动磁式横向磁通直线振荡电机设计  

Design 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] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2012年第2期206-211,共6页Journal of Zhejiang University：Engineering Science

基　　金：教育部博士点基金资助项目(200803350051);国家自然科学基金资助项目(51077115);浙江省自然科学基金资助项目(R1110033)

摘　　要：为了实现具有高可靠性的短行程高频往复运动,提出一种动磁式横向磁通直线振荡电机.该电机由单相电源驱动,铁芯叠装方式与普通旋转电机相同,具有结构简单紧凑,动子质量轻,加工难度小,力特性好等优点,适合用于人工心脏、泵、压缩机等领域.针对该电机运行特点,建立电机等效数学模型,推导电磁推力的计算公式与系统的谐振频率,采用三维有限元模型确定电机内外定子和永磁体的设计依据,提出测试方法,并测得样机的静态电磁推力与谐振频率特性.结果表明,电机在等效机械谐振点运行时获得较高的效率且推力与绕组电流成正比.A novel moving-magnet transverse flux linear oscillatory motor was presented to achieve the high stability for the short reciprocating movement.This motor driven by single-phase power source has easily stacked stator iron similar to rotary motor and the characteristics of compact configuration,light weight of mover,simple manufacture process and high thrust force.It is suitable to be applied in artificial heart,compressor and pump.Based on erected equivalent mathematical model according to the operation principle,the formulas of electromagnetic thrust force and system harmonic frequency were deduced.The design criterions of outer stator,inner stator and permanent magnet were determined by 3D finite element model.By the proposed test method,the static thrust force and harmonic system frequency of prototype were measured.It is shown the motor can achieve high efficiency at the resonant frequency and the thrust force is proportional to current.

关 键 词：直驱压缩机 动磁式 直线振荡电机 谐振频率 

分 类 号：TM359.4[电气工程—电机]