直动式电磁机构电磁吸力与线圈安匝数关系研究  

Research on Relation Between Electromagnetic Force and Coil Ampere Turns of Direct-Acting Electromagnetic Mechanism

作　　者：梁慧敏[1] 朱旭晴 张坤[1] 由佳欣[1] 谢沅皓 LIANG Huimin;ZHU Xuqing;ZHANG Kun;YOU Jiaxin;XIE Yuanhao(Institute of Electrical and Electronic Reliability,Harbin Institute of Technology,Harbin 150001,China;Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]哈尔滨工业大学电器与电子可靠性研究所,黑龙江哈尔滨150001 [2]桂林电子科技大学,广西桂林541004

出　　处：《电器与能效管理技术》2021年第1期22-28,35,共8页Electrical & Energy Management Technology

摘　　要：从等效工作气隙个数、永磁磁势与线圈磁势的串并联关系角度对众多直动式电磁机构进行分类;基于等效磁路建立工作气隙磁通与动铁心所受电磁吸力计算模型,分析各类电磁机构吸力特性曲线特点,以及动铁心在释放位置处工作气隙磁通、初始电磁吸力与线圈安匝数关系;并建立含永磁直动式电磁机构对应初始电磁吸力最大值的线圈临界安匝数计算模型。研究结论对具有大输出力要求的直动式电磁机构可靠性设计具有一定的指导作用。This article classifies many direct-acting electromagnetic mechanisms from the perspective of the number of equivalent working gaps and the series-parallel relation between the permanent magnet magnetic potential and the coil magnetic potential.Based on the equivalent magnetic circuit,the calculation models of the working gap magnetic flux and the electromagnetic force that works on the moving iron core are established.Then,this paper analyzes the characteristics of the electromagnetic force curves of various electromagnetic mechanisms and the relations between the coil ampere-turns and the working gap magnetic flux,the initial electromagnetic force when the moving iron core is at the release position.On this basis,a calculation model of the critical coil ampere-turns corresponding to the maximum initial electromagnetic force of the direct-acting electromagnetic mechanism with permanent magnet is built.The research conclusions have certain guiding effect on the reliability design of the direct-acting electromagnetic mechanism with large output force requirements.

关 键 词：电磁机构 电磁吸力 线圈安匝数 磁路 

分 类 号：TM273[一般工业技术—材料科学与工程]