双并列转子永磁直驱电机转子不平衡力分析与优化

doi:10.19595/j.cnki.1000-6753.tces.230427

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (819 KB)
输出: BibTeX | EndNote (RIS)

摘要

双并列转子永磁直驱电机受轴间距限制,设计时会切掉部分定子铁心和绕组,造成转子电磁力不平衡。为最大限度抑制转子所受的不平衡电磁力,本文从双并列转子结构出发,分析了电机绕组电感参数不对称的原因,提出了通过合理设计线圈跨距和分布平衡了三相电感。在此基础上,构建了转子所受总电磁力的数学模型,理论分析了各个分力的来源及影响因素,研究了各个分力对转子所受总电磁力的影响,提出了优化占空角、优化耦合间距、采用定子端部不对称结构、采用转子偏心结构和切除部分单元电机等五种优化方法,实现对转子所受电磁力的优化,探讨了不同方法的优化效果,以及其对转矩脉动的影响,总结了不同优化方法的优缺点。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	陶大军
	陈阳
	李峥
	戈宝军

关键词 ：双并列转子, 永磁直驱电机, 电磁力, 优化方法

Abstract：

Most parallel synchronous drive equipment such as two-roll mill and twin-screw pump are driven by induction motor with synchronous mechanical gear. Such drive system has problems such as large volume, poor synchronization of master and slave shafts and the need for regular maintenance. Dual-parallel rotor permanent magnet direct-driven motor has gradually come into view.
Due to the limitation of distance between rotating shafts, part of stator core and windings will be cut off in the design of dual-parallel rotor permanent magnet direct-driven motor, resulting in unbalanced rotor electromagnetic force. In order to suppress the unbalanced electromagnetic force on the rotor to the maximum extent, this paper analyzes the reasons for the asymmetry of inductance parameters of the motor windings from the double-parallel rotor structure, discusses and calculates the inductance parameters of the motor with windings pitch of 4 and 3, and proposes to balance the three-phase inductance through reasonable design of coil pitch and windings distribution. On this basis, the mathematical model of the total electromagnetic force on the rotor is constructed, the source and influencing factors of each component force are analyzed theoretically, and the influence of each component force on the total electromagnetic force on the rotor is studied. Five optimization methods are proposed to optimize the electromagnetic force on the rotor, including optimizing the duty angle, optimizing the coupling distance, adopting the asymmetric stator end structure, adopting the eccentric rotor structure and eliminating part of the unit motors. Finally, the optimization effects of different methods and their effects on torque ripple are discussed, and the advantages and disadvantages of different optimization methods are summarized, which lays a foundation for the research and development of dual-parallel rotor permanent magnet direct-driven motor.
The following conclusions can be drawn from the simulation analysis: 1) When the dual-parallel rotor permanent magnet direct-driven motor adopts the modular structure, the long-pitch coil will make the three-phase inductance parameters asymmetric, and the three-phase inductance can be effectively balanced by reasonable selection of the winding pitch and the head end of the A-phase winding. 2) The electromagnetic force F_totalon the rotor consisted of the electromagnetic force F₁ between the stator with windings and the corresponding rotor, the magnetic force F_mag between two permanent magnet rotors in the coupling area, the force F_end between the core end and the rotor outside the duty area in the coupling area, the magnetic resistance force F_end,cogof the rotor against the core end in the coupling area and additional electromagnetic force F_ad. The X direction force of F_total is related to the above forces, while the Y direction force of F_total is only relevant to F₁. F₁, F_mag and F_endare the most important components of F_total. 3) According to the analysis of the F_total, five methods are proposed to weaken the F_total, including optimizing the duty angle, optimizing the coupling distance, adopting the asymmetric structure of the stator end, adopting the eccentric structure of the rotor and eliminating part of the unit motors. The influence law of the five optimization methods on the electromagnetic force is given, and the advantages and disadvantages of the five optimization methods are discussed. Among them, the method with rotor eccentric structure has the best optimization effect, but it requires higher processing technology. The method of eliminating partial unit motors is the most practical. 4) The adoption of five optimization methods can make the motor output rated electromagnetic torque. In practical application, the combination of various optimization methods can be considered.

Key words： Dual-parallel rotor permanent magnet direct-driven motor electromagnetic force optimization method

PACS:

TM351

基金资助:

国家自然科学基金项目（51777048）资助

通讯作者: 陶大军, 男,1982年生,教授,博士生导师,研究方向为大电机和特种电机的基础理论、设计与分析。E-mail：tao.dj@163.com

作者简介: 陈阳, 男,1995年生,博士研究生,研究方向为永磁及特种电机的设计与分析。 E-mail：chenyang2022@foxmail.com

引用本文:

陶大军, 陈阳, 李峥, 戈宝军. 双并列转子永磁直驱电机转子不平衡力分析与优化[J]. 电工技术学报, 0, (): 8930-. Tao Dajun, Chen Yang, Li Zheng, Ge Baojun. Analysis and Optimization of Unbalanced Electromagnetic Force on the Rotor of Dual-parallel Rotor Permanent Magnet Direct-driven Motor. Transactions of China Electrotechnical Society, 0, (): 8930-.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.230427 https://dgjsxb.ces-transaction.com/CN/Y0/V/I/8930

[1] 孙立国. 二辊带钢轧机机座刚度计算[J]. 机械设计,2021,38(S1):225-227.
Sun Liguo.Calculation of stand stiffness of 2H strip mill[J]. Journal of Machine Design,2021,38(S1):225-227.
[2] 周兴杰,李峰. 热轧板带立辊轧机主传动型式分析比较[J]. 轧钢,2021,38(04):75-79.
Zhou Xingjie,Li Feng.Analysis and comparison of main drive types of the edge mill for the hot rolled plate and strip[J]. Steel Rolling,2021,38(04):75-79.
[3] Valavi M, Le Besnerais J, Nysveen A.An investigation of zeroth-order radial magnetic forces in low-speed surface-mounted permanent magnet machines[J]. IEEE Transactions on Magnetic,2016,52(8):1-6.
[4] Crider JM, Sudhoff SD.An inner rotor flux-modulated permanent magnet synchronous machine for low-speed high-torque applications[J]. IEEE Transactions on Energy Conversion,2015, 30(3):1247-1254.
[5] 张炳义,贾宇琪,冯桂宏. 新型模块组合式定子永磁电机[J]. 电工技术学报,2015,30(12):243-252.
Zhang Bingyi,Jia Yuqi,Feng Guihong.Novel permanent magnet synchronous machines with modules combination stator[J]. Transactions of China Electrotechnical Society,2015,30(12):243-252.
[6] Qiang Tan,Huang Xuzhen,Li Liyi,et al.Research on inductance unbalance and thrust ripple suppression of slot-less tubular permanent magnet synchronous linear motor[J]. IEEE Access,2018,6:51011-51020.
[7] Jian Changjun,Ma Wenli,Fan Yongkun, et al.New methods for arc permanent magnet linear synchronous motor to decrease torque ripple[J]. IEEE Transactions on Magnetics,2012,48(10):2659-2663.
[8] Liu Fei,Hu Jianhui and Li Yong. Torque and radial force optimization of arc flux switching permanent magnet linear motor used for large scanning equipment[J]. IEEE Transactions on Energy Conversion,2022,37(1):304-315.
[9] 蒋钱,卢琴芬,李焱鑫. 双三相永磁直线同步电机的推力波动及抑制[J]. 电工技术学报,2021,36(05):883-892.
Jiang Qian,Lu Qinfen,Li Yanxin.Thrust ripple and depression method of dual three-phase permanent magnet linear synchronous motors[J]. Transactions of China Electrotechnical Society,2021,36(05):883-892.
[10] 郭科宇,李耀华,史黎明. 分段供电双三相永磁同步直线电机电流解耦与扰动抑制[J]. 电工技术学报,2022,37(24):6332-6344.
Guo Keyu,Li Yaohua,Shi Liming.Current decoupling and force disturbance suppression of dual three-phase permanent magnet linear synchronous motors with section power supply[J]. Transactions of China Electrotechnical Society,2022,37(24):6332-6344.
[11] Zhang Jiaxu,Zhang Bingyi,Feng Guihong.Influence of pole and slot combination on torque characteristics and radial force of fractional slot permanent magnet machines[J]. IEEJ Transactions on Electrical and Electronic Engineering, 2021, 16(8): 1055-1066.
[12] Yang Haodong,Chen Yangsheng.Influence of radial force harmonics with low mode number on electromagnetic vibration of PMSM[J]. IEEE Transactions on Energy Conversion,2014,29(1):38-45.
[13] 刘蓉晖,刘锦坤,章君达,等. 基于双曲余切变换的Halbach阵列表贴式永磁电机转子偏心气隙磁场解析模型[J]. 电工技术学报,2023,38(06):1433-1446.
Liu Ronghui,Liu Jinkun,Zhang Junda,et al.Analytical model for air-gap magnetic field in Halbach arrays surface-mounted permanent magnet motor with rotor eccentricity based on hyperbolic cotangent transformation[J]. Transactions of China Electrotechnical Society,2023,38(06):1433-1446.
[14] 李泽星,夏加宽,刘铁法,等. 基于分段交错梯形磁极的分数槽集中绕组永磁电机局部切向力的削弱[J].电工技术学报,2023,38(06):1447-1459+1485.
Li Zexing,Xia Jiakuan,Liu Tiefa,et al. Reduction of local tangential force of fractional-slot concentrated winding permanent magnet synchronous machines with piecewise stagger trapezoidal poles [J]. Transactions of China Electrotechnical Society,2023,38(06):1447-1459+1485.
[15] 黄守道,成双银,罗德荣,等. 盘式对转双转子永磁同步电机的设计和特性分析[J].电工技术学报,2017,32(23):72-80.
Huang Shoudao,Cheng Shuangyin,Luo Derong,et al.Design and characteristic analysis of an axial-flux permanent magnet synchronous motor with contra-rotating rotors[J]. Transactions of China Electrotechnical Society,2017,32(23):72-80.
[16] 巫川,李冠醇,王东. 永磁电动悬浮系统三维解析建模与电磁力优化分析[J]. 电工技术学报,2021,36(05):924-934.
Wu Chuan,Li Guanchun,Wang Dong.3-D analytical modeling and electromagnetic force optimization of permanent magnet electrodynamic suspension system[J]. Transactions of China Electrotechnical Society,2021,36(05):924-934.
[17] Zhu Sa,Lu Jianbo,Zeng Feng.Fast calculation of electromagnetic forces in IPMSMs under PWM VSI supply based on small-signal time-harmonic finite element method[J]. CES Transactions on Electrical Machines and Systems,2022,6(01):67-76.
[18] 历建刚. 永磁体间的磁力和磁力矩研究[D]. 长春: 吉林大学,2015.
Li Jiangang.Research on the force and torque between permanent magnets[D]. Changchun:Jilin University,2015.
[19] 瞿川. 钕铁硼永磁体磁力和磁刚度理论及应用研究[D]. 长春:吉林大学,2022.
Qu Chuan.Study on the theory and application of magnetic force and magnetic stiffness of NdFeB permanent magnets[D]. Changchun:Jilin University,2022.