电磁斥力机构效率优化  

Efficiency Optimization of Electromagnetic Repulsion Mechanism

作　　者：何莹辉 陈立学[1,2] 李颖卓 徐晟钦 邹昕阳 孙立康 HE Yinghui;CHEN Lixue;LI Yingzhuo;XU Shengqin;ZOU Xinyang;SUN Likang(State Key Laboratory of Advanced Electromagnetic Technology,Huazhong University of Science and Technology,Wuhan 430074,China;Key Laboratory of Pulsed Power Technology Ministry of Education,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]强电磁技术全国重点实验室(华中科技大学),武汉430074 [2]脉冲功率技术教育部重点实验室(华中科技大学电气与电子工程学院),武汉430074

出　　处：《高电压技术》2025年第4期1934-1943,共10页High Voltage Engineering

基　　金：国家重点研发计划(2022YFB2403600)。

摘　　要：电磁斥力机构(electromagnetic repulsion mechanism,EMRM)是实现断路器快速开断的重要设备,受限于涡流斥力的驱动原理,机构效率较低。为此结合频域分析,提出了一种频域参数解析计算的电磁斥力机构效率优化方法。首先,建立了机构有限元仿真模型,对比分析了斥力盘固定、运动情况下的电流与电磁力,发现运动过程互感变化对电流、电磁力影响小,解析分析中互感可简化为常数。然后,比较了不同方法计算等效参数用于解析分析的准确性,fω频域参数可较好解析电流。进一步分析了频率、线圈结构对互感梯度的影响,提出互感梯度可简化为线性减小的结论,获取了电磁力解析式。最后,在频域参数解析计算基础上提出了电磁斥力机构效率优化方法,对该研究斥力机构参数进行了优化,并通过有限元仿真计算验证了优化方法的有效性。The electromagnetic repulsion mechanism(EMRM)is an important device to realize the rapid breaking of circuit breakers.Due to the driving principle of eddy current repulsion,the efficiency of the mechanism is low.In this paper,an efficiency optimization method of electromagnetic repulsive force mechanism based on the analysis of frequency domain parameters is proposed.Firstly,the finite element simulation model of the mechanism is established,and the current and electromagnetic force are compared and analyzed when the repulsive disk is fixed and moves.It is found that the mutual inductance changes during the motion process have a negligible influence on the current and electromagnetic force,and the mutual inductance can be simplified to a constant in the analytical analysis.Then,the accuracy of equivalent parameters calculated by different methods for analytical analysis is compared.Moreover,fωfrequency domain parameters can be used to analyze current better.The influence of frequency and coil structure on mutual inductance gradient is further analyzed.The conclusion that mutual inductance gradient can be simplified as linear reduction is put forward,and the analytical formula of electromagnetic force is obtained.Finally,the efficiency optimization method of the electromagnetic repulsion mechanism is proposed on the basis of the analytic calculation of the parameters in the frequency domain,and the parameters of the repulsion mechanism are optimized in this paper.

关 键 词：断路器 电磁斥力机构 频域参数 解析计算 效率优化 

分 类 号：TM561[电气工程—电器]