Permanent Magnet Motors: State of the Art

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Electrical Machines and Drives".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 3650

Special Issue Editor

Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada
Interests: motor drive; model predictive control; power electronics

Special Issue Information

Dear Colleagues,

The permanent magnet synchronous motor (PMSM) is widely used in industrial production and automation. Its stator runs with a three-phase difference alternating current, while its rotor is a permanent magnet. The PMSM features several dominant advantages compared to other asynchronous motors, such as higher efficiency, higher torque performance, reduced size and weight, more reliability, less noise, etc. The PMSM thus has received great favor in applications such as wind energy generation, electrical vehicles, aerospace, etc. The advanced design of the PMSM structure, the material development of the permanent flux, and new control schemes are key approaches to improving the PMSM’s efficiency and reliability. This Special Issue serves this purpose with the objective to collect the latest innovations in PMSM design, operation, and control methodologies. Topics of interest include, but are not limited to, the following:

  1. Systematic physical structure design and development for the PMSM;
  2. Multi-physics analysis, modeling, and design for the integrated inverter-fed PMSM;
  3. Optimized control strategies for various inverter topologies for PMSM applications;
  4. Application of wide-bandgap devices with inverters for PMSM applications;
  5. Optimal design and system-level integration of PMSM operations, etc.;
  6. Resilient control and fault-tolerant operation of the PMSM.

Dr. Cheng Xue
Guest Editor

Manuscript Submission Information

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Keywords

  • PMSM
  • permanent flux
  • physical structure design
  • control scheme
  • efficiency
  • reliability

Published Papers (2 papers)

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Research

16 pages, 9539 KiB  
Article
Design to Reduce Cogging Torque and Irreversible Demagnetization in Traction Hybrid Motor Using Dy-free Magnet
by Si-Woo Song, Won-Ho Kim, Ju Lee and Dong-Hoon Jung
Machines 2023, 11(3), 345; https://doi.org/10.3390/machines11030345 - 02 Mar 2023
Viewed by 1225
Abstract
The PMSM (Permanent Magnet Synchronous Motor) is being studied a lot in traction motors for high efficiency and high performance. Usually, magnets containing rare earth elements are used. However, since rare earth elements are not suitable for future industries due to their limited [...] Read more.
The PMSM (Permanent Magnet Synchronous Motor) is being studied a lot in traction motors for high efficiency and high performance. Usually, magnets containing rare earth elements are used. However, since rare earth elements are not suitable for future industries due to their limited reserves, many studies on magnets excluding rare earth elements are being conducted. Magnets excluding rare earth elements have a low coercive force and are vulnerable to irreversible demagnetization, so their design must be robust. Additionally, the design used for reducing the cogging torque, which is a major variable of traction motors, is also important. Therefore, in this study, a design process for reducing irreversible demagnetization and cogging torque is proposed. There are three methods for this process. The first one is the application of the tapering structure, and the second one is the tapering skew structure. The third one is the application of an asymmetric air hole. As a result of these methods, the target irreversible demagnetization ratio was satisfied and the cogging torque was reduced. This was proven through FEA (Finite Element Analysis) and verified by comparing and analyzing the experimental results and simulation results of actual manufacturing. Full article
(This article belongs to the Special Issue Permanent Magnet Motors: State of the Art)
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17 pages, 5557 KiB  
Article
A Novel Methodology to Enhance the Smooth Running of the PM BLDC Motor Drive Using PWM-PWM Logic and Advance Angle Method
by Balamurali Surakasi, Raavi Satish, Balamurali Pydi, Hossam Kotb, Mokhtar Shouran and Bdereddin Abdul Samad
Machines 2023, 11(1), 41; https://doi.org/10.3390/machines11010041 - 30 Dec 2022
Cited by 2 | Viewed by 1920
Abstract
This paper addresses the active torque ripple compensation of a permanent magnet brushless direct-current motor (PMBLDC) drive with a new pulse width modulation (PWM) technique and advance angle method. Torque ripple is a well-known problem in BLDC motors which is produced by a [...] Read more.
This paper addresses the active torque ripple compensation of a permanent magnet brushless direct-current motor (PMBLDC) drive with a new pulse width modulation (PWM) technique and advance angle method. Torque ripple is a well-known problem in BLDC motors which is produced by a discrepancy between the stator current and the back electromotive force (back-emf) waveforms. The advanced angle method proposed in this paper generates a maximum torque in the PM BLDC motor by decreasing the displacement between the phase voltage and phase current in proportion to the load. Further, a simple and comprehensive PWM-PWM logic is proposed in this paper to reduce the torque ripples. The test results show that the BLDC motor drive achieves good steady-state performance while maintaining a quick dynamic response. The performance of the PWM-PWM logic and advance angle method, have been tested and compared with the practical results for the characteristics of DC bus voltage, DC bus current, electromagnetic torque, shaft torque, mechanical torque, phase voltage, phase current and PWM signal. Full article
(This article belongs to the Special Issue Permanent Magnet Motors: State of the Art)
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