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The Research Progress on Electrical Machine Technologies and Their Applications
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The Research Progress on Electrical Machine Technologies and Their Applications

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

Deadline for manuscript submissions: closed (22 September 2023) | Viewed by 8757

Special Issue Editors

Prof. Dr. Xu Liu

E-Mail Website
Guest Editor
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
Interests: design and application of switched reluctance machines; permanent magnet machines; dc/dc converters
Special Issues, Collections and Topics in MDPI journals
Dr. Shanhu Li

E-Mail Website
Guest Editor
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
Interests: matrix converter for electric drive; DC-DC converter; PWM technique
Dr. Qingguo Sun

E-Mail Website
Guest Editor
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
Interests: electrical motor drives; electrical motor design; electric vehicles; hybrid vehicles; high-efficiency power converters

Special Issue Information

Dear Colleagues,

Nowadays, rotating electrical machines are widely used, from applications in people’s daily life, such as in domestic appliances, electrical vehicles, unmanned aerial vehicles, high-speed railways, etc., to industry applications, such as in wind power generators, robots, mining machines and so on. The need to reduce energy consumption and mitigate pollution have driven the topology development of electrical machines with the design of new materials and manufacturing processes able to achieve higher torque density, power density, reliability and efficiency. Moreover, new electrical machine topologies further advance the research on high-power-density machine drives, fault tolerance control strategies, low vibration and noise control methods and intelligence systems.

This Special Issue aims to present and disseminate the most recent advances in the theory, design, modelling, application and control of electrical machines and systems. Both high-quality original research and review articles are welcome. 

Submission topics include, but are not limited to:

  • Novel topologies of permanent-magnet machines;
  • New developments in permanent-magnet machines;
  • Switched reluctance machines;
  • Synchronous reluctance machines;
  • Fault tolerance electrical machines;
  • Optimal design methodologies;
  • Advanced modelling approaches;
  • Noise and vibration prediction in electrical machines;
  • Novel power electronics for the electrical machines;
  • Reliability and safety of electrical machine systems;
  • Advanced control strategy for energy management.

Prof. Dr. Xu Liu
Dr. Shanhu Li
Dr. Qingguo Sun
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

  • permanent magnet machines
  • switched reluctance machines
  • synchronous reluctance machine
  • optimal design
  • advanced control strategy

Published Papers (5 papers)

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Research

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27 pages, 5448 KiB  
Article
Analytical Approach for Estimating the Average Torque of Synchronous Motors by Using the Flux Density in the Air Gap
by Zheng-Feng Li, Lin-Wei Huang, Shih-Gang Chen, Yu-Tse Hsu, Jun-Ming Hsu and Ming-Shi Huang
Energies 2023, 16(23), 7832; https://doi.org/10.3390/en16237832 - 28 Nov 2023
Viewed by 1292
Abstract
In this study, a generalized torque estimation method is proposed for synchronous motors, including surface permanent magnet synchronous motors (SPMSMs), synchronous reluctance motors (SynRMs), and interior permanent magnet synchronous motors (IPMSMs) for building the analytical motor model. The average motor torque is estimated [...] Read more.
In this study, a generalized torque estimation method is proposed for synchronous motors, including surface permanent magnet synchronous motors (SPMSMs), synchronous reluctance motors (SynRMs), and interior permanent magnet synchronous motors (IPMSMs) for building the analytical motor model. The average motor torque is estimated using the Lorentz force by the generated flux density in the air gap to determine the relationships among torque, flux density, and injected current. In the proposed method, the generated flux density is derived step by step by considering the effects of magnetic flux saturation, the stator slot, the rotor barrier, and permanent magnets (PMs) to ensure that the generated average torque complies with the operating condition of the motor. To verify the proposed method, the output torque of finite element analysis (FEA), Maxwell 2D, is compared to the proposed method in a SPMSM. Moreover, a phasor diagram is plotted to determine the mechanism through which torque is generated in SynRMs and IPMSMs. A SynRM and an IPMSM with ferrites PMs are analyzed using the proposed method, FEA, and the experimental results of this study indicate the effectiveness. Full article
(This article belongs to the Special Issue The Research Progress on Electrical Machine Technologies and Their Applications)
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16 pages, 9491 KiB  
Article
Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
by Jiaqiang Guo, Xu Liu, Kaiyuan Lu and Ziqiang Zhu
Energies 2022, 15(24), 9287; https://doi.org/10.3390/en15249287 - 7 Dec 2022
Viewed by 1060
Abstract
To identify the parameters of variable flux reluctance machines (VFRMs), the input voltage value is usually obtained from the reference voltage indirectly. However, the reference and actual voltages may be different due to the nonlinearity of the open winding inverter when using zero-sequence [...] Read more.
To identify the parameters of variable flux reluctance machines (VFRMs), the input voltage value is usually obtained from the reference voltage indirectly. However, the reference and actual voltages may be different due to the nonlinearity of the open winding inverter when using zero-sequence current, leading to the inaccuracy of parameter identification. To solve this problem, this paper proposes an equivalent nonlinearity voltage error model of the open winding inverter to compensate for the input voltage of VFRM during the online parameter identification. Since in the proposed method the phase current direction is not required, the calculation time can be reduced. Moreover, in the developed parameter identification model of VFRM the derived equivalent nonlinear voltage error is used to correct the input of the identification model so as to improve the accuracy of parameters. Finally, the experimental results on the prototype VFRM are presented for verification. Full article
(This article belongs to the Special Issue The Research Progress on Electrical Machine Technologies and Their Applications)
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17 pages, 3723 KiB  
Article
Research on Space Vector Overmodulation Technology of Two-Level PWM Converters
by Jin Zhou, Shanhu Li, Jianning Zhang, Tianrui Fang and Xiuyun Zhang
Energies 2022, 15(19), 7086; https://doi.org/10.3390/en15197086 - 27 Sep 2022
Cited by 4 | Viewed by 2013
Abstract
In this paper, the characteristics of the voltage transfer ratio (VTR) and low-order harmonics of the major modern space vector overmodulation strategies for two-level PWM converters are discussed under different VTRs, and the complexity of the modulation algorithm is subsequently elaborated. First, the [...] Read more.
In this paper, the characteristics of the voltage transfer ratio (VTR) and low-order harmonics of the major modern space vector overmodulation strategies for two-level PWM converters are discussed under different VTRs, and the complexity of the modulation algorithm is subsequently elaborated. First, the principles of these overmodulation strategies are summarized. After that, the accuracy and linearization of the VTR are obtained using the Fourier transform analysis, and the relationship between the main low harmonic components and the VTR is obtained in the same way. All the analysis results are verified through experiments. In addition, the merits and demerits of these overmodulation strategies and applications are revealed by comparing the simplicity of their modulation algorithm, digitization, and other characteristics. Finally, this paper reveals the essence of space vector overmodulation strategies. The results facilitate the design, performance prediction, and development of high-performance overmodulation strategies, as well as the transplantation of space vector overmodulation strategies into different converter topologies. Full article
(This article belongs to the Special Issue The Research Progress on Electrical Machine Technologies and Their Applications)
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17 pages, 8708 KiB  
Article
Anti-Disturbance Integrated Position Synchronous Control of a Dual Permanent Magnet Synchronous Motor System
by Xiuyun Zhang, Zhiqiang Wang and Tao Liu
Energies 2022, 15(18), 6697; https://doi.org/10.3390/en15186697 - 13 Sep 2022
Cited by 6 | Viewed by 1173
Abstract
In order to solve the problem that the position synchronous performance of dual permanent magnet synchronous motor servo system is easily affected by parameter perturbation and load disturbance, an anti-disturbance integrated position synchronous control strategy of dual permanent magnet synchronous motor system is [...] Read more.
In order to solve the problem that the position synchronous performance of dual permanent magnet synchronous motor servo system is easily affected by parameter perturbation and load disturbance, an anti-disturbance integrated position synchronous control strategy of dual permanent magnet synchronous motor system is proposed. Firstly, the integral mathematical model of a dual permanent magnet synchronous motor system is established. After that, the third-order linear extended state observer is constructed to observe and compensate for disturbance in order to improve the anti-disturbance performance of the position loop. At the same time, a cross-coupled position synchronous compensator is added to improve the synchronous performance of the system, and through the Bode diagram analysis method in the frequency domain, the system stability and anti-disturbance performance are researched. Finally, the effectiveness of the proposed algorithm is verified by experimental research. Full article
(This article belongs to the Special Issue The Research Progress on Electrical Machine Technologies and Their Applications)
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Review

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21 pages, 754 KiB  
Review
Review on Test Benches Studying Sliding Electrical Contact and Synthesis of Experimental Results
by Théo Kziazyk, Eric Gavignet, Pierre-Henri Cornuault, Philippe Baucour and Didier Chamagne
Energies 2023, 16(3), 1294; https://doi.org/10.3390/en16031294 - 25 Jan 2023
Cited by 3 | Viewed by 2506
Abstract
Sliding electrical contacts are commonly used with a slip ring to collect the current in moving system generators, alternators, or electrical motors. These contacts are also found in electrical transports without batteries, which are mostly supplied by means of a pantograph–catenary system. These [...] Read more.
Sliding electrical contacts are commonly used with a slip ring to collect the current in moving system generators, alternators, or electrical motors. These contacts are also found in electrical transports without batteries, which are mostly supplied by means of a pantograph–catenary system. These systems are fraught with numerous issues. Among them, it is worth highlighting wear and heating, which lead to failures and pre-worn materials. Moreover, with the increase in speed and improvements in technologies and materials, new problems emerge. This is the case with the substitution of the classic copper strip with graphite or copper-impregnated graphite. Multiple works that studied sliding electrical contacts have been achieved recently, some by trying to create a model of the system based on experimental results, and others only based on experimental works and measurements. This paper aims to review articles from this last category by making a synthesis of different test benches used and then by opening a discussion based on different results highlighted by scholars. This discussion is divided into five points that constitute the system inputs. These are the environment, material, normal load, sliding speed, and current. Based on this discussion, a conclusion attempts to evaluate topics where results and trends are commonly established by authors and topics where there is a lack of work or some conflicts in the results or trends between different articles. For this last point, some perspectives are given for further experimental works. Full article
(This article belongs to the Special Issue The Research Progress on Electrical Machine Technologies and Their Applications)
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