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Optimization of DC Power Converter and the Applications
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Optimization of DC Power Converter and the Applications

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

Deadline for manuscript submissions: 15 July 2025 | Viewed by 1269

Special Issue Editors

Dr. Jianjun Ma

E-Mail Website
Guest Editor
College of Smart Energy, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: renewable energy integration; DC distributed power system; flexible AC/DC transmission and distribution; DC-DC converter
Dr. Jiangfeng Wang

E-Mail Website
Guest Editor
School of Electrical Engineering, Southeast University, Nanjing 210096, China
Interests: power electronics for renewable generation systems; wide bandgap power device application; power quality
Dr. Fan Xiao

E-Mail Website
Guest Editor
College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Interests: double active bridge; multi-port DC transformer; energy router; AC-DC hybrid distribution network
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Special Issue Information

Dear Colleagues,

The application of DC power electronics technology in renewable energy integration and efficient power supply holds enormous potential for future development. By optimizing circuits, modulation, and control strategies, the performance of power conversion—encompassing efficiency, stress, and reliability—can be significantly enhanced. This has markedly improved the efficiency, reliability, and flexibility of power systems, contributing substantially to the sustainable development and energy transformation of the power industry.

The purpose of this Special Issue is to collect articles (both original research articles and commentaries) on DC power converters, circuit and control optimization, and their applications. Additionally, it will cover topics such as DC distribution, DC power grids, and AC/DC hybrid distribution systems, offering scholars in this field valuable insights on these subjects.

Dr. Jianjun Ma
Dr. Jiangfeng Wang
Dr. Fan Xiao
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 converter
  • distributed DC system
  • hybrid AC/DC distribution systems
  • double active bridge energy router
  • converter topology and control
  • fault detection, analysis, and ride-through
  • renewable energy integration
  • flexible AC/DC transmission and distribution
  • wide bandgap power device application

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Published Papers (1 paper)

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Research

19 pages, 4186 KiB  
Article
Comparison of Configurable Modular Two-Level and Three-Level Isolated Bidirectional DC–DC Converters for Super-Capacitor Charging in DC Shore Power Systems
by Wenqiang Xie, Mingming Shi, Yuying He, Chenyu Zhang and Ruihuang Liu
Energies 2024, 17(18), 4630; https://doi.org/10.3390/en17184630 - 15 Sep 2024
Viewed by 942
Abstract
Compared to the AC counterpart, the DC shore power system provides a significant advantage of efficient power supply from renewable sources to ships and onshore loads. Super-capacitors serve as key energy storage units in such a system to buffer the power fluctuations and [...] Read more.
Compared to the AC counterpart, the DC shore power system provides a significant advantage of efficient power supply from renewable sources to ships and onshore loads. Super-capacitors serve as key energy storage units in such a system to buffer the power fluctuations and collect the regenerative energy. However, the ultra-wide voltage range of super-capacitors imposes a significant challenge in the topology selection and efficiency optimization of the interfacing isolated bidirectional DC–DC converter. To tackle this challenge, this paper analyzes and compares two promising converter topologies, which are a configurable modular two-level dual-active bridge (CM-2L-DAB) and a three-level dual-active bridge (3L-DAB). To facilitate an ultra-wide voltage range, extended phase-shift (EPS) modulation in conjunction with the topology reconfiguration is analyzed for the CM-2L-DAB, while a hybrid modulation scheme is proposed for the 3L-DAB. A unified design approach is provided for both topologies, which also yields to the power loss modeling. On this basis, the CM-2L-DAB and 3L-DAB are thoroughly compared in terms of the modulation schemes, current stress, soft-switching operation, power conversion efficiency, material usage, closed-loop control scheme, and reliability. A prominent conclusion can be drawn that the CM-2L-DAB provides a higher efficiency than the 3L-DAB over the whole voltage range, but it relies on additional relays to reconfigure its topology which results in lower reliability and dynamic performance than the 3L-DAB. Full article
(This article belongs to the Special Issue Optimization of DC Power Converter and the Applications)
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