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Energies
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Modeling and Optimal Design of Electromagnetic Devices
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Modeling and Optimal Design of Electromagnetic Devices

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

Deadline for manuscript submissions: closed (25 February 2022) | Viewed by 9087

Special Issue Editor

Prof. Dr. Jordi-Roger Riba

E-Mail Website
Guest Editor
Department of Electrical Engineering, Universitat Politècnica de Catalunya, 08222 Terrassa, Spain
Interests: simulation; modeling; electrical machines; actuators; connectors; data processing; customized design; optimization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are inviting submissions to a Special Issue of Energies on the subject area of "Electromagnetic Devices Modeling", and related topics. Electromagnetic devices are widely applied in many sectors, including general industry, medical facilities, electrical substations, automotive, railway, aeronautics, aerospace or military  among others. Emerging areas such as the Internet of Things require distributed sensor systems and energy harvesters, which include different types of electromagnetic devices. Electromagnetic devices are also critical components in different renewable energy applications such as wind, wave and tidal energy harvesting. Electromagnetic devices also play a leading role in road, maritime and air electric transportation and mobility systems. Many of these applications require specific designs, advanced materials or the use of accurate modelling tools in order to fulfil strict requirements such as enhanced energy efficiency, extended useful life, high reliability, compatibility with fault diagnosis approaches or the possibility of fault tolerant operation among others. There is growing interest in designing and testing digitally some of these devices before they are physically produced, so digital twins will play a key role in these developments. From this perspective the technologies currently associated with modelling, simulation and optimal design  are receiving much interest. On the other hand, although substantial advances have been done in recent years in this field, there are still significant challenges to de addressed related to the implementation of fast and cost-effective modelling and optimal design tools. From this perspective, this Special Issue seeks to contribute in these areas through state-of-the-art scientific and multi-disciplinary works, aiming to improve knowledge and performance in the areas of modelling and optimal design of electromagnetic devices. We strongly encourage papers providing innovative technical developments, reviews, case studies, and analytics, as well as assessments and manuscripts targeting different disciplines, which are relevant to modelling and optimal design of electromagnetic devices and to the associated advances and challenges.

  • Advanced modeling tools
  • Optimal design tools
  • Optimization methods applied to design electromagnetic devices
  • Ultra-fast finite element methods applied to electromagnetic devices
  • Computational electromagnetics applied to electromagnetic devices
  • Electromagnetic devices for electric transportation systems
  • Electromagnetic devices for aerospace applications
  • Electromagnetic devices for renewable energy systems
  • Modeling and optimal design of electrical machines
  • Modeling and optimal design of harvesters for wind, wave and tidal energy
  • Digital twins applied to electrical traction systems and energy harvesters
  • Modeling and design of electromagnetic devices for high-voltage applications
  • Design and modeling of fault tolerant electromagnetic devices
  • Design and modeling of electromagnetic devices for IoT applications
  • Design and modeling of electromagnetic devices for electromobility applications

Prof. Dr. Jordi-Roger Riba
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

  • Modeling
  • Optimal design
  • Optimization
  • Simulations
  • Finite element methods
  • Computational electromagnetics
  • Digital twins
  • Electrical machines
  • Electromagnetic actuators
  • Energy harvesters
  • High-voltage systems
  • Data processing
  • Electromobility
  • Aircraft applications
  • Renewable energy

Published Papers (4 papers)

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Research

21 pages, 5024 KiB  
Article
Design Optimization of a Direct-Drive Electrically Excited Synchronous Generator for Tidal Wave Energy
by Serigne Ousmane Samb, Nicolas Bernard, Mohamed Fouad Benkhoris and Huu Kien Bui
Energies 2022, 15(9), 3174; https://doi.org/10.3390/en15093174 - 26 Apr 2022
Cited by 5 | Viewed by 1592
Abstract
In the field of marine renewable energies, the extraction of marine currents by the use of tidal current turbines has led to many studies. In contrast to offshore wind turbines, the mass minimization is not necessarily the most important criterion. In that case, [...] Read more.
In the field of marine renewable energies, the extraction of marine currents by the use of tidal current turbines has led to many studies. In contrast to offshore wind turbines, the mass minimization is not necessarily the most important criterion. In that case, Direct-Drive Electrically Excited Synchronous Generators (EESG) can be an interesting solution in a context where the permanent magnet market is more and more stressed. In the particular case of a tidal turbine, the electric generator operates at variable torque and speed all the time. Its sizing must therefore take into account the control strategy and check that all the constraints are respected during the working cycle, particularly the thermal one because its permanent regime is never reached. There is no solution today that can completely solve such a sizing problem. The paper presents a specific solution. In particular, we will see that the method presented allows an avoidance of an oversizing of the generator compared to conventional methods while finding the optimal control strategy. Thus, the design optimization of an EESG is conducted considering the variable torque and speed profiles related to marine currents. The analytical model used in the paper is presented at first. In a second step, the innovative and original method that allows solving at the same time the design optimization and the control strategy (dq stator currents and rotor current) are presented. It shows how it is possible to minimize both the lost energy during the working cycle and the mass while fulfilling all the constraints (especially the thermal constraint with its transient temperature response) and keeping a reduced computation time. The case of a 2 MW tidal wave turbine is chosen to illustrate this study. Finally, the optimal design selected is validated by a 2D magnetic Finite Element Analysis (FEA). Full article
(This article belongs to the Special Issue Modeling and Optimal Design of Electromagnetic Devices)
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21 pages, 7538 KiB  
Article
Modeling the Effect of Compressive Stress on Hysteresis Loop of Grain-Oriented Electrical Steel
by Mateus Botani de Souza Dias, Fernando José Gomes Landgraf and Krzysztof Chwastek
Energies 2022, 15(3), 1128; https://doi.org/10.3390/en15031128 - 3 Feb 2022
Cited by 6 | Viewed by 2269
Abstract
Modeling of hysteresis loops may be useful for the designers of magnetic circuits in electric machines. The present paper focuses on the possibility to apply the Harrison model to describe hysteresis loops of grain-oriented electrical steel subject to compressive stress. The model extension [...] Read more.
Modeling of hysteresis loops may be useful for the designers of magnetic circuits in electric machines. The present paper focuses on the possibility to apply the Harrison model to describe hysteresis loops of grain-oriented electrical steel subject to compressive stress. The model extension is achieved by introduction of an additional term into the equation that describes irreversible magnetization process. The extension term does not include a product of stress and magnetization, as could be anticipated from Sablik’s theory, applicable, e.g., to the Jiles–Atherton model. The present contribution points out the fundamental differences between the two aforementioned modeling approaches, which are based on different philosophies despite some apparent similarities. The modeling results are in a qualitative agreement with the experimental results obtained from a single sheet tester for a representative commercially available grain-oriented electrical steel grade 0.27 mm thick. Full article
(This article belongs to the Special Issue Modeling and Optimal Design of Electromagnetic Devices)
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15 pages, 4485 KiB  
Article
A Novel Model of Electromechanical Contactors for Predicting Dynamic Characteristics
by Gongrun Wang, Yongxing Wang, Lifan Zhang, Shutian Xue, Enyuan Dong and Jiyan Zou
Energies 2021, 14(22), 7466; https://doi.org/10.3390/en14227466 - 9 Nov 2021
Cited by 8 | Viewed by 1920
Abstract
To ensure the reliability of power supply, a dual power supply structure appears in the power distribution system. Power supply switching is a complex physical process. This paper presents a novel model of electromechanical contactors. This model can simulate the multi-physics process of [...] Read more.
To ensure the reliability of power supply, a dual power supply structure appears in the power distribution system. Power supply switching is a complex physical process. This paper presents a novel model of electromechanical contactors. This model can simulate the multi-physics process of power switching. This article completes the simulation framework for power switching through contactors for the first time. Among them, the structural topology for contactors is also proposed. On the basis of the novel structure topology, an equivalent magnetic circuit model is established to calculate the relationship between driving force, flux linkage, current, and displacement. Then, a co-simulation model is established between the above equations and Adams to obtain the speed characteristics and flight time of the contactor. Subsequently, through the use of Fluent and its secondary development, a magnetohydrodynamic model is established, and the above-mentioned velocity characteristics are imported into it to analyze the arcing characteristics of the contacts under the conditions of the transverse magnetic field and the insulating grid. The effectiveness of power switching is judged by comparing the flight time of the electromechanical model and the arcing time of the magnetohydrodynamic model. The prototype is manufactured and tested on the basis of simulation. Through experimental waveforms and high-speed photography, the accuracy of the simulation model and the practicability of the contactor are verified. Full article
(This article belongs to the Special Issue Modeling and Optimal Design of Electromagnetic Devices)
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15 pages, 4315 KiB  
Article
PMSM Torque-Speed-Efficiency Map Evaluation from Parameter Estimation Based on the Stand Still Test
by Carlos Candelo-Zuluaga, Jordi-Roger Riba and Antoni Garcia
Energies 2021, 14(20), 6804; https://doi.org/10.3390/en14206804 - 18 Oct 2021
Cited by 3 | Viewed by 2458
Abstract
During the last decades, a wide variety of methods to estimate permanent magnet synchronous motor (PMSM) performance have been developed. These methodologies have several advantages over conventional procedures, saving time and economic costs. This paper presents a new methodology to estimate the PMSM [...] Read more.
During the last decades, a wide variety of methods to estimate permanent magnet synchronous motor (PMSM) performance have been developed. These methodologies have several advantages over conventional procedures, saving time and economic costs. This paper presents a new methodology to estimate the PMSM torque-speed-efficiency map based on the blocked rotor test using a single-phase voltage source. The methodology identifies the stator flux linkage depending on the current magnitude and angle while providing a detailed estimation of the iron losses. The torque-speed-efficiency map provides detailed information of the motor efficiency along its operating region, including the nominal conditions and the maximum power envelope. The proposed methodology does not require knowing the geometry of the machine to perform any load test, and it also avoids using expensive measurement devices and a complex experimental setup. Moreover, the proposed method allows the PMSM performance to be reproduced by applying different control strategies, which is useful when testing different drives. The method does not require the application of any optimization algorithm, thus simplifying and speeding up the process to determine the performance. Experimental validation is carried out by comparing motor performances obtained through the proposed method with those obtained by means of a conventional experimental method and against finite element analysis (FEA). Full article
(This article belongs to the Special Issue Modeling and Optimal Design of Electromagnetic Devices)
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