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Modeling and Optimal Control for Electrical Machines

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

Deadline for manuscript submissions: closed (5 March 2026) | Viewed by 1029

Special Issue Editor


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Guest Editor
Faculty of Electrical Engineering, Department of Electrical Machines and Drives, West Pomeranian University of Technology in Szczecin, al. Piastów 17, 70-310 Szczecin, Poland
Interests: electrical machines; numerical field calculations; optimization of electromagnetic fields; renewable energy technologies; electrical engineering; power generation
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Special Issue Information

Dear Colleagues,

Electric machines have become so deeply embedded in everyday technologies that their presence often goes unnoticed. Yet, they are crucial components, ensuring reliable and efficient operation in a wide range of applications by fulfilling both actuation and control functions. In fact, they stand at the core of today’s industrial transformation, enabled by electromobility and the integration of renewable energy. For engineers and researchers, the challenge goes far beyond their obvious ubiquity; instead, it lies in advancing modelling techniques, developing optimal control strategies, and improving design approaches to maximize the efficiency of energy conversion and the reliability of systems.

This Special Issue is dedicated to presenting and disseminating recent advances in the theory, modelling, optimal control, design, and application of both rotating and linear electrical machines. We welcome contributions in the form of original research papers and reviews, particularly those highlighting novel modelling methods, advanced control schemes, and innovative engineering solutions for the next generation of electrical machines.

The scope of this Special Issue includes, but is not limited to, the following topics:

  • Modelling, simulation, and analysis methods for electrical machines;
  • Optimal control strategies for rotating and linear machines;
  • Machine optimisation processes, including design and performance enhancement;
  • Advanced supply and control techniques for electrical machines;
  • Integration of power electronics systems for high-performance control;
  • Hybrid excited and unconventional machine topologies in the context of control optimisation;
  • Thermal and mechanical analyses supporting accurate modelling and control;
  • Applications of electrical machines in renewable energy and electromobility as benchmarks for modelling and control approaches;
  • Novel computational tools and frameworks for system-level optimisation;
  • Case studies on permanent magnet synchronous, synchronous reluctance, induction, switched reluctance, brushless DC, and linear machines, with emphasis on modelling and control aspects;
  • All other aspects of permanent magnet synchronous machines, synchronous reluctance machines, induction machines, switched reluctance machines, brushless dc machines, linear machines, etc.

Dr. Marcin Wardach
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 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

  • electric machines
  • standard and new designs
  • hybrid excited machines
  • new applications
  • modelling and optimization
  • control
  • numerical field calculations
  • electrical vehicles
  • permanent magnet machines
  • wind power energy

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Published Papers (2 papers)

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Research

20 pages, 2963 KB  
Article
Characteristic Analysis of Eddy Current Braking System with AC Excitation and Auxiliary Capacitor
by Xu Niu, Baoquan Kou and Lu Zhang
Energies 2026, 19(9), 2118; https://doi.org/10.3390/en19092118 - 28 Apr 2026
Viewed by 325
Abstract
The eddy current braking system (ECBS) is a crucial non-contact technology for high-speed railway. Conventional DC-excited systems face significant challenges such as excessive rail heating and high-capacity power supply requirements. This paper proposes a novel ECBS with AC excitation and auxiliary capacitor to [...] Read more.
The eddy current braking system (ECBS) is a crucial non-contact technology for high-speed railway. Conventional DC-excited systems face significant challenges such as excessive rail heating and high-capacity power supply requirements. This paper proposes a novel ECBS with AC excitation and auxiliary capacitor to achieve integrated energy recovery and power supply optimization. To evaluate its performance, a rigorous analytical framework is developed. First, a 2D subdomain model is established by incorporating the longitudinal end effect to solve the magnetic field distribution. Subsequently, an equivalent circuit is derived from the subdomain results to investigate steady-state braking characteristics and power flow. Analysis results demonstrate that the proposed system not only generates controllable braking force but also converts a portion of kinetic energy into storable electrical energy, effectively mitigating secondary rail heating. Most significantly, the implementation of an optimal auxiliary capacitor (134 μF) is found to reduce the required inverter capacity compared to inverter-only conditions. These findings provide a theoretical foundation and a practical design tool for developing high-performance, energy-efficient braking systems in high-speed transportation. Full article
(This article belongs to the Special Issue Modeling and Optimal Control for Electrical Machines)
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17 pages, 4286 KB  
Article
Refinement of the Parameters of an Induction Motor by Changing the Design from an Internal Rotor to an External Rotor
by Maria Dems, Krzysztof Komeza, Mateusz Kolakowski, Filip Marczak, Jakub Makolski, Kacper Plesiak, Marcin Stepien and Aleksander Zielinski
Energies 2026, 19(6), 1470; https://doi.org/10.3390/en19061470 - 15 Mar 2026
Viewed by 425
Abstract
To varying degrees, optimization is a widely accepted procedure in the design of electrical machines, especially induction machines. This is associated with stringent requirements stemming from international regulations. The use of induction machines in new solutions, including low-speed vehicle drives, introduces challenges because [...] Read more.
To varying degrees, optimization is a widely accepted procedure in the design of electrical machines, especially induction machines. This is associated with stringent requirements stemming from international regulations. The use of induction machines in new solutions, including low-speed vehicle drives, introduces challenges because they require high electromagnetic torque at low speeds. These requirements, including dimensional constraints, mean that despite sophisticated optimization, the classic design does not achieve the desired results. In such a case, a general redesign of the motor is necessary, replacing the classic internal rotor motor with an external rotor motor. This paper presents an example of such a design change as part of the parameter refinement process for two selected high-power, high-pole induction motors. Both the FEM method and a suitably adapted analytical method were used to investigate the impact of the design change. This enabled verification of the analytical method’s accuracy and rapid modeling of phenomena and parameters in external rotor motors. The proposed approach can be used to design novel structures and select motor controls for various applications. Full article
(This article belongs to the Special Issue Modeling and Optimal Control for Electrical Machines)
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