Analysis and reduction of electromagnetic vibration in integral-slot PM machine by functional magnet structure

IF 1.1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Applied Electromagnetics and Mechanics Pub Date : 2024-02-01 DOI:10.3233/jae-220311

Yunhao Wang, Zhiguang Liu, Zhiyong Yang

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引用次数: 0

Abstract

It is significant to balances torque and vibration performance for the surface-mounted permanent magnet (PM) machines. This paper proposes a functional magnet structure to suppress the vibration response of integral-slot surface-mounted PM machines. At the same time, the torque ripple is also greatly reduced without sacrificing the average torque. Firstly, taking the 48-slot/8-pole PM machine as an example, the main sources of the air-gap radial force are analyzed based on the Maxwell stress equation. Thereby, the main PM flux density harmonic components that contribute to the radial force are pointed out. Secondly, the design method of different functional magnet structure is investigated. Then, the effects of different magnet shapes on the torque and vibration performances are compared. The result shows that the proposed sinusoidal+3rd-order harmonic injection functional magnet structure can effectively improve the vibration performance without sacrificing the average torque. Finally, the prototype of the 48-slot/8-pole PM with functional magnet structure is manufactured, and the experiments are carried out for validation.

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利用功能磁体结构分析和减少整体槽永磁机的电磁振动

平衡表面贴装永磁（PM）机器的扭矩和振动性能意义重大。本文提出了一种功能性磁体结构，用于抑制整体槽表面贴装式永磁电机的振动响应。同时，在不牺牲平均转矩的情况下，还大大降低了转矩纹波。首先，以 48 槽/8 极永磁机为例，根据麦克斯韦应力方程分析了气隙径向力的主要来源。由此，指出了造成径向力的主要永磁磁通密度谐波成分。其次，研究了不同功能磁体结构的设计方法。然后，比较了不同磁体形状对扭矩和振动性能的影响。结果表明，所提出的正弦+3 次谐波注入功能磁体结构可以在不牺牲平均扭矩的情况下有效改善振动性能。最后，制造了带有功能磁体结构的 48 槽/8 极永磁发电机原型，并进行了实验验证。

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来源期刊

International Journal of Applied Electromagnetics and Mechanics 物理-工程：电子与电气

CiteScore

1.70

自引率

0.00%

发文量

100

审稿时长

4.6 months

期刊介绍： The aim of the International Journal of Applied Electromagnetics and Mechanics is to contribute to intersciences coupling applied electromagnetics, mechanics and materials. The journal also intends to stimulate the further development of current technology in industry. The main subjects covered by the journal are: Physics and mechanics of electromagnetic materials and devices Computational electromagnetics in materials and devices Applications of electromagnetic fields and materials The three interrelated key subjects – electromagnetics, mechanics and materials - include the following aspects: electromagnetic NDE, electromagnetic machines and devices, electromagnetic materials and structures, electromagnetic fluids, magnetoelastic effects and magnetosolid mechanics, magnetic levitations, electromagnetic propulsion, bioelectromagnetics, and inverse problems in electromagnetics. The editorial policy is to combine information and experience from both the latest high technology fields and as well as the well-established technologies within applied electromagnetics.