Optimal design of cogging torque and stator auxiliary slot parameters for ultra-high-speed permanent magnet synchronous motors

doi:10.3969/j.issn.1000-1565.2025.06.002

Abstract

Abstract: The cogging torque can cause vibration and noise in the motor. Opening auxiliary slots in the stator teeth can effectively reduce the amplitude of cogging torque and suppress cogging torque pulsation. Different shapes and quantities of auxiliary slots have different effects on cogging torque, so it is necessary to design and optimize the stator auxiliary slot parameters reasonably. This article proposes a parameter optimization based design method for the role of stator auxiliary slots in cogging torque suppression.- DOI:10.3969/j.issn.1000-1565.2025.06.002超高速永磁同步电机齿槽转矩与定子辅助槽参数优化设计张冬冬^1,2,董亲源¹,荣存浩¹,朱志豪¹,孙建华³,孙丽霞³,林晓刚⁴,褚帅君^2,5(1.广西大学电气工程学院,广西南宁 530004;2.内蒙古工业大学新能源学院,内蒙古呼和浩特 010051;3.广西大学化学化工学院,广西南宁 530004;4.中国科学院福建物质结构研究所,福建福州 350002;5.西安交通大学电气工程学院,陕西西安 710049)摘要:齿槽转矩会使电机产生振动和噪声,在定子齿部开辅助槽能有效降低齿槽转矩幅值,抑制齿槽转矩脉动,不同形状和数量的辅助槽对齿槽转矩的影响有所不同,因此需要合理设计和优化定子辅助槽参数.针对定子辅助槽在齿槽转矩抑制中的作用,提出一种基于参数优化的设计方法.通过建立电机齿槽转矩解析数学模型与仿真模型,分析辅助槽形状和数量对齿槽转矩的影响规律,并基于响应面模型结合多目标优化的方法,确定了辅助槽大小和位置的最优参数组合.仿真与实验结果表明,优化后的辅助槽结构显著降低了齿槽转矩,同时对电机电磁性能影响较小.本研究为高速永磁电机齿槽转矩抑制问题提供了高效的参数优化设计思路.关键词:高速永磁同步电机;齿槽转矩;定子辅助槽;多目标优化;有限元分析中图分类号:TM351 文献标志码:A 文章编号:1000-1565(2025)06-0570-12Optimal design of cogging torque and stator auxiliary slot parameters for ultra-high-speed permanent magnet synchronous motorsZHANG Dongdong^1,2, DONG Qinyuan¹, RONG Cunhao¹, ZHU Zhihao¹, SUN Jianhua³, SUN Lixia³, LIN Xiaogang⁴, CHU Shuaijun^2,5(1. School of Electrical Engineering, Guangxi University,Nanning 530004,China;2. School of Renewable Energy, Inner Mongolia University of Technology,Hohhot 010051,China;3. School of Chemistry and Chemical Engineering, Guangxi University,Nanning 530004,China;4. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002,China;5. School of Electrical Engineering, Xian Jiaotong University,Xian 710049,China)Abstract: The cogging torque can cause vibration and noise in the motor. Opening auxiliary slots in the stator teeth can effectively reduce the amplitude of cogging torque and suppress cogging torque pulsation. Different shapes and quantities of auxiliary slots have different effects on cogging torque, so it is necessary to design and optimize the stator auxiliary slot parameters reasonably. This article proposes a parameter optimization based design method for the role of stator auxiliary slots in cogging torque suppression.- 收稿日期:2024-12-02;修回日期:2025-05-08 基金项目:国家自然科学基金项目(52567005;52107083) 第一作者:张冬冬(1990—),男,内蒙古工业大学教授,博士生导师,主要从事高性能电机与智能装备制造、智慧能源系统及其装备技术方向研究.E-mail:dongdongzhang@imut.edu.cn 通信作者:褚帅君(1988—),男,内蒙古工业大学讲师,博士,主要从事高温高速永磁电机的设计研究.E-mail:chushuijun@stu.xjtu.edu.cn 第6期张冬冬等:超高速永磁同步电机齿槽转矩与定子辅助槽参数优化设计河北大学学报(自然科学版) 第45卷By establishing a mathematical model and simulation model for the analysis of motor cogging torque, the influence of auxiliary slot shape and quantity on cogging torque was analyzed. Based on the response surface model combined with multi-objective optimization method, the optimal parameter combination for the size and position of auxiliary slots was determined. Simulation and experimental results show that the optimized auxiliary slot structure significantly reduces cogging torque, while having a small impact on the electromagnetic performance of the motor. This study provides an efficient parameterized optimization design approach for suppressing cogging torque in high-speed permanent magnet motors.

Key words: high-speed permanent magnet synchronous motor, cogging torque, stator auxiliary slot, multi-objective optimization, finite element analysis

CLC Number:

TM351

ZHANG Dongdong, DONG Qinyuan, RONG Cunhao, ZHU Zhihao, SUN Jianhua, SUN Lixia, LIN Xiaogang, CHU Shuaijun. Optimal design of cogging torque and stator auxiliary slot parameters for ultra-high-speed permanent magnet synchronous motors[J]. Journal of Hebei University(Natural Science Edition), 2025, 45(6): 570-581.

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