摘要
开关上电脉冲广泛存在于采用机械开关作为配电控制的宇航配电系统中。该脉冲尖峰产生时间要早于常规浪涌电流,脉冲峰值比稳态电流高几百倍,上升沿达ns数量级,对配电系统危害巨大。通过剖析开关上电脉冲产生机理,对比了开关上电脉冲与常规浪涌电流的区别,分析了几种开关上电脉冲抑制方法的优劣,最终给出了一种最佳抑制方案。该方案基于预充电原理,在原功率开关支路上并联小开关串电阻支路,巧妙设计驱动时序,在不增加指令和重量等资源前提下,将上电脉冲控制在预期指标之内,解决了常规浪涌电路无法抑制的开关上电脉冲。
Switch power-on pulses are widely found in aerospace power distribution systems which use mechanical switches as power distribution controls. The pulse peak generation time is earlier than that of the conventional surge current, the pulse peak value is hundreds of times higher than that of the steady-state current, and the rising edge reaches an order of nanosecond, which is harmful to the power distribution system. Through the analysis of the switch power-on pulse generation mechanism, the difference between the switch power-on pulse and conventional surge current is compared, and the advantages and disadvantages of several switch power-on pulse suppression methods are analyzed.Finally, an optimal suppression scheme is given. Based on the principle of pre-charging, this scheme connects the small switch series resistance branch in parallel with the original power switch branch, and designs a driving sequence ingeniously. On the premise of not increasing the resources such as instructions and weight, the power-on pulse is controlled within an expected index, which solves the problem that the conventional surge circuit cannot suppress the switch power-on pulses.
作者
王力
吴建超
王杰
刘密
何雄
陈永刚
WANG Li;WU Jianchao;WANG Jie;LIU Mi;HE Xiong;CHEN Yonggang(Beijing Spacecrafts Manufacturing Co.,Ltd,Beijing 100094,China;Beijing Space Power Conversion and Control Engineering Research Center,Beijing 100080,China)
出处
《电源学报》
CSCD
北大核心
2022年第5期60-67,共8页
Journal of Power Supply
关键词
开关
上电脉冲
浪涌电流
浪涌抑制
switching
power-on pulse
surge current
surge suppression
