中国电机工程学报2016，Vol.36Issue(21)：5930-5938,9.DOI:10.13334/j.0258-8013.pcsee.152605
基于磁动势星形图的无轴承永磁电机悬浮绕组结构优化设计
Optimization Design Methods of Concentrated Levitation Winding Structures in Bearingless Permanent Magnet Motors Based on the Magnetic Motive Force Star Graph
摘要
Abstract
In consideration of undesirable interaction between radial degrees of freedom and great levitation force ripples in a bearingless consequent-pole permanent magnet motor with conventional concentrated levitation winding structures, the magnetic motive force (MMF) star graphs of three type winding structures were presented. To suppress the levitation MMF harmonic components and to increase the levitation MMF fundamental component, a novel and graphical optimization design method for levitation winding structures was proposed for the first time, which was based on MMF star graphs. And an improved three-phase concentrated levitation winding structure with sub-coils can be obtained by properly superimposing first type and second type to improve the levitation performance. It is noteworthy that the proposed optimization method is applicable to concentrate winding design in bearingless permanent magnet motors with cogging effects. Based on the above improved winding structure, the levitation MMF expression is used for optimizing the winding factor from the perspective of single-phase and three-phase. Then the comparison and intrinsic link of the two perspectives were analyzed. Finally, levitation performance comparisons between before and after optimization were carried out by theoretical and finite element analysis, respectively. The results show that the levitation force ripple is reduced from 21.81% to 0.99% and radial coupling from 26.03% to 4.66%, which verify the effectiveness of the novel optimization design method based on MMF star graphs.关键词
磁动势星形图/齿槽效应/集中式绕组结构/优化设计方法/辅助绕组/悬浮磁动势解析Key words
magnetic motive force star graphs/cogging effects/concentrated winding structures/optimization design method/sub-coils/levitation magnetic motive force expressions分类
信息技术与安全科学引用本文复制引用
武谷雨,丁强,王晓琳,邓智泉..基于磁动势星形图的无轴承永磁电机悬浮绕组结构优化设计[J].中国电机工程学报,2016,36(21):5930-5938,9.基金项目
江苏省普通高校研究生科研创新计划项目(SJLX15_0114)；中央高校基本科研业务费专项资金资助。Project Supported by Funding of Jiangsu Innovation Program for Graduate Education (SJLX15_0114) （SJLX15_0114）
The Fundamental Research Funds for the Central Universities （）
