动磁式横向磁通直线振荡电机建模分析  

Modeling and analysis of moving-magnet transverse-flux linear oscillatory motor

作　　者：于明湖[1] 张玉秋[1] 卢琴芬[1] 叶云岳[1] 王立强[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电机与控制学报》2011年第2期1-6,共6页Electric Machines and Control

基　　金：高等学校博士学科点专项科研基金资助课题(200803350051);国家自然科学基金(51077115)

摘　　要：针对目前已有动磁式直线振荡电机结构复杂、漏磁较大等问题,提出一种动磁式横向磁通直线振荡电机,其具有动子质量轻,加工难度小,力特性好等优点,适合应用于冰箱压缩机等领域。基于建立的电机等效磁路模型推导出了电磁推力表达式,阐述了该电机电磁推力产生的机理。解析公式显示,电磁力系数与电机结构参数及永磁体材料属性等有关,而与动子位置无关。为验证磁路模型并对于电机进行`进一步分析,建立电机三维有限元模型,分析了气隙磁场特性并研究了永磁体与外定子轴向长度配合对于动子有效行程的影响。实验结果验证了模型的正确性,分析结果为该电机的优化设计提供了依据。Available moving-magnet linear oscillatory motor has many disadvantages such as complex structure and flux leakage.So a novel moving-magnet transverse-flux linear oscillatory motor was presented,this motor has the characteristics of light weight of mover,simple manufacture process,good force characteristics.Based on equivalent magnetic circuit model,the expression of electromagnetic force was established.Formula display that electromagnetic force coefficient has relationship with the motor structure parameters and permanent magnet but not with the position of mover.In order to verify the equivalent magnetic circuit model and analyze the motor,the 3D finite element model was established.Then the magnetic field in air gap was analyzed and the effect of permanent magnet and outside stator＇s axial length on stroke was investigated on the basis of the 3D finite element model.Finally,the characteristics of motor was researched by corresponding experiment.The models was validated by experimental results.All analysis results are benefit to motor＇s optimal design.

关 键 词：横向磁通 动磁式 直线振荡电机 磁路 有限元 

分 类 号：TM359.4[电气工程—电机]