永磁超环面电机结构参数对齿槽转矩的影响分析

刘欣; 王洪达

doi:10.13433/j.cnki.1003-8728.20200082

永磁超环面电机结构参数对齿槽转矩的影响分析

doi: 10.13433/j.cnki.1003-8728.20200082

刘欣,
王洪达

天津工业大学机械工程学院，天津市现代机电装备技术重点实验室，天津　300387

基金项目: 国家自然科学基金项目（51875408）与国家留学基金（CSC No.201808120031）

详细信息

作者简介:
刘欣（1981−），副教授，博士生导师，研究方向为机电传动特性与控制研究，liuxin@tiangong.edu.cn

中图分类号: TM351
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- 被引次数: 0
出版历程
- 收稿日期: 2019-10-09
- 网络出版日期: 2021-04-16
- 刊出日期: 2021-04-16

Analyzing Influence of Structural Parameters of Permanent Magnet Toroidal Motoron Cogging Torque

Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology, College of Mechanical Engineering, Tianjin Polytechnical University, Tianjin 300387, China

摘要

摘要: 为了分析永磁超环面电机结构参数对齿槽转矩的影响，在分析该电机齿槽转矩产生机理的基础上，针对该电机空间螺旋变截面的结构特点，将齿槽转矩的产生分为自转和公转两个分量进行分析；运用磁共能法推导了该电机齿槽转矩与输出转矩的数学表达式，并采用有限元仿真验证了数学模型的有效可行性；分析了该电机重要结构参数对齿槽转矩削弱的同时对输出转矩幅值的影响规律。结果表明，内定子槽开口系数、行星轮齿的极弧系数和气隙值的合理选择，能够在削弱齿槽转矩波动的同时提高输出转矩的幅值，有效地提高永磁超环面电机的输出性能。
- 超环面电机 /
- 螺旋变截面 /
- 齿槽转矩 /
- 磁共能法
Abstract: In order to reduce the cogging torque by optimizing its structural parameters, its cogging torque generation mechanism is discussed. According to the structural characteristics of the variable cross-sectionmotor, the cogging torquegeneration is divided into two directions: rotation and revolution. Mathematical models of cogging torque and output torque of the motor are established with the magnetic common energy method, and the finite element simulation is carried out to verify their validity and feasibility. Based on the mathematical models, the influence of structural parameters of the motor on the cogging torque reduction and the output torque amplitude is analyzed. The results show that the reasonable selection of the slot opening coefficient, polar arc coefficient and air gap value of the inner stator slot of the motor can reduce the slot torque fluctuation and increase the output torque amplitude, and effectively improve the output performance of the permanent magnet toroidal motor
- toroidal motor /
- helical variable cross section /
- cogging torque /
- magnetic common energy method

HTML全文

图 1 永磁超环面电机结构

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图 2 啮合内气隙结构

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图 3 绕组槽结构

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图 4 剩磁沿圆周方向上的分布

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图 5 单个行星轮齿啮合受力图

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图 6 电机有限元仿真模型

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图 7 齿槽转矩的有限元仿真与解析计算对比图

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图 8 不同结构系数对齿槽转矩的影响

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图 9 不同结构参数对齿槽转矩的影响

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图 10 不同结构参数对输出转矩的影响

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表 1 电机的主要结构参数

参数名称	数值	参数名称	数值
中心距a/mm	120	内定子齿宽角φ/(°)	36
永磁体厚度t/mm	12	外定子齿宽角φ'/(°)	12
行星轮厚度h/mm	10	永磁体剩磁B_r/T	1.25
气隙δ_m/mm	1	永磁体相对磁导率μ_r	1.05
内定子包角α₀/(°)	105	行星轮齿数z₂	8
外定子包角α'₀/(°)	115	外定子齿数z₃	28

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参考文献(20)

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