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被动电装甲高功率脉冲电路参数特性分析

DOI: 10.13336/j.1003-6520.hve.2015.06.012, PP. 1857-1864

Keywords: 被动电装甲,脉冲电流,趋肤效应,等效电阻,等效电感,能量原理

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Abstract:

为了获得被动电装甲作用于射流的最佳电流波形,研究了电感、电阻、电容及充电电压对被动电装甲放电电流波形的影响规律。在此基础上,重点研究了装甲结构变化对电感的影响及在脉冲电流作用下射流电感、电阻的变化规律。首先在稳态条件下,利用电感经验计算公式计算,得到了影响装甲结构电感的主要因素为装甲板间距与装甲板宽度的比值;接着本文首次考虑脉冲电流通过铜射流时产生的趋肤效应(电流上升)及反趋肤效应(电流下降)对电阻和电感的影响,基于能量原理,利用计算得到的射流上的电流分布,得出了一种等效电阻电感的计算方法,并对直径4mm的射流进行了计算。结果表明射流的电阻突然增大后又很快趋于稳态电流作用下的电阻值,而电感突然减低后又很快增大至稳态电流作用下电感的1.8%;最后通过测试实验证实了计算方法的正确性。结论认为在能量一定的情况下,增大电压比增大电容更有利于提高脉冲电流的梯度和峰值;在装甲板距离一定的情况下,应尽量增加装甲板宽度以减小装甲板结构的电感;趋肤效应有利于减小整个系统的电感,获得更大的电流梯度。

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