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New Topologies, Design, Modeling and Control of DC-DC Converters in...
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New Topologies, Design, Modeling and Control of DC-DC Converters in Power Systems

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

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 4550
The paper submitted to the Special Issue will be processed and published immediately if it's accepted after peer-review.
Please contact the guest editor or the journal editor ([email protected]) for any queries.

Special Issue Editor

Prof. Dr. Antonio Lazaro

E-Mail Website
Guest Editor
Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Interests: design and optimization of medium and high power dc-dc converters; power factor correction rectifiers; inverters (railway and grid-tied applications); advanced modulation techniques, modeling and digital control of switching converters

Special Issue Information

Dear Colleagues,

DC-DC converters play a very important role as an enabling technology in the latest trends in novel power systems. Virtual Power Plants, massive energy storage in batteries, energy recuperators connected to railway catenaries, solid state transformers, the vehicle to grid initiative, etc. include DC-DC converters as one of their essential elements. These converters, necessarily bi-directional, face several challenges from the power stage point of view:

  • High power (tens to hundreds of kilowatts up to 1–2 megawatts)
  • High voltage (1500V renewable energy standards and 3000V on railway applications)
  • Medium switching frequencies (5–10 kHz)

On the other hand, new challenges are also arising in modulation and control:

  • Extending the range of soft switching and reducing rms currents require optimizing and reconfiguring the modulator in real time
  • The dynamic interaction of the converter with the system in which it is integrated requires advances in modelling strategies and control techniques

This Special Issue focuses on new topologies of DC-DC converters to be integrated in new electrical networks, their design, modelling and control. Original papers will be accepted in all areas related to the above aspects. Topics of interest for publication include, but are not limited to, the following:

  • Innovative power topologies
  • Design and multi-objective optimization techniques of transformers and inductances specific to these converters
  • Multi-objective converter design and optimization techniques including the cooling system
  • Modelling of parasitic lay-out elements and new active snubbers
  • Real-time optimization and reconfiguration techniques for PWM modulators
  • Modelling strategies and identification of system uncertainties
  • Control techniques oriented to the stabilization of a system with multiple converters and multiple power flows

Prof. Dr. Antonio Lazaro
Guest Editor

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

  • Power electronics
  • DC-DC converters
  • Virtual power plants
  • Energy Storage System
  • Multi-objective optimization techniques
  • Control methods
  • Multi-converter system
  • Multiple power flows

Published Papers (2 papers)

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Research

18 pages, 1651 KiB  
Article
Parasitic Capacitance Effects on Active Clamp Flyback Output Characteristics: Application to IPOP Connection
by Jacinto M. Jiménez-Martínez, Esther de Jódar and José Villarejo
Energies 2022, 15(9), 3201; https://0-doi-org.brum.beds.ac.uk/10.3390/en15093201 - 27 Apr 2022
Cited by 1 | Viewed by 1232
Abstract
Different mechanisms for balancing power between parallel connected modules have been presented in recent years. They have been broadly classified into active and passive methods. The high output impedance of topologies, including active clamp networks, suggests that they can achieve output current sharing [...] Read more.
Different mechanisms for balancing power between parallel connected modules have been presented in recent years. They have been broadly classified into active and passive methods. The high output impedance of topologies, including active clamp networks, suggests that they can achieve output current sharing passively when they are connected in parallel. However, some parasitic elements, such as stray capacitances and leakage inductances, have not been considered in the theoretical analyses. Moreover, these need to be taken into account when a high step-up ratio is required because they modify the behavior and output impedance of a module, which changes the current balance. This paper presents a detailed analysis of the influence of parasitic capacitances on active clamp flyback converters that were parallel connected, using the output impedance as a current self-balance method. The proposed solution to alleviate the negative effects on current balance was also studied and validated as a successful method that did not increase the complexity of the controller. Finally, the results that were obtained using an experimental prototype with two 100W modules helped to verify the theoretical results. Full article
(This article belongs to the Special Issue New Topologies, Design, Modeling and Control of DC-DC Converters in Power Systems)
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23 pages, 8534 KiB  
Article
Small-Signal Modeling of Phase-Shifted Full-Bridge Converter Considering the Delay Associated to the Leakage Inductance
by Diego Ochoa, Antonio Lázaro, Pablo Zumel, Marina Sanz, Jorge Rodriguez de Frutos and Andrés Barrado
Energies 2021, 14(21), 7280; https://0-doi-org.brum.beds.ac.uk/10.3390/en14217280 - 03 Nov 2021
Cited by 4 | Viewed by 2663
Abstract
This paper demonstrates that in the Phase-Shifted Full-Bridge (PSFB) buck-derived converter, there is a random delay associated with the blanking time produced by the leakage inductance. This random delay predicts the additional phase drop that is present in the frequency response of the [...] Read more.
This paper demonstrates that in the Phase-Shifted Full-Bridge (PSFB) buck-derived converter, there is a random delay associated with the blanking time produced by the leakage inductance. This random delay predicts the additional phase drop that is present in the frequency response of the open-loop audio-susceptibility transfer function when the converter shows a significant blanking time. The existing models of the PSFB converter do not contemplate the delay and gain differences associated to voltage drop produced in the leakage inductor of the transformer. The small-signal model proposed in this paper is based on the combination of two types of analysis: the first analysis consists of obtaining a small-signal model using the average modeling technique and the second analysis consists of studying the natural response of the power converter. The dynamic modeling of the Phase-Shifted Full-Bridge converter, including the random delay, has been validated by simulations and experimental test. Full article
(This article belongs to the Special Issue New Topologies, Design, Modeling and Control of DC-DC Converters in Power Systems)
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