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Advances in Energy Efficiency for Wireless Power Transfer Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 444

Editors


E-Mail Website1 Website2
Guest Editor
Department of Electrical Engineering, University of Málaga, 29016 Málaga, Spain
Interests: electric vehicle; wireless power transfer; power system
Special Issues, Collections and Topics in MDPI journals

E-Mail Website1 Website2
Guest Editor
Department of Electrical Engineering, University of Málaga, 29016 Málaga, Spain
Interests: electric vehicle; wireless power transfer; power system

Special Issue Information

Dear Colleagues,

Wireless power transfer (WPT) refers to the technologies that enable powering a device without the need for being connected through a cable to the grid. Currently, this kind of system is foreseen for high-power applications (ultra-fast EV charging, trains, electric buses, industrial automated guided vehicles, etc.), where efficiency is a strong requirement. The efficiency is usually defined as how much active power is consumed by the device’s battery when compared to the power generated by the grid-connected source. Efficiency can also be extended to the use of renewable energy sources in a WPT system connected to PV or wind installations.

This Special Issue focuses on the design, test, and evaluation of inductive/resonant WPT systems with high-efficiency power transfer. Thus, papers showing the challenges of designing high-efficient wireless power transfer systems in a specific application are welcome. Topics of interest include, but are not limited to, the following:

  • Efficiency analysis in proof-of-concepts.
  • Novel coil geometries and materials for power transfer optimization.
  • Compensation systems to cope with misalignment.
  • Control strategies in WPT systems integrated with renewable energy sources.
  • Complementary techniques to ensure high-efficient power transfer with unexpected events: foreign object detection, communication control, electromagnetic interference analysis, safety and protection mechanisms.
  • Thermal analysis and management.
  • Adaption of wireless power transfer systems for underwater applications.
  • Experimental validation and scalability of WPT systems.
  • Standardization, interoperability and regulatory aspects.

Prof. Dr. Alicia Triviño-Cabrera
Dr. Inmaculada Casaucao Tenllado
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-anonymized 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

  • wireless charging
  • EV
  • high-power charging
  • coils
  • control techniques
  • efficiency

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Published Papers (1 paper)

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Research

17 pages, 4354 KB  
Article
LCC-S vs. LCC-LCC: Efficient Wireless Charging for Underwater Drones Under Seawater Conditions
by Inmaculada Casaucao and Alicia Triviño
Energies 2026, 19(15), 3691; https://doi.org/10.3390/en19153691 - 5 Aug 2026
Viewed by 118
Abstract
Battery autonomy is one of the main factors limiting the endurance of autonomous underwater vehicles (AUVs). Conventional charging through electrical connectors is inconvenient in marine environments since connectors are exposed to corrosion and usually require manual intervention or docking procedures. Inductive wireless power [...] Read more.
Battery autonomy is one of the main factors limiting the endurance of autonomous underwater vehicles (AUVs). Conventional charging through electrical connectors is inconvenient in marine environments since connectors are exposed to corrosion and usually require manual intervention or docking procedures. Inductive wireless power transfer (WPT) avoids these drawbacks, although the conductive nature of seawater introduces additional effects, such as eddy current losses and parasitic capacitance between the coils. These effects modify the resonance conditions of the compensation network and, in turn, reduce the transfer efficiency. This paper presents the design and experimental assessment of an inductive charger for a commercial and specific underwater drone operating under seawater conditions. A square coil geometry, selected to match the available installation area on the vehicle, was analysed together with two compensation networks (LCC-S and LCC-LCC) and two coil designs with 20 and 25 turns. Based on an analytical characterisation, their performance was evaluated for different coil separations and operating temperatures. Among the analysed configurations, the LCC-S topology with 25 turns provided the best compromise between efficiency and tolerance to gap variations. A laboratory prototype was subsequently built and tested in saline water with NaCl concentrations of 2%, 3%, and 4%, reaching an efficiency close to 87% at 266 W. These results confirm that the proposed design is suitable for underwater wireless charging under representative marine salinity conditions. Full article
(This article belongs to the Special Issue Advances in Energy Efficiency for Wireless Power Transfer Systems)
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