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Trends and Prospects in DC–DC/DC–AC Converters and Their Control Techniques for Renewable Energy Applications

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A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F3: Power Electronics".

Deadline for manuscript submissions: 15 May 2024 | Viewed by 2595

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Special Issue Editors

Prof. Dr. Ramy Georgious

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Guest Editor

LEMUR Group, Department of Electrical Engineering, University of Oviedo, 33204 Gijon, Spain
Interests: energy storage systems; control systems; power electronic converters; microgrids; renewable energy; design and simulation

Dr. Sarah Saeed

E-Mail Website
Guest Editor

LEMUR Group, Department of Electrical Engineering, University of Oviedo, 33204 Gijon, Spain
Interests: modelling and control of power electronic converters; design and construction of DC/DC converter topologies; energy storage systems; nonlinear magnetics

Special Issue Information

Dear Colleagues,

The upcoming journal Issue for Energies, entitled "Trends and Prospects in DC-DC/DC-AC Converters and their Control Techniques for Renewable Energy Applications", aims to bring together the latest research on DC–DC/DC–AC converters and their control techniques for use in renewable energy applications. This includes the latest trends in converter topologies, modulation techniques, and control strategies for improving energy conversion efficiency and reducing costs.

Potential authors are encouraged to submit research papers that present original and innovative contributions to the field. Topics of interest include, but are not limited to advanced converter topologies, soft switching techniques, resonant converters, multilevel converters, and power electronic interfaces for use in renewable energy systems.

In addition, the journal Issue welcomes papers on advanced control strategies for DC–DC/DC–AC converters, including discussions of voltage / current mode control, predictive control, sliding mode control, PID control, and model predictive control. These control techniques can improve the dynamic performance of power converters and enhance their reliability.

Overall, the journal Issue aims to provide a comprehensive overview of the latest research on DC–DC/DC–AC converters and their control techniques for use in renewable energy applications. It is intended to constitute a useful resource for researchers, engineers, and practitioners working in the field of power electronics and renewable energy systems.

Prof. Dr. Ramy Georgious
Dr. Sarah Saeed
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

DC–DC/DC–AC converters
control strategies
modulation techniques
renewable energy
power electronics

Published Papers (3 papers)

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Research

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19 pages, 6658 KiB

Open AccessArticle

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

by Tarak Ghennam, Lakhdar Belhadji, Nassim Rizoug, Bruno Francois and Seddik Bacha

Energies 2024, 17(9), 2214; https://doi.org/10.3390/en17092214 - 04 May 2024

Viewed by 277

Abstract

Wind power systems, which are currently being constructed for the electricity worldwide market, are mostly based on Doubly Fed Induction Generators (DFIGs). To control such systems, multilevel converters are increasingly preferred due to the well-known benefits they provide. This paper deals with the control of a standalone DFIG-based Wind Energy Conversion System (WECS) by using a three-level Neutral-Point-Clamped (NPC) converter. The frequency and magnitude of the stator output voltage of the DFIG are controlled and fixed at nominal values despite the variable rotor speed, ensuring a continuous AC supply for three-phase loads. This task is achieved by controlling the DFIG rotor currents via a PI controller combined with a new Simplified Direct Space Vector Modulation strategy (SDSVM), which is applied to the three-level NPC converter. This strategy is based on the use of a line-to-line three-level converter space vector diagram without using Park transformation and then simplifying it to that of a two-level converter. The performance of the proposed SDSVM technique in terms of controlling the three-level NPC-converter-based standalone WECS is demonstrated through simulation results. The whole WECS control and the SDSVM strategy are implemented on a dSPACE DS 1104 board that drives a DFIG-based wind system test bench. The obtained experimental results confirm the validity and performance in terms of control. Full article

(This article belongs to the Special Issue Trends and Prospects in DC–DC/DC–AC Converters and Their Control Techniques for Renewable Energy Applications)

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15 pages, 2286 KiB

Open AccessArticle

Voltage Sag Detection and Compensation Signal Extraction for Power Quality Mitigation Devices

by Lutfu Saribulut and Arman Ameen

Energies 2023, 16(16), 5999; https://doi.org/10.3390/en16165999 - 16 Aug 2023

Viewed by 967

Abstract

The importance of voltage quality is continuously increasing in electrical networks due to the rising manufacturing costs resulting from system faults and disturbances in utility dynamics. Researchers generally prefer reference-frame transformation-based methods to detect and mitigate these disturbances. However, these methods are adversely affected during unbalanced loading and disturbances due to their direct dependence on system dynamics (currents and voltages). In this study, a new and simple method based on Clarke transformation is proposed to detect disturbances and generate compensation signals for Power Quality Mitigation Devices. The aim is to address the deficiencies of existing approaches. Firstly, the Clarke transformation is introduced through the vector presentation. Then, the mathematical derivation of the proposed method is provided to enhance readers’ understanding. The voltage sag detection and compensation signal extraction of its control algorithm for a Dynamic Voltage Restorer is illustrated graphically. Subsequently, a simple power system is created using a simulation program. Balanced and unbalanced voltage disturbances are applied to the test system to demonstrate the validation of the proposed method under distorted system conditions. The results of voltage sag detection and compensation signal extraction for both the proposed and existing methods are compared at the end of the case studies. Full article

(This article belongs to the Special Issue Trends and Prospects in DC–DC/DC–AC Converters and Their Control Techniques for Renewable Energy Applications)

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Review

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20 pages, 1079 KiB

Open AccessReview

Review of DC-DC Partial Power Converter Configurations and Topologies

by Omar Gsous, Reem Rizk, Arsenio Barbón and Ramy Georgious

Energies 2024, 17(6), 1496; https://doi.org/10.3390/en17061496 - 21 Mar 2024

Viewed by 807

Abstract

The Partial Power Processing (PPP) concept has garnered attention as it enables the down-sizing of converter and component ratings. Unlike conventional power processing, PPP addresses a portion of the transferred power, leading to a reduction in conversion losses. Throughout this paper, the state of the art of isolated and non-isolated DC-DC converter topologies will be revised. Partial Power Converter (PPC) systems represent one of the main streams of PPP, which, based on isolation requirements and converter connections, can further be divided into isolated converters, such as: Input-Parallel-Output-Series (IPOS), Input-Series-Output-Parallel (ISOP), and, Input-Series-Output-Series (ISOS), or non-isolated converters. This work intends to evaluate and differentiate the characteristics of each type of topology while developing analytically possible connections that may require further research and reviewing metrics that help in fair comparisons of different PPC arrangements, operating under different conditions. A thorough revision is provided for DC-DC converter topologies due to their increased importance in present-day applications, such as energy storage, Electric Vehicles (EVs), and Photo-Voltaics (PVs). Full article

(This article belongs to the Special Issue Trends and Prospects in DC–DC/DC–AC Converters and Their Control Techniques for Renewable Energy Applications)

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