Rotor design and optimization of synchronous reluctance machine with low torque ripple

IF 1.3 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Power Electronics Pub Date : 2024-08-30 DOI:10.1007/s43236-024-00898-y
Xiaoyi Chai, Yan Dong
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Abstract

The rotor structure of a synchronous reluctance machine (SynRM) affects the variation of reluctance and has an important effect on the torque performance of the machine. To improve the torque performance of SynRM, the optimization design of the rotor structure is essential. In this paper, a multi-objective snake optimizer (MOSO) is proposed by combining snake optimizer with multi-objective optimization strategies. Integrated with finite element analysis and the MOSO optimization method, the SynRM with a fluid-shaped rotor structure is optimized to improve torque performance. Compared with several algorithms, such as multi-objective genetic algorithm, multi-objective particle swarm optimizer, etc., the MOSO optimization method achieves better results in optimizing the fluid-shaped rotor structure with higher torque and lower torque ripple of the machines on its Pareto frontier, which verifies the superiority of the proposed MOSO optimization method. In addition, a Bezier-shaped flux barrier tip determined by curve fitting with arbitrariness is proposed to reduce the torque ripple of SynRM further. Different machines on the Pareto front of the MOSO optimization method are selected to optimize the shape of the flux barrier tip. The percentages of reduction in torque ripple for the SynRMs that have been designed with Bezier-shaped flux barrier tips are 27.27%, 47.21%, 69.71%, and 78.71%, respectively. The decrease of torque ripple for the several SynRMs verifies the effectiveness of the Bezier-shaped flux barrier tip.

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低扭矩纹波同步磁阻机的转子设计与优化
同步磁阻机(SynRM)的转子结构会影响磁阻的变化,并对机器的转矩性能产生重要影响。要提高同步磁阻机的转矩性能,转子结构的优化设计至关重要。本文将蛇形优化器与多目标优化策略相结合,提出了一种多目标蛇形优化器(MOSO)。结合有限元分析和 MOSO 优化方法,对具有流体形转子结构的 SynRM 进行了优化,以提高转矩性能。与多目标遗传算法、多目标粒子群优化器等几种算法相比,MOSO 优化方法在优化流体形转子结构方面取得了更好的效果,在其帕累托前沿上的机器具有更高的扭矩和更低的扭矩纹波,这验证了所提出的 MOSO 优化方法的优越性。此外,还提出了通过任意曲线拟合确定的贝塞尔形磁通屏障尖端,以进一步降低 SynRM 的转矩纹波。在 MOSO 优化方法的帕累托前沿选择不同的机器来优化磁通屏障尖端的形状。采用贝塞尔形磁通屏障尖端设计的同步磁阻机的扭矩纹波降低率分别为 27.27%、47.21%、69.71% 和 78.71%。几种 SynRM 扭矩纹波的降低验证了贝塞尔形磁通势垒尖端的有效性。
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来源期刊
Journal of Power Electronics
Journal of Power Electronics 工程技术-工程:电子与电气
CiteScore
2.30
自引率
21.40%
发文量
195
审稿时长
3.6 months
期刊介绍: The scope of Journal of Power Electronics includes all issues in the field of Power Electronics. Included are techniques for power converters, adjustable speed drives, renewable energy, power quality and utility applications, analysis, modeling and control, power devices and components, power electronics education, and other application.
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