增强型三线圈电磁斥力机构的运动特性分析  

Analysis of Motion Characteristics of Enhanced Three Coil Electromagnetic Repulsion Mechanism

作　　者：赵智忠[1,2,3] 关孟鑫 陈海 刘阳 ZHAO Zhi-zhong;GUAN Meng-xin;CHEN Hai;LIU Yang(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300401,China;Hebei Key Laboratory of Electromagnetic Eield and Electrical Reliability,Tianjin 300401,China;Hebei International Joint Research Center for Reliability and Intelligence of Modern Electrical Equipment,Tianjin 300401,China)

机构地区：[1]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300401 [2]河北省电磁场与电器可靠性重点实验室,天津300401 [3]河北省现代电工装备可靠性与智能化国际联合研究中心,天津300401

出　　处：《科学技术与工程》2023年第2期596-609,共14页Science Technology and Engineering

基　　金：国家自然科学基金面上项目(52177139);河北省省级科技计划(E2021202186,E2020202086)。

摘　　要：为进一步优化高压直流断路器的刚分速度和始动时间,改善电磁斥力机构(electromagnetic repulsion mechanism,ERM)的运动特性,提出了增加电磁吸力作为驱动力的增强型三线圈电磁斥力机构,采用运动学、瞬态电磁场以及电路理论进行数学模型耦合分析,运用有限元分析软件建立二维模型,求解其运动特性,最后通过仿真试验进行验证。首先,分析了不同参数对其运动特性的影响,其次,分析了合闸线圈介入时刻对其运动特性的影响,最后,对比分析了增强型三线圈模型与双线圈模型的运动特性差异。结果表明:增加电容容值和电容电压可以缩短行程时间,提高刚分速度,且3个线圈中改变运动线圈驱动电路参数的优化效果最佳;适当增加线圈匝数和截面宽度可以增大电磁驱动力,缩短始动时间;从0时刻介入可以最大限度提高机构的运动速度;同参数条件下,三线圈模型可在2 ms内完成25 mm行程,对应的双线圈模型在2 ms内只能完成16 mm行程。In order to further optimize the rigid split speed and starting time of high voltage direct current(HVDC)circuit breaker and improve the motion characteristics of electromagnetic repulsion mechanism(ERM).An enhanced three coil ERM with electromagnetic suction as driving force was proposed.Kinematics,transient electromagnetic field and circuit were used for mathematical model coupling analysis.The two-dimensional model was established by using finite element analysis software solve its motion characteristics.It was verified by simulation test.Firstly,the influence of different parameters on its motion characteristics was analyzed.Secondly,the influence of closing coil intervention time on its motion characteristics was analyzed.Finally,the difference of motion characteristics between enhanced three coil model and double coil model was compared.The results show that travel time can be shortened by increasing the capacitance and voltage,among three coils,optimization effect of changing the driving circuit parameters of the moving coil is the best.The electromagnetic driving force can be increased by appropriately increasing the number of turns and section width of the coil,and shorten the starting time.Intervening from time 0 can maximize the motion speed of the mechanism.Under the same parameters,the three coil model can complete 25 mm stroke in 2 ms,The double coil model can complete 16 mm stroke in 2 ms.

关 键 词：直流断路器 增强型三线圈 运动特性 电磁斥力机构 刚分速度 

分 类 号：TM561.6[电气工程—电器]