Optimisation of reverse salient rotor for interior permanent magnet synchronous motor and experimental validation

Ai, Qiang; Wei, Hongqian; Li, Tao; Fan, Likang; Zhang, Youtong

doi:10.1049/elp2.12120

Cited by 6 publications

(1 citation statement)

References 37 publications

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“…P ermanent magnet synchronous machines (PMSMs) have the characteristics of high efficiency, light weight, small size, and high torque density, especially in the field of electric vehicles, and the development of permanent magnet motor has become a key technology [1][2][3][4][5]. Nevertheless, conventional interior permanent magnet synchronous machines necessitate an increase in i d to expand the constant power speed range of the machine.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Characteristic Analysis and Optimization of a Novel Reverse Salient PMSM for Wide Speed Range

Lu,

Liu,

Liu

et al. 2024

PIER C

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To address the issues associated with the conventional permanent magnet synchronous machine, particularly difficulties in adjusting the air-gap flux barrier and the limited range of constant power speed regulation, this paper introduces a novel approach. It combines the intensifying-flux effect with the permanent magnet synchronous machine to propose a new design known as the reverse salient permanent magnet synchronous machine (RS-PMSM) with a multilayered flux barrier. This innovation serves to enhance the working performance of the permanent magnets. The paper's structure includes an initial introduction to the RS-PMSM, outlining its structure and operational principles. Following this, an optimization approach employing NSGA-II is used to define the RS-PMSM's optimization model. The objectives of this optimization encompass torque, torque ripple, and the reverse salient pole ratio. The study then proceeds to conduct a comprehensive set of performance analyses and comparisons, involving the initial machine, optimized machine, and a conventional machine. The performance metrics considered include no-load air-gap flux density, reverse electromotive force, torque characteristics, speed range, and efficiency. Finally, the study verifies the design rationality of the RS-PMSM, highlighting its potential to address the challenges posed by traditional permanent magnet synchronous motors.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Characteristic Analysis and Optimization of a Novel Reverse Salient PMSM for Wide Speed Range

Lu,

Liu,

Liu

et al. 2024

PIER C

View full text Add to dashboard Cite

show abstract

Structure of a permanent magnet motor used for electric vehicles to suppress the eddy current effect

Zhang

Xie

et al. 2022

J. Power Electron.

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Investigation of a novel intensifying-flux hybrid excited permanent magnet machine for electric vehicles

Lu,

Liu,

Liu

et al. 2024

COMPEL

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Purpose To address the issues of the insufficient output torque associated with the application of intensifying-flux permanent magnet (PM) machines in electric vehicles, this paper aims to propose an intensifying-flux hybrid excitation PM machine. It is possible to adjust the air gap magnetic field by adjusting the field current in the excitation winding, thereby increasing the torque output capability and speed range of the machine. Design/methodology/approach First, a novel intensifying-flux hybrid excited permanent magnet synchronous machine (IF-HEPMSM) is proposed on the basis of intensifying-flux permanent magnet synchronous machine (IF-PMSM) and an equivalent magnetic circuit model is established. Second, the tooth width and yoke thickness of the machine stator are optimized to ensure the overload capacity of the machine while effectively improving the wide flux regulation range. Furthermore, the electromagnetic characteristics of the IF-HEPMSM are investigated and compared with the IF-PMSM and conventional permanent magnet synchronous machine (PMSM) by using finite element simulations. Findings The id of IF-HEPMSM and IF-PMSM is greater than zero low-speed magnetizing current. And the flux-weakening current of the IF-HEPMSM is 18% and 3% smaller than of the conventional PMSM and IF-PMSM. Practical implications Aiming at the problems of IF-PMSM applied to electric vehicles, this paper proposes an IF-HEPMSM. The air gap magnetic field is adjusted by controlling the current of the excitation winding to improve the reliability of the machine. Therefore, the IF-HEPMSM combines the advantages of high-power density and high efficiency of the PMSM and the controllable magnetic field of the electro-excitation machine, which is of great engineering value when applied in the field of electric vehicles. Originality/value The proposed IF-HEPMSM offers better flux regulation capability with electromagnetic characteristics analysis and maps of dq-axis current as compared to IF-PMSM and conventional PMSM. Moreover, the improvement of the torque can make up for the shortcomings of the insufficient torque output capability of the IF-PMSM.

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Optimisation of reverse salient rotor for interior permanent magnet synchronous motor and experimental validation

Cited by 6 publications

References 37 publications

Electromagnetic Characteristic Analysis and Optimization of a Novel Reverse Salient PMSM for Wide Speed Range

Electromagnetic Characteristic Analysis and Optimization of a Novel Reverse Salient PMSM for Wide Speed Range

Structure of a permanent magnet motor used for electric vehicles to suppress the eddy current effect

Investigation of a novel intensifying-flux hybrid excited permanent magnet machine for electric vehicles

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