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Electrical Machine Systems with High Efficiency, Reliability and Integration

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

Deadline for manuscript submissions: 30 April 2025 | Viewed by 1551

Special Issue Editors


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Guest Editor
College of Electrical Engineering, Zhejiang University, Hangzhou 310058, China
Interests: wind power generation; motor drive and advanced control

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Guest Editor
School of Electrical Engineering, Southeast University, Nanjing 210018, China
Interests: motor control; wireless power transfer; high-frequency converter

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Guest Editor
School of Engineering, University of Leicester, Leicester LE1 7RH, UK
Interests: electrical machine design; electrical propulsion systems; energy storage; data-driven design optimization
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Special Issue Information

Dear Colleagues,

In recent decades, significant advancements have been achieved in electrification, sustainability, and automation across many industries. Global electrification efforts to tackle carbon emissions and other environmental challenges will surely continue; therefore, the development of advanced electrical machines, which work as critical components in electrical propulsion and drive systems, is valuable for both academia and the industry sectors. To address the ever-increasing demands for electrical generation and propulsion systems in different applications, advanced electrical machines are required to provide high efficiency, high reliability, and the integrated design of machine drives.

The development of advanced electrical machines and drives, via the integration of electrical machine and power electronics devices, requires innovative approaches and efforts at both the component level and systematic level. Additionally, novel designs, optimization, and new techniques for manufacturing electrical machine and power electronics converters can facilitate the development of ground-breaking, high-performance machine and drive systems, thereby enabling high efficiency and high reliability. On the control side, cutting-edge control methods and algorithms, including predictive control, fault-tolerant control, and sensorless control, are being explored to enhance the performance of machine drive systems. Moreover, the integration of electrical machines and drives may also inspire further performance improvements from the systematic perspective. Thus, it is advantageous to promote the research and application of advanced electrical machines.

This Special Issue is dedicated to providing a platform for researchers to share their research and advancements in electrical machines and drives related to high efficiency, high reliability, and integrated machine drive systems, as well as to contribute to ongoing progress in this dynamic field.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Multi-phase electrical machines and drives;
  • Fault diagnosis and fault-tolerant control of electrical machines and converters;
  • Advanced linear motors and drives;
  • High-speed electrical machines and drives;
  • Non- or less permanent magnet machines (switched reluctance machine, hybrid excited machine, etc.);
  • Sensorless control of electrical machines;
  • High-power density motors and converters;
  • Motor and drive integrated system;
  • Loss modeling and high efficiency design of electrical machines and converters;
  • High reliability topology, structure, and assembly of electrical machines;
  • Multi-physics design of electrical machines;
  • Artificial-intelligence-assisted design of electrical machines and drives.

We look forward to hearing from you.

Prof. Dr. Tao Wang
Dr. Chenwen Cheng
Dr. Yang Xiao
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

  • multi-phase electrical machines and drives
  • fault diagnosis and fault-tolerant control of electrical machines and converters
  • advanced linear motors and drives
  • high speed electrical machines and drives
  • non- or less permanent magnet machines (switched reluctance machine, hybrid excited machine, etc.)
  • sensorless control of electrical machines
  • high-power density motors and converters
  • motor and drive integrated system
  • loss modeling and high efficiency design of electrical machines and converters
  • high reliability topology, structure, and assembly of electrical machines
  • multi-physics design of electrical machines
  • artificial-intelligence-assisted design of electrical machines and drives

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Published Papers (2 papers)

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Research

15 pages, 7886 KiB  
Article
Optimal Rotor Design for Reducing Electromagnetic Vibration in Traction Motors Based on Numerical Analysis
by Seung-Heon Lee, Si-Woo Song, In-Jun Yang, Ju Lee and Won-Ho Kim
Energies 2024, 17(23), 6206; https://doi.org/10.3390/en17236206 - 9 Dec 2024
Viewed by 601
Abstract
Interior permanent magnet synchronous motor (IPMSM) for traction applications have attracted significant attention due to their advantages of high torque and power density as well as a wide operating range. However, these motors suffer from high electromagnetic vibration noise due to their complex [...] Read more.
Interior permanent magnet synchronous motor (IPMSM) for traction applications have attracted significant attention due to their advantages of high torque and power density as well as a wide operating range. However, these motors suffer from high electromagnetic vibration noise due to their complex structure and structural rigidity. The main sources of this electromagnetic vibration noise are cogging torque, torque ripple, and radial force. To predict electromagnetic vibration noise, finite element analysis (FEA) with flux density analysis of the air gap is essential. This approach allows for the calculation of radial force that is the source of the vibration and enables the prediction of vibration in advance. The data obtained from these analyses provide important guidance for reducing vibration and noise in the design of electric motors. In this paper, the cogging torque and vibration at rated and maximum operating speed are analyzed, and an optimal cogging torque and vibration reduction model, with rotor taper and two-step skew structure, is proposed using the response surface method (RSM) to minimize them. The validity of the proposed model is demonstrated through formulations and FEA based entirely on numerical analysis and results. This study is expected to contribute to the design of more efficient and quieter electric motors by providing a solution to the electromagnetic vibration noise problem generated by IPMSM for traction applications with complex structures. Full article
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17 pages, 8568 KiB  
Article
Influence of Winding Configurations and Stator/Rotor Pole Combinations on Field Back-EMF Ripple in Switched Flux Hybrid Excited Machines
by Zhiyu Yang, Xiaoyong Sun, Ruizhao Han, Ruyu Shang, Zhen Chen and Xiangdong Liu
Energies 2024, 17(23), 5906; https://doi.org/10.3390/en17235906 - 25 Nov 2024
Viewed by 546
Abstract
Similar to armature back electromotive force (armature back-EMF), the back-EMF also exists in the field winding of hybrid excited machines. However, the existence of field back electromotive force (field back-EMF) is harmful to the safe and stable operation of machine systems, e.g., higher [...] Read more.
Similar to armature back electromotive force (armature back-EMF), the back-EMF also exists in the field winding of hybrid excited machines. However, the existence of field back electromotive force (field back-EMF) is harmful to the safe and stable operation of machine systems, e.g., higher losses, lower efficiency, higher torque ripple, and reduced control performance. This paper systematically investigates the influence of armature/field winding configurations together with stator/rotor pole combinations on the field back-EMF ripple in hybrid excited machines with switched-flux stators. The two-dimensional (2D) time-stepping finite element modeling and prototyping experiments are used for the research. The investigated field and armature coil pitches equal to 1, i.e., non-overlapped windings. The influential factors that are investigated in this paper mainly include the number of layers of field/armature windings, the number of field/armature coils, and the stator/rotor pole combinations. The results show that the field back-EMF’s harmonic order and peak-to-peak value are closely associated with field/armature winding configurations and stator/rotor pole combinations under various conditions. Finally, for validation of the results predicted by the finite element method, a prototype machine is built and tested. Overall, non-overlapped double-layer armature and field windings are recommended for the hybrid excited switched flux machines with various stator/rotor pole combinations to realize relatively lower field back-EMF under different conditions. Full article
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