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Power Electronics in Renewable, Storage and Charging Systems

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

Deadline for manuscript submissions: 15 July 2026 | Viewed by 2426

Special Issue Editors

Prof. Dr. Gianluca Gatto

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Guest Editor
Department of Electrical and Electronic Engineering, University of Cagliari, Via Marengo 2, Cagliari, Italy
Interests: power electronics; electrical drives; electromagnetic compatibility (EMC)
Special Issues, Collections and Topics in MDPI journals
Dr. Amit Kumar

E-Mail Website
Guest Editor
Department of Electrical and Electronic Engineering, University of Cagliari, Via Marengo 2, Cagliari, Italy
Interests: power electronics; renewable energy; wide bandgap devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wide-bandgap (WBG) semiconductors like silicon carbide (SiC) and gallium nitride (GaN) have transformed power electronics by facilitating better efficiency, faster switching speeds, and increased power density, which are essential for modern energy systems. To achieve the full potential of WBG devices, advanced passive components, particularly inductors, must be developed as they are crucial in power conversion systems. Conventional inductor designs are optimized for silicon (Si)-based devices and often fail when used with WBG semiconductors due to challenges such as high-frequency losses, thermal management issues, and size constraints.

This Special Issue will focus on recent advancements in inductor design for WBG devices, emphasizing the key challenges and opportunities in this field. It will highlight the integration of inductors with WBG-based power converters for various applications, including electric vehicles (EVs), renewable energy systems, switching-mode power supplies (SMPSs) for medical devices, and energy storage. By bridging the gap between WBG semiconductor technology and passive component design, this Special Issue aims to promote the development of more compact, efficient, and reliable power electronics systems.

Prof. Dr. Gianluca Gatto
Dr. Amit Kumar
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 250 words) can be sent to the Editorial Office for assessment.

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

  • wide bandgap
  • inductors
  • power electronics
  • renewable energy systems
  • energy storage

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Published Papers (3 papers)

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Research

28 pages, 1533 KB  
Article
Benchmarking 0D, 1D, and 2D Analytical Thermal Models for Cylindrical Inductors in Power Electronic Systems
by Francesco Montana and Daniele Scirè
Energies 2026, 19(9), 2033; https://doi.org/10.3390/en19092033 - 23 Apr 2026
Viewed by 212
Abstract
Inductors are critical components in power electronic systems, yet their thermal behavior is often approximated using simplified lumped models that neglect internal gradients and transient spatial effects. This paper presents a benchmarking study of analytical thermal modeling approaches for cylindrical inductors, including 0D [...] Read more.
Inductors are critical components in power electronic systems, yet their thermal behavior is often approximated using simplified lumped models that neglect internal gradients and transient spatial effects. This paper presents a benchmarking study of analytical thermal modeling approaches for cylindrical inductors, including 0D lumped, 1D radial, and 2D radial–axial transient formulations. Starting from the general heat conduction equation in cylindrical coordinates, closed-form or semi-analytical solutions are discussed under uniform internal heat generation and convective boundary conditions. The proposed framework provides a benchmark-oriented analytical reference for selecting the appropriate thermal model complexity in reliability-oriented design of inductive components in power electronic systems. The models are applied to a representative two-layer cylindrical inductor composed of a ferrite core and a copper winding, under identical loss and cooling assumptions, considering two axial lengths in order to assess geometric influence. Steady-state temperature levels, transient responses, modal time constants, and axial gradient indicators are extracted to quantify the differences among modeling levels. The results show that the dominant thermal behavior is governed by a single slow mode with a time constant on the order of one hour. The spatially averaged temperature predicted by the 0D model deviates by less than 2.5% from the 2D solution in steady-state conditions, with the 1D model providing accurate predictions when axial gradients remain weak. Full article
(This article belongs to the Special Issue Power Electronics in Renewable, Storage and Charging Systems)
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17 pages, 2676 KB  
Article
Energy Storage Configuration in Fuel Cell Electric Vehicle: An Analysis on a Real Urban Mission Profile
by Simone Cosso, Alessandro Benevieri, Massimiliano Passalacqua, Andrea Formentini, Luis Vaccaro, Simon Kissling, Mauro Carpita and Mario Marchesoni
Energies 2025, 18(23), 6136; https://doi.org/10.3390/en18236136 - 23 Nov 2025
Cited by 1 | Viewed by 685
Abstract
Fuel cell electric vehicles (FCEVs) rely on a battery system to manage transient load demands and to recover braking energy. In recent years, hybrid topologies that also integrate supercapacitors have gained considerable attention, since they can improve system efficiency, driving dynamics, and component [...] Read more.
Fuel cell electric vehicles (FCEVs) rely on a battery system to manage transient load demands and to recover braking energy. In recent years, hybrid topologies that also integrate supercapacitors have gained considerable attention, since they can improve system efficiency, driving dynamics, and component lifetime. Supercapacitors, thanks to their much higher power density compared to conventional batteries, are particularly promising for adoption in FCEVs. Most studies in the literature, however, evaluate these architectures under standardized homologation driving cycles. While such cycles provide a common benchmark for comparison, they generally exhibit less energy-intensive profiles and therefore do not fully capture the real operating demands of a vehicle. For this reason, the present work investigates the use of batteries and supercapacitors in FCEVs under an actual urban driving mission, where the route includes an experimentally measured altitude profile. This approach allows for a more realistic assessment of energy requirements. Furthermore, the analysis carried out in this study considers different powertrain configurations: the exclusive use of a battery, the sole use of a supercapacitor, and a hybrid combination of both systems. These scenarios are evaluated both for an FCEV that can only be refueled with hydrogen and for a plug-in hybrid version of the vehicle that can also recharge its battery from an external charging station. Full article
(This article belongs to the Special Issue Power Electronics in Renewable, Storage and Charging Systems)
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27 pages, 2132 KB  
Article
Protection Principle of DC Line Based on Fault Component of Line Mode Voltage with Current-Limiting Reactor
by Weiming Zhang, Tiecheng Li, Xianzhi Wang, Qingquan Liu, Shiyan Liu, Mingyu Luo and Zhihui Dai
Energies 2025, 18(16), 4271; https://doi.org/10.3390/en18164271 - 11 Aug 2025
Cited by 2 | Viewed by 1021
Abstract
High-resistance faults on the DC lines of multi-terminal VSC-HVDC grids lead to insufficient protection reliability, and the introduction of current-limiting strategies alters the system’s intrinsic fault characteristics, degrading protection performance. To address these issues, we propose a DC-line protection scheme that is immune [...] Read more.
High-resistance faults on the DC lines of multi-terminal VSC-HVDC grids lead to insufficient protection reliability, and the introduction of current-limiting strategies alters the system’s intrinsic fault characteristics, degrading protection performance. To address these issues, we propose a DC-line protection scheme that is immune to converter control strategies and highly tolerant to fault resistance. First, based on the grid topology, post-fault current paths are analyzed, and the fault characteristics produced solely by the fault-induced voltage source are identified. A sequential overlapping derivative transformation is then employed to magnify the discrepancy between internal and external faults, forming the core of the fault-identification criterion; the zero-mode component is used for pole selection. Finally, a four-terminal VSC-HVDC model is built in PSCAD/EMTDC version 4.6.2 for validation. Simulation results show that, after applying the current-limiting strategy, the characteristic quantity changes only marginally, and the proposed protection can reliably withstand fault resistances of up to 700 Ω. Full article
(This article belongs to the Special Issue Power Electronics in Renewable, Storage and Charging Systems)
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