永磁并联磁路高速电磁铁的静态特性  

Static Performance of High-Speed Electromagnet with Permanent Magnet Based on Parallel Magnetic Circuit

作　　者：刘鹏[1] 范立云[1] 周伟[1] 马修真[1] 宋恩哲[1] Liu Peng Fan Liyun Zhou Wei Ma Xiuzhen Song Enzhe(College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《内燃机学报》2016年第5期449-455,共7页Transactions of Csice

基　　金：国家自然科学基金资助项目(51379041;51279037;51475100);高技术船舶资助项目(G034813048)

摘　　要：为加快电控燃油系统高速电磁阀的动态响应速度,降低功耗,提高安全可靠性,提出一种永磁并联磁路高速电磁铁.采用有限元方法,建立高速电磁铁的数值仿真模型,并通过试验验证模型的精度.基于模型对普通E型高速电磁铁和永磁并联磁路高速电磁铁的电流-位移-力特性及磁场特性进行对比分析,优化初始铁芯结构,揭示不同永磁体高度对电磁力的作用规律和对磁场特性的影响.结果表明:采用永磁并联磁路结构,电磁力得到较大幅度提升,永磁体高度为0.5、1、1.5和2,mm时,电磁力最小提升率分别为9%,、16.3%,、21.2%,和23.9%,;同时该结构能有效减小驱动电流和减轻铁芯饱和程度,降低损耗.To obtain higher dynamic response speed, lower power consumption, higher safety and reliability of high- speed solenoid valve for the electronic control fuel system, a novel high-speed electromagnet （HEM） with permanent magnet on the basis of parallel magnetic circuit was proposed. Numerical simulation models of HEM were developed on the basis of finite element method. Precisions of models were verified by experiment. The current-displacement- force characteristics of conventional type E HEM and novel HEM were compared and analyzed in details based on the models. Structure of initial iron core was optimized, and effects on electromagnetic force on magnetic field character- istics of the permanent magnet heights were clarified. Results show that using the parallel magnetic circuit structure with permanent magnet, the electromagnetic force is improved significantly, and the smallest upgrade rates of electromagnetic force are 9%, 16.3%, 21.2% and 23.9% at permanent magnet heights of 0.5, 1, 1.5 and 2 mm, respectively. In addition, the drive current can be reduced effectively and the magnetic saturation of iron core can be weakened, and these help to reduce the loss.

关 键 词：柴油机 电控燃油系统 高速电磁铁 永磁体 并联磁路 

分 类 号：TK421.4[动力工程及工程热物理—动力机械及工程]