电磁操动机构的电磁缓冲仿真实验研究  

Simulation and experimental research on electromagnetic buffer of electromagnetic actuator

作　　者：郭凤仪[1] 李朋[1] 李斌[1] 王智勇[1] 李春光[1] 王继强[1] 王喜利[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105

出　　处：《电工电能新技术》2010年第3期68-71,80,共5页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金资助项目(50677027);辽宁省优秀人才支持计划项目(2007R22)

摘　　要：为弥补弹簧缓冲的不足,提出一种适用于电磁操动机构合闸过程的电磁缓冲控制思想。在触头合闸运动中对通过缓冲线圈施加反向激磁电流,利用反向电磁力来相对减小合闸吸力,从而降低机械冲击、减少触头弹跳、实现合闸缓冲。采用ANSYS三维矢量分析法,针对不同缓冲电流以及不同缓冲位置时电磁操动机构的合闸吸力特性进行了仿真计算;利用实验装置对不同缓冲控制条件下的触头振动情况进行了实验研究。初步研究表明,缓冲电流的大小以及缓冲电流的施加位置、施加时间对电磁操动机构的吸力特性具有重要影响,只有综合考虑这三种因素、选择合适的控制条件才能得到较为理想的合闸特性和缓冲效果。电磁缓冲控制对于其它操动机构中存在的合闸冲击问题也具有一定的借鉴意义。To compensate the shortcomings of spring buffer method, a kind of electromagnetic buffer control idea used for electromagnetic actuator on the course of closing processes was introduced. Applying a proper reverse exciting current to the buffer coil during the closing movement, a reverse force generated by the reverse Current will decrease the inherent closing suction, therefore, can reduce the mechanical impact and achieve the function of closing buffer. By 3D vector analysis method with ANSYS software, the simulation calculation on closing suction characteristics of electromagnetic actuator under different conditions was carried out. Meanwhile, the contactor vibration curves were observed by a special experimental device. Preliminary studies have shown that the buffer current and its imposing position and imposing time have an important influence on suction characteristics. Only with compre- hensive consideration of these three factors and selection of the appropriate control conditions, it is possible to get more satisfactory closing properties and buffer effects. The electromagnetic buffer control idea has certain significance of reference for other actuators to solve the existing closing impact problem.

关 键 词：电磁缓冲 电磁操动机构 反向激磁 

分 类 号：TM561[电气工程—电器]