圆筒型横向磁通永磁直线电动机推力波动分析  

Analysis of Thrust Force Ripple for Tubular Transverse Flux Permanent Magnet Linear Motor

作　　者：赵玫[1] 吴广坤 李春生 张贵德 韩晓涛 

机构地区：[1]鲁东大学,烟台264025 [2]山东核电有限公司,烟台265116 [3]中国石油集团长城钻探有限公司,北京100101

出　　处：《微特电机》2014年第9期20-24,共5页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(51407088);山东省高等学校科技计划项目(J13LB55);鲁东大学校专项经费(LY2013003)

摘　　要：以减小圆筒型横向磁通永磁直线电动机推力波动为主要目标,分别从定位力和波动力两方面展开研究。提出单相三维有限元法与傅里叶变换相结合的方法计算电机的定位力,在保证计算准确度的前提下,有效地缩短了定位力的计算时间。分析定子单元铁心厚度与极距之比对定位力大小的影响,结果表明通过对定子单元铁心厚度与极距之比的合理选取,可有效地降低电机的定位力。针对波动力的抑制,选择合适的定子单元铁心厚度与极距比、永磁体厚度和永磁体周向极弧系数来减小波动力。According to the problem of larger thrust force ripple in transverse flux PMLM,the decrease of cogging force and ripple force was investigated.The influence of different structure parameters on cogging force was calculated by singlephase three three-dimensional finite element analyses and fast Fourier transform,the special attention was paid to the influence of the length of stator segment.The results show that the amplitude of cogging force can be effectively reduced by adopted the ratio of length of stator segment and the pole pitch.The ripple force can be reduced by adopted the ratio of stator core thickness and pole pitch,permanent magnet thickness and pole pitch,permanent magnet circumferential arc coefficient.

关 键 词：横向磁通 永磁电机 直线电动机 定位力 波动力 

分 类 号：TM351[电气工程—电机] TM359.4