking converters for microgrids

Published Papers (5 papers)

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Research

15 pages, 3241 KiB  
Article
Distributed Hierarchical Control for Islanded Microgrids Based on Adjustable Power Consensus
by Xiaofeng Wan and Jingwan Wu
Electronics 2022, 11(3), 324; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics11030324 - 20 Jan 2022
Cited by 5 | Viewed by 1471
Abstract
For the problem of power allocation in microgrid hierarchical control, a distributed hierarchical control strategy based on consensus algorithm is proposed. When the load suddenly increases, due to the different adjustable power of different distributed generators (DGs), overcharging and discharging of DGs will [...] Read more.
For the problem of power allocation in microgrid hierarchical control, a distributed hierarchical control strategy based on consensus algorithm is proposed. When the load suddenly increases, due to the different adjustable power of different distributed generators (DGs), overcharging and discharging of DGs will result if the increased load is not redistributed. The distributed hierarchical control strategy proposed in this paper defines the proportion between the local increased load and the local adjustable power as the response ratio. With the objective of ensuring that the frequency and voltage of the microgrid can be restored to their rated value, the response ratios of DGs are adjusted by applying the consensus algorithm. Further, the microgrid realizes the reasonable operation of the microgrid by dynamically distributing the increased load in real time. Finally, the feasibility and effectiveness of the proposed strategy is verified by analyzing the stability of the system and building a microgrid simulation model in the Matlab/Simulink simulation platform. Full article
(This article belongs to the Special Issue Power Electronics Applications in Microgrid and Distributed Generation)
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21 pages, 853 KiB  
Article
Economic Emission Load Dispatch Problem with Valve-Point Loading Using a Novel Quasi-Oppositional-Based Political Optimizer
by Vedik Basetti, Shriram S. Rangarajan, Chandan Kumar Shiva, Harish Pulluri, Ritesh Kumar, Randolph E. Collins and Tomonobu Senjyu
Electronics 2021, 10(21), 2596; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics10212596 - 24 Oct 2021
Cited by 19 | Viewed by 2201
Abstract
In the present paper, a novel meta-heuristic algorithm, namely quasi-oppositional search-based political optimizer (QOPO), is proposed to solve a non-convex single and bi-objective economic and emission load dispatch problem (EELDP). In the proposed QOPO technique, an opposite estimate candidate solution is performed simultaneously [...] Read more.
In the present paper, a novel meta-heuristic algorithm, namely quasi-oppositional search-based political optimizer (QOPO), is proposed to solve a non-convex single and bi-objective economic and emission load dispatch problem (EELDP). In the proposed QOPO technique, an opposite estimate candidate solution is performed simultaneously on each candidate solution of the political optimizer to find a better solution of EELDP. In the bi-objective EELDP, QOPSO is applied to simultaneously minimize fuel costs and emissions by considering various constraints such as the valve-point loading effect (VPLE) and generator limits for a generation. The effectiveness of the proposed QOPO technique has been applied on three units, six units, 10-units, 11-units, 13-units, and 40-unit systems by considering the VPLE, transmission line losses, and generator limits. The results obtained using the proposed QOPO are compared with those obtained by other techniques reported in the literature. The relative results divulge that the proposed QOPO technique has a good exploration and exploitation capability to determine the optimal global solution compared to the other methods provided in the literature without violation of any constraints and bounded limits. Full article
(This article belongs to the Special Issue Power Electronics Applications in Microgrid and Distributed Generation)
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15 pages, 7638 KiB  
Article
Control and Validation of a Reinforced Power Conversion System for Upcoming Bioelectrochemical Power to Gas Stations
by Mahdi Shahparasti, Amirhossein Rajaei, Andres Tarraso, Jose David Vidal Leon Romay and Alvaro Luna
Electronics 2021, 10(12), 1470; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics10121470 - 18 Jun 2021
Cited by 1 | Viewed by 1553
Abstract
This paper presents a proposal for potential bioelectrochemical power to gas stations. It consists of a two-level voltage source converter interfacing the electrical grid on the AC side and an electromethanogenesis based bioelectrochemical system (EMG-BES) working as a stacked module on the DC [...] Read more.
This paper presents a proposal for potential bioelectrochemical power to gas stations. It consists of a two-level voltage source converter interfacing the electrical grid on the AC side and an electromethanogenesis based bioelectrochemical system (EMG-BES) working as a stacked module on the DC side. The proposed system converts CO2 and electrical energy into methane, using wastewater as the additional chemical energy input. This energy storage system can contribute to dampening the variability of renewables in the electrical network, provide even flexibility and grid services by controlling the active and reactive power exchanged and is an interesting alternative technology in the market of energy storage for big energy applications. The big challenge for controlling this system lays in the fact that the DC bus voltage of the converter has to be changed in order to regulate the exchanged active power with the grid. This paper presents a cascade approach to control such a system by means of combining external control loops with fast inner loops. The outer power loop, with a proportional-integral (PI) controller with special limitation values and anti-windup capability, is used to generate DC bus voltage reference. An intermediate loop is used for DC bus voltage regulation and current reference generation. A new proportional resonant controller is used to track the current reference. The proposed scheme has been validated through real-time simulation in OPAL OP4510. Full article
(This article belongs to the Special Issue Power Electronics Applications in Microgrid and Distributed Generation)
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15 pages, 1761 KiB  
Article
DC Current Limiting Operation and Power Burden Characteristics of a Flux-Coupling Type SFCL Connected in Series between Two Windings
by Seok-Cheol Ko, Tae-Hee Han and Sung-Hun Lim
Electronics 2021, 10(9), 1087; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics10091087 - 04 May 2021
Cited by 6 | Viewed by 1622
Abstract
In this paper, a DC fault short circuit was conducted to analyze the DC fault current limiting characteristics of a flux-coupling type superconducting fault current limiter (SFCL) that has two coils connected in series via one iron core. Similar to the AC power [...] Read more.
In this paper, a DC fault short circuit was conducted to analyze the DC fault current limiting characteristics of a flux-coupling type superconducting fault current limiter (SFCL) that has two coils connected in series via one iron core. Similar to the AC power system, the flux-coupling type SFCL in a DC system, which has the two coils connected with each other in series and the secondary coil connected with the superconducting element in parallel, remains in the superconducting state before a short-circuit accident occurs. This results in magnetic flux getting generated by the two windings connected in series offsetting each other and the induced voltage at the two windings remaining at zero. However, in the event of a short-circuit accident on the DC line, a resistance is generated on the superconducting element, so that the magnetic flux generated at the two windings no longer offsets each other. Therefore, a voltage is induced on the two windings, and the fault current is limited accordingly. As a result of configuring a DC short-circuit device and experimenting with this SFCL, we could confirm the DC fault current limiting effect of a flux-coupling type SFCL with two windings connected in series. In addition, we could establish performance conditions of the flux-coupling type SFCL in a DC system by inferring the fault current, operating current, and limited impedance equations according to the connection direction of the flux-coupling type SFCL with two windings connected in series and by analyzing fault current limiting degree, power burden, magnetic flux, and energy consumption for each element composing the SFCL. Full article
(This article belongs to the Special Issue Power Electronics Applications in Microgrid and Distributed Generation)
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16 pages, 1313 KiB  
Article
LQR-Based Adaptive Virtual Inertia for Grid Integration of Wind Energy Conversion System Based on Synchronverter Model
by Walter Gil-González, Oscar Danilo Montoya, Andrés Escobar-Mejía and Jesús C. Hernández
Electronics 2021, 10(9), 1022; https://0-doi-org.brum.beds.ac.uk/10.3390/electronics10091022 - 25 Apr 2021
Cited by 4 | Viewed by 1813
Abstract
This paper proposes adaptive virtual inertia for the synchronverter model implemented in a wind turbine generator system integrated into the grid through a back-to-back converter. A linear dynamic system is developed for the proposed adaptive virtual inertia, which employs the frequency deviation and [...] Read more.
This paper proposes adaptive virtual inertia for the synchronverter model implemented in a wind turbine generator system integrated into the grid through a back-to-back converter. A linear dynamic system is developed for the proposed adaptive virtual inertia, which employs the frequency deviation and the rotor angle deviation of the synchronverter model as the state variables and the virtual inertia and frequency droop gain as the control variables. In addition, the proposed adaptive virtual inertia uses a linear quadratic regulator to ensure the optimal balance between fast frequency response and wind turbine generator system stress during disturbances. Hence, it minimizes frequency deviations with minimum effort. Several case simulations are proposed and carried out in MATLAB/Simulink software, and the results demonstrate the effectiveness and feasibility of the proposed adaptive virtual inertia synchronverter based on a linear quadratic regulator. The maximum and minimum frequency, the rate change of the frequency, and the integral of time-weighted absolute error are computed to quantify the performance of the proposed adaptive virtual inertia. These indexes are reduced by 46.61%, 52.67%, 79.41%, and 34.66%, in the worst case, when the proposed adaptive model is compared to the conventional synchronverter model. Full article
(This article belongs to the Special Issue Power Electronics Applications in Microgrid and Distributed Generation)
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