双边永磁同步直线电动机磁阻力分析及最小化  

Detent Force Analysis and Reduction of Bilateral PMLSM

作　　者：常九健[1] 马文礼[1] 黄金龙[1] 

机构地区：[1]中国科学院光电技术研究所,四川成都610209

出　　处：《微特电机》2012年第6期1-3,7,共4页Small & Special Electrical Machines

摘　　要：对一种双边永磁同步直线电动机进行二维建模,将电机的磁阻力分解为边端力和齿槽力独立的两部分,采用半无限边端结构建立由边端效应产生的磁阻力分析模型,通过优化初级铁心长度的方法将边端力幅值从原来的28 N降低到10 N;采用周期边界条件的方法,建立齿槽力分析模型,通过改变齿槽槽距,从而提高槽数与永磁体极数的最小公倍数,将齿槽力幅值从原来的4.1 N降低到1.3 N。这些减小力矩波动的措施经过实验样机验证合理可行。A 2-D model for a kind of bilateral PMLSM was built,in which the reluctance force was reduced to the end effect and the slot eftect by using finite element method （FEM） analysis. The end force was decreased from 28 N to 10 N lhrough the method of optimizing the structure of armature. The slot pitch was changed to increase the least common multiple between slot numbers and the permanent magnet pole numbers. The cogging force was decreased from 4.1 N to 1.3 N. Experimental prototype validates that the technique is reasonable and feasible.

关 键 词：双边直线电动机 力矩波动 边端效应 齿槽效应 有限元分析 

分 类 号：TM351[电气工程—电机]