|本期目录/Table of Contents|

[1]丁 强,邓智泉,王晓琳.无轴承交替极永磁电机磁极形状优化设计[J].电机与控制学报,2017,21(01):69-76.[doi:TM 343]
 DING Qiang,DENGZhi-quan,WANG Xiao-lin.Magnet shape optimization for bearingless consequent-pole PM motor[J].,2017,21(01):69-76.[doi:TM 343]
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年01
页码:
69-76
栏目:
出版日期:
2017-01-01

文章信息/Info

Title:
Magnet shape optimization for bearingless consequent-pole PM motor
作者:
丁 强邓智泉王晓琳
(1.南京航空航天大学自动化学院,江苏南京210016; 2.南京工 业职业技术学院能源与电气工 程学院,江苏南京210023)
Author(s):
DING Qiang12 DENGZhi-quan1 WANG Xiao-lin1
(1. College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China; 2. School of Energy and Electrical Engineering,Nanjing Institute of Industry Technology,Nanging 210023,China)
关键词:
无轴承电机交替极绕组函数磁极形状电磁特性
Keywords:
bearingless motor consequent-pole winding structure space harmonicsuspension performance
分类号:
10.15938/j. emc.2017.01.010
DOI:
TM 343
文献标志码:
A
摘要:
为了优化无轴承交替极永磁电机性能,从转子结构入手分析交替极转子结构及绕组形式对空载反电势、齿槽转矩等空载特性的影响,提出一种转子磁极离心的磁极形状优化设计方法。通过对比磁极优化前后空载和负载性能发现磁极形状优化对抑制反电势谐波、减小齿槽转、降低转矩脉动等具有积极意义,但同时也导致平均转矩和平均悬浮力的损失。为弥补平均转矩和悬浮力损失,提出采用适当增加转子外径、减小气隙长度的设计方法。最后利用有限元分析对比结构优化前后的基本电磁特性,电机转矩常数由 0 . 1 55 N ? m/A 升至 0 . 1 8 1 N ? m/A ,转矩脉动由 3 0 . 4 % 降为 1 2 . 1 % ; 额定悬浮力由 1 4 . 6 N 升至 2 3 N ,悬浮力脉动由 8 % 降为 7 . 8 % ,最大径向耦合由 7 %升 至 7.7%。
Abstract:
To improve performance of bearingless consequent-jDole permanent magnet motors,by analyzing the influence of consequent-pole rotor and winding configuration on no-load back-EMF and cogging torque,a centrifugal magnet pole shape optimization method was proposed. The optimization method can increase sinusoidal degree of back-EMF,lower cogging torque and suppress torque ripple when comparing no-load and on-load performance before and after shape optimization. However, it can simultaneously lead to losses of average torque and average suspension force. To overcome these disadvantages, one method was presented by increasing rotor outer diameter and decreasing air-gap length. Finally,finite el­ement analysis was carried out for verification of effectiveness for the proposed method. The results show that the torque constant increases from0. 155 N ? m/A to 0. 181 N ? m/A,the peak-to-peak torque ripple decreases from 30. 4% to 12. 1 %. Additionally,rated suspension force increases from 14.6 N to 23 N,the peak-to-peak suspension force ripple decreases from 8% to 7. 8 % and maximum radial coupling increases from 7% to 7. 7 %.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015 -03 -15
基金项目:国家自然科学基金(50977043)
作者简介:丁强(1981—),男,博士研究生,研究方向为无轴承永磁电机及其控制技术;
邓智泉(1969—),男,教授,博士生导师,研究方向为无轴承电机、高速电机及其控制技术;
王晓琳(1976—),男,教授,博士生导师,研究方向为无轴承电机、高速电机及其控制技术。
更新日期/Last Update: 2017-03-28