【摘要】 二次放电是造成空间高压大功率太阳阵功率损失的主要原因 .通过地面模拟实验研究 ,确定了二次放电阈值电压并监测了二次放电脉冲电流 ,对高压太阳阵二次放电特性及其击穿机理进行了讨论 .结果表明 ,高压太阳阵工作电压和电池串间电流的提高增加了高压太阳阵发生二次放电事件的可能性 ;通过采用特殊的结构设计和在太阳阵电池串之间涂覆RTV胶 ,可以有效抑制二次放电事件的发生 .更多还原

【Abstract】 The secondary discharge is an important factor for power loss in the high-voltage and high- power solar cell array. This paper studies the characteristics of the secondary discharge and the breakdown mechanism through identifying the voltage threshold where the secondary discharge will probably occur and monitoring the pulse current of the secondary discharge. The results show that increasing the operation voltage and string current will increase the possibility of the occurrence of the secondary discharge on the solar array. The special structure design and the presence of RTV grouting between the solar cell strings can prevent the secondary discharge incidents efficiently.更多还原