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空间太阳电池阵静电放电数值模拟研究
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摘要
空间太阳电池阵静电放电引起的新失效模式会对太阳电池阵带来不良影响。根据等效电路原理建立空间太阳电池阵静电放电模型,通过改变不同元件参数模拟不同情况下空间太阳电池阵静电放电的情况,得到空间太阳电池阵一次放电和二次放电的脉冲电流波形。在空间太阳电池阵一次放电通路中,当电路中电阻值一定时,随着电感的增大,电流脉冲幅值逐渐减小,振荡逐渐增多,脉宽逐渐增大。当电路中电感值一定时,随着电阻的增大,电流脉冲幅值逐渐减小,振荡变化幅度不大,脉宽逐渐减小。在空间太阳电池阵二次放电过程中,电阻值一定时,随着电路中电感的增大,电流脉冲幅值变化不大,振荡逐渐增多,脉宽逐渐增大。研究结果可对空间太阳电池阵安全防护提供一定的理论依据。
Space solar cell array’s new failure caused by electrostatic discharge can bring bad infl uence to the solar cell array.Space solar cell array electrostatic discharge model is set up according to the principle of equivalent circuit,by changing the parameters of different element to simulate space solar cell array’s electrostatic discharge under different conditions,to get the space solar cell array the first discharge and the secondary discharge pulse current waveform.In space solar array’s primary discharge path,when the resistance in the circuit is constant,with the increase of inductance,current pulse amplitude decreases,oscillation increases gradually,pulse width increases gradually.When inductance in the circuit is constant,with the increase of resistance,current pulse amplitude decreases,oscillation amplitude change is not big,pulse width decreases.In space solar array’s secondary discharge path,when the resistance in the circuit is constant,with the increase of inductance in the circuit,the electric current pulse amplitude change is not big,oscillation increases gradually,pulse width increases gradually.The results of the study of space solar array provide certain theoretical basis for safety protection.
引文
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