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

Deadline for manuscript submissions: closed (25 March 2026) | Viewed by 6398

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Special Issue Editors

Prof. Dr. Youpeng Huangfu

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Guest Editor

School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Interests: the characterization of instrument transformers; electromagnetic compatibility; arc fault detection for electrical systems

Dr. Jiawei Wang

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Guest Editor

School of Electrical Engineering, Xi'an Jiaotong University, No. 32 Xianning West Road, Xi'an 710049, China
Interests: numerical methods for electromagnetic/multiphysics simulations of electrical apparatus; EMC and EMI

Special Issue Information

Dear Colleagues,

We are thrilled to announce a forthcoming Special Issue dedicated to "Advancements in Electromagnetic Technology for Electrical Engineering". This issue aims to present the latest research in the field of electrical engineering where the generation, evaluation, exploitation and suppression of electromagnetic field play a crucial role. It invites contributions from all researchers, academics, and industry practitioners engaged in the area of electromagnetics. The purpose of this Special Issue is to present innovative theory, modelling, measurement, application, and manipulation of electromagnetic phenomena. Potential topics for submission include, but are not limited to:

Novel simulation methods for complex electromagnetic systems, especially AI enhanced methodologies;
Design, modelling, and optimization of electrical apparatus;
EMI and EMC techniques;
Electromagnetic-based measurement and instrumentation including sensors, actuators, medical instrumentation, fundamentals of measurement including measurement standards, uncertainty, dissemination and calibration;
Pulsed power applications;
Design, simulation, and optimization of electromagnetic launch systems.

Authors are encouraged to submit original research articles, review papers, or technical notes that present substantial contributions to the field. We seek submissions that demonstrate novel solutions, comprehensive validations, and practical implications, fostering insightful discussions and advances in the field of electrical engineering focused on the electromagnetic phenomena.

We eagerly anticipate your valuable contributions to this Special Issue, offering a platform for sharing knowledge, exchanging ideas, and advancing the frontiers of electromagnetisms in electrical engineering.

Prof. Dr. Youpeng Huangfu
Dr. Jiawei Wang
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

electromagnetic field
modelling and simulation
optimization
electromagnetic compatibility
sensors and actuators
pulsed power
electromagnetic launch

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Published Papers (5 papers)

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Research

22 pages, 2555 KB

Open AccessArticle

Effect of Gear Ratio on the Optimal Geometric Parameters in a Reluctance Magnetic Gear: A Multi-Objective Optimization Study

by Silvia Roscioli, Valentin Mateev, Amedeo Amoresano, Iosko Balabozov and Iliana Marinova

Energies 2026, 19(11), 2516; https://doi.org/10.3390/en19112516 - 23 May 2026

Abstract

Reluctance Magnetic Gears (RMGs) represent a cost-effective alternative to conventional magnetic gears, replacing the inner rotor permanent magnets with a toothed ferromagnetic rotor and adopting rectangular instead of arc-shaped magnets on the outer rotor. While these design choices reduce manufacturing complexity and material costs, they inherently introduce higher torque ripple, making simultaneous optimization of average torque and ripple a critical and non-trivial task. In this work, a multi-objective genetic algorithm is applied to four RMG configurations with integer gear ratios GR_int equal to 4, 5, 6, and 7, with a fixed inner rotor tooth number n₃ equal to 5. Seven design variables are optimized simultaneously: five radial thicknesses and two fill factors. The resulting Pareto fronts quantify the trade-off between average torque and ripple for each configuration. Analysis of the optimal solutions reveals a consistent geometric allocation pattern across all gear ratios, suggesting the existence of a common optimization criterion potentially generalizable to other RMG configurations. The influence of the gear ratio on both torque performance and optimal parameter distribution is discussed in detail. Full article

(This article belongs to the Special Issue Advancements in Electromagnetic Technology for Electrical Engineering)

23 pages, 3703 KB

Open AccessArticle

A Novel Fault Ranging Method for High-Voltage AC Transmission Lines Based on Attention-GRU and Modulus Amplitude Ratio

by Shihao Yin, Xiaodong Xing, Bin Zhang, Shixian Hui, Yunchuan Chen and Ning Tong

Energies 2026, 19(2), 494; https://doi.org/10.3390/en19020494 - 19 Jan 2026

Viewed by 303

Abstract

Existing high-voltage alternating current (AC) transmission line fault ranging methods have several drawbacks, including weak transition resistance, a complicated feature extraction process, and difficult calibration of the travelling wave head. To address these issues, a single-end fault ranging method for high-voltage AC transmission lines based on Attention-GRU and modulus amplitude ratio is proposed. Firstly, based on the travelling wave dispersion characteristics, an approximate formula is derived between the fault distance of the high-voltage AC transmission line and the amplitude ratio of the sum of the initial transient voltage travelling wave modes 1 and 2 and the mode 0 components at the ranging location. This shows that a definite nonlinear mapping relationship exists between the two. Secondly, the Attention-GRU is constructed using the multiscale wavelet modal maxima ratio between the sum of the initial transient voltage travelling wave mode 1 and 2 components and the mode 0 component as the input eigenquantities and the fault distance as the output quantity. The fault distance is then calculated using the Attention-GRU and the modal amplitude ratio. The Attention-GRU neural network fault ranging model is then constructed using the distance as the output quantity. After training is completed, the fault feature quantities obtained from the measurement points are inputted into the Attention-GRU model to achieve the purpose of fault ranging. The ranging ability of this model is then compared with that of other neural network models. A large number of simulations verify that the proposed method has high ranging accuracy and that the ranging capability is not affected by the fault type, transition resistance or the initial phase angle of the fault. Full article

(This article belongs to the Special Issue Advancements in Electromagnetic Technology for Electrical Engineering)

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18 pages, 5317 KB

Open AccessArticle

Development and Optimization of a 10-Stage Solid-State Linear Transformer Driver

by Keegan Kelp, Dawson Wright, Kirk Schriner, Jacob Stephens, James Dickens, John Mankowski, Zach Shaw and Andreas Neuber

Energies 2025, 18(19), 5129; https://doi.org/10.3390/en18195129 - 26 Sep 2025

Viewed by 1344

Abstract

This work details the development of a 10-stage solid-stage linear transformer driver (SSLTD) capable of producing 24 kV, 1 kA pulses with a rise-time of ∼10 ns utilizing SiC MOSFET switches. Throughout the development process, various design parameters were investigated for their influence on the LTD’s performance. Among these considerations was an evaluation of the behavior of several nanocrystalline magnetic core materials subject to high-voltage pulsed conditions, with an emphasis on minimizing energy losses. Another design parameter of interest lies in the physical layout of the LTD structure, particularly the diameter of the central stalk and the dielectric material, which together define the characteristics of the coaxial transmission line, as well as the overall height of each stage. The influence of each of these parameters was weighed to optimize the final design for fastest output pulse rise-time, highest efficiency, and cleanest output pulse waveform profile across varying load resistance. This work also introduces a pulsed reset technique, where repetition-rated burst testing was used to find the maximum operational frequency of the LTD without driving the magnetic cores into saturation. Full article

(This article belongs to the Special Issue Advancements in Electromagnetic Technology for Electrical Engineering)

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23 pages, 16399 KB

Open AccessArticle

Design and Implementation of a Full SiC-Based Phase-Shifted Full-Bridge DC-DC Converter with Nanocrystalline-Cored Magnetics for Railway Battery Charging Applications

by Fatih Enes Gocen, Salih Baris Ozturk, Mehmet Hakan Aksit, Gurkan Dugan, Benay Cakmak and Caner Demir

Energies 2025, 18(15), 3945; https://doi.org/10.3390/en18153945 - 24 Jul 2025

Cited by 4 | Viewed by 2680

Abstract

This paper presents the design and implementation of a high-efficiency, full silicon carbide (SiC)-based center-tapped phase-shifted full-bridge (PSFB) converter for NiCd battery charging applications in railway systems. The converter utilizes SiC MOSFET modules on the primary side and SiC diodes on the secondary side, resulting in significant efficiency improvements due to the superior switching characteristics and high-temperature tolerance inherent in SiC devices. A nanocrystalline-cored center-tapped transformer is optimized to minimize voltage stress on the rectifier diodes. Additionally, the use of a nanocrystalline core provides high saturation flux density, low core loss, and excellent permeability, particularly at high frequencies, which significantly enhances system efficiency. The converter also compensates for temperature fluctuations during operation, enabling a wide and adjustable output voltage range according to the temperature differences. A prototype of the 10-kW, 50-kHz PSFB converter, operating with an input voltage range of 700–750 V and output voltage of 77–138 V, was developed and tested both through simulations and experimentally. The converter achieved a maximum efficiency of 97% and demonstrated a high power density of 2.23 kW/L, thereby validating the effectiveness of the proposed design for railway battery charging applications. Full article

(This article belongs to the Special Issue Advancements in Electromagnetic Technology for Electrical Engineering)

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16 pages, 3453 KB

Open AccessArticle

Optimization and Analysis of Sensitive Areas for Look-Ahead Electromagnetic Logging-While-Drilling Based on Geometric Factors

by Guoyu Li, Zhenguan Wu, Xiaoqiao Liao, Xizhou Yue, Xiang Zhang, Tianlin Liu and Yunxin Zeng

Energies 2025, 18(12), 3014; https://doi.org/10.3390/en18123014 - 6 Jun 2025

Cited by 1 | Viewed by 1271

Abstract

Look-ahead electromagnetic (EM) logging-while-drilling (LWD) plays an indispensable role in the prediction of deep and ultra-deep reservoirs. Traditional electromagnetic logging-while-drilling (EMLWD) and ultra-deep EMLWD technologies exhibit certain limitations in the real-time detection of ahead-of-bit formations, making it challenging to meet precision drilling requirements under complex well conditions, with the development of petroleum and gas geology and exploration progress I n the direction of deep, ultra-deep, and complex reservoirs. As a new LWD technology, look-ahead EMLWD enables real-time identification of formation structures, fluid distributions, and interface positions ahead of the drill bit during the drilling process by leveraging the propagation characteristics of EM. This capability provides critical decision-making support for wellbore trajectory optimization, drilling risk assessment, and reservoir evaluation. Therefore, this paper conducts research on theoretical methodologies for look-ahead EMLWD. Leveraging the Born geometric factor theory, we derive the expression for the 3D geometric factor spatial signal and analyze the sensitivity of each component related to look-ahead. Building on this foundation, we establish the sensitivity expression for look-ahead operations and investigate the impact of various antenna configurations on its signal. The results indicate that the coaxial component (gzz) and coplanar components (gxx and gyy) are the primary contributors to look-ahead EMLWD. As frequency decreases and spacing increases, the sensitive region for look-ahead expands. Moreover, look-ahead detection sensitivity becomes increasingly concentrated in front of the drill bit, while the signal at the opposite end is attenuated by incorporating additional coils. Under identical formation conditions, compared with a single-transmitter single-receiver system, a single-transmitter double-receiver coil system exhibits a significantly stronger signal amplitude and more pronounced changes at the formation boundary. Additionally, this configuration enhances sensitivity and extends the sensitive distance in response to variations in formation resistivity. Full article

(This article belongs to the Special Issue Advancements in Electromagnetic Technology for Electrical Engineering)

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