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Energies
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Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications—2nd Edition
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Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications—2nd Edition

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

Deadline for manuscript submissions: 20 February 2025 | Viewed by 4707

Special Issue Editors

Dr. Ioana-Gabriela Sirbu

E-Mail Website
Guest Editor
Faculty of Electrical Engineering, University of Craiova, 200440 Craiova, Romania
Interests: analysis of electrical circuits in dynamic regimes; analysis of nonlinear electric circuits; equivalent circuits; power quality analysis; electric transportation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Lucian Mandache

E-Mail Website
Guest Editor
Faculty of Electrical Engineering, University of Craiova, 200440 Craiova, Romania
Interests: symbolic–numerical analysis of analog circuits; numerical analysis of switching regimes; tolerance and sensitivity analysis; estimation of parameters in electrical systems; power quality; CAD/CAE tools for electrical engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electric circuit theory provides essential notions for electrical engineering. By knowing and understanding the basic theory of electrical phenomena, the operation of the components, the theorems connecting the electrical quantities and the particular phenomena that occur in different regimes, the operation of electrical and electronic devices, automation systems, and power supply networks can be better understood. Therefore, electrical circuits, whether linear or nonlinear, with lumped or distributed parameters, are found in many engineering subdomains: electrical and electronic engineering (principally), power engineering, transportation engineering, telecommunications, automation and hardware systems, etc. On the other hand, the relations between electrical quantities, transposed into systems of algebraic or differential equations, cannot be solved correctly without the involvement of specialists in mathematics. So the issues of electrical circuits can be divided into two main directions, each with different topics of interest, including, but not limited to, the following:

+ Theoretical aspects regarding linear and nonlinear electrical circuits:

  • Parameter estimation;
  • Passive and active components;
  • New theoretical approaches;
  • Numerical, symbolic and partial symbolic methods;
  • Stability criteria;
  • Circuit synthesis;
  • Simulation.

+Applications of electrical circuits:

  • Electrical and electronic devices;
  • Electromechanical systems;
  • Electromagnetic devices;
  • Electric transportation;
  • On-board electrical systems;
  • Static converters;
  • Power and energy systems;
  • Biomedical circuits and systems;
  • Communications.

You are invited to submit papers related to the above topics, for inclusion in this Special Issue of the journal Energies, a Web of Science-indexed, peer-reviewed, open access journal with an impact factor of 3.252 (2021).

Dr. Ioana-Gabriela Sirbu
Prof. Dr. Lucian Mandache
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

  • linear circuit
  • nonlinear circuit
  • solving methods
  • software tools for circuit simulation
  • computer-aided design
  • equivalent circuits
  • mathematical techniques
  • numerical techniques
  • electronics
  • converters
  • sensors
  • filter design
  • electrical and electronic devices
  • power networks

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Published Papers (4 papers)

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Research

20 pages, 4628 KiB  
Article
Measurement and Modeling of Self-Directed Channel (SDC) Memristors: An Extensive Study
by Karol Bednarz and Bartłomiej Garda
Energies 2024, 17(21), 5400; https://doi.org/10.3390/en17215400 - 30 Oct 2024
Viewed by 457
Abstract
This study systematically addresses the challenge of accurately modeling memristors, focusing on four distinct types doped with tungsten, tin, chromium, and carbon, fabricated by Knowm Inc. A comprehensive characterization is performed by subjecting the devices to sinusoidal excitations with varying frequencies and amplitudes, [...] Read more.
This study systematically addresses the challenge of accurately modeling memristors, focusing on four distinct types doped with tungsten, tin, chromium, and carbon, fabricated by Knowm Inc. A comprehensive characterization is performed by subjecting the devices to sinusoidal excitations with varying frequencies and amplitudes, followed by data averaging and high-frequency filtering. The resulting measurements are fitted using three prominent memristor models: VTEAM, MMS, and Yakopcic. Additional bespoke modifications are assessed. These models, typically formulated as coupled algebraic differential equations integrating electrical quantities (voltage and current) with internal state variables governing device dynamics, are optimized using two robust approaches: (1) interior-point optimization with gradient-based search, and (2) Nelder–Mead gradient-free optimization, both with box constraints applied. A thorough comparison and discussion of the optimized model parameters ensue, accompanied by an examination of the sensitivity to diverse frequency and amplitude ranges. The findings inform conclusions and provide a foundation for future refinements, underscoring the importance of multi-model evaluation and advanced optimization strategies in precise memristor modeling. The presented methodology offers a valuable framework for elucidating optimal modeling paradigms tailored to specific memristor architectures and operating regimes, ultimately enhancing their integration in emerging neuromorphic and computational applications. Full article
(This article belongs to the Special Issue Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications—2nd Edition)
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18 pages, 5572 KiB  
Article
The Effect of Magnetic Anisotropy on the Computed Specific Total Loss in Electrical Steel
by Wojciech A. Pluta
Energies 2024, 17(5), 1112; https://doi.org/10.3390/en17051112 - 26 Feb 2024
Cited by 1 | Viewed by 710
Abstract
Grain-oriented (GO) electrical steel (ES) laminates are still very important in industrial applications due to their remarkable crystallographic properties. Cores of large electrical machines and transformers are built from ES. The performances of these devices are significantly influenced by the properties of ES. [...] Read more.
Grain-oriented (GO) electrical steel (ES) laminates are still very important in industrial applications due to their remarkable crystallographic properties. Cores of large electrical machines and transformers are built from ES. The performances of these devices are significantly influenced by the properties of ES. The improvement of ES properties has been the subject of considerable research for many years. The phenomenon of magnetic anisotropy is highly non-linear, and it should be taken into account by the designers of magnetic circuits. The article proposes a modified model for calculating the angular properties of specific total loss of ES. The modeling takes into account the isotropic component (from classic eddy currents) and the anisotropic component, which is the sum of hysteresis and excess losses. For the directional loss modeling, the Boltzmann function was used. An analysis of the dependency of model coefficients on the frequency is presented. Full article
(This article belongs to the Special Issue Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications—2nd Edition)
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17 pages, 2482 KiB  
Article
Comprehensive Study of SDC Memristors for Resistive RAM Applications
by Bartłomiej Garda and Karol Bednarz
Energies 2024, 17(2), 467; https://doi.org/10.3390/en17020467 - 18 Jan 2024
Cited by 2 | Viewed by 1342
Abstract
Memristors have garnered considerable attention within the scientific community as devices for emerging construction of Very Large Scale Integration (VLSI) systems. Owing to their inherent properties, they appear to be promising candidates for pivotal components in computational architectures, offering alternatives to the conventional [...] Read more.
Memristors have garnered considerable attention within the scientific community as devices for emerging construction of Very Large Scale Integration (VLSI) systems. Owing to their inherent properties, they appear to be promising candidates for pivotal components in computational architectures, offering alternatives to the conventional von Neumann architectures. This work has focused on exploring potential applications of Self-Directed Channel (SDC) memristors as novel RRAM memory cells. The introductory section of the study is dedicated to evaluating the repeatability of the tested memristors. Subsequently, a detailed account of the binary programming testing process for memristors is provided, along with illustrative characteristics depicting the impact of programming pulses on a memory cell constructed from a memristor. A comprehensive data analysis was then conducted, comparing memristors with varying types of doping. The results revealed that SDC memristors exhibit a high level of switching, certainty between the Low Resistance State (LRS) and High Resistance State (HRS), suggesting their capability to facilitate the storage of multiple bits within a single memory cell. Full article
(This article belongs to the Special Issue Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications—2nd Edition)
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20 pages, 7588 KiB  
Article
Influence of the Skin and Proximity Effects on the Thermal Field in a System of Two Parallel Round Conductors
by Marek Zaręba, Tomasz Szczegielniak and Paweł Jabłoński
Energies 2023, 16(17), 6341; https://doi.org/10.3390/en16176341 - 1 Sep 2023
Cited by 4 | Viewed by 1472
Abstract
This paper presents a semi-analytical method for determining the distribution of the thermal field in a system of two parallel round conductors, taking into account the skin and proximity effects. The method of a suitably constructed Green’s function was applied to find an [...] Read more.
This paper presents a semi-analytical method for determining the distribution of the thermal field in a system of two parallel round conductors, taking into account the skin and proximity effects. The method of a suitably constructed Green’s function was applied to find an analytical expression for the eigenfunctions describing the temperature distributions. In turn, the relevant integrals, which cannot be determined analytically, were calculated numerically. The foundation of the method is the knowledge of the current density distribution in the conductors. As a result, the steady-state distribution of the temperature field in the conductors for various parameter values can be determined. The obtained numerical results were positively verified using the finite element method. Using the developed method, the share of skin and proximity effects in the temperature rise and steady-state current rating was evaluated. Closed analytical formulas were obtained for the AC case with the skin effect taken into account. When the skin depth is smaller than the wire radius, the skin effect has quite a large impact on the conductor temperature. The impact of the proximity effect is much smaller but clearly noticeable when the distance between the wires is smaller than five times the wire radius. In addition, the influence of the value of the heat transfer coefficient on the thermal field of the conductors was also examined. Full article
(This article belongs to the Special Issue Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications—2nd Edition)
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