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| Power Leakage Test of Solar Cell Array in Plasma Environment |
| Received:September 28, 2019 Revised:November 07, 2019 |
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| DOI：10.7643/issn.1672-9242.2020.03.005 |
| KeyWord:solar cell array plasma power leakage snapover |
| Author | Institution |
| WANG Jian |
Beijing Institute of Spacecraft Environment Engineering, Beijing , China |
| WANG Zhi-hao |
Beijing Institute of Spacecraft Environment Engineering, Beijing , China |
| LIU Ye-nan |
Beijing Institute of Spacecraft Environment Engineering, Beijing , China |
| FENG Wei-quan |
Beijing Institute of Spacecraft Environment Engineering, Beijing , China |
| XU Yan-lin |
Beijing Institute of Spacecraft Environment Engineering, Beijing , China |
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| Abstract: |
| The work aims to determine the power leakage characteristic parameters of solar cells in space plasma environment. The collected current of solar cell array changing with bias voltage was measured in ground simulated plasma environment, and then the power leakage value of solar cell array in the space environment was estimated according to the calculation model. The collected current of solar cells increased with the increase of bias voltage, and the snapover occurred after reaching certain threshold. The measured current was more than 100 mA and the power leakage percentage was more than 14.3%. With glow discharge accompanied by the snapover, the plasma sheath expanded from the conductor part of solar cells to the dielectric part. When the snapover was over, the dark characteristics of solar cells were measured. No obvious damage was found. For the future high-voltage and high-power solar cell array, the power leakage test should be done to test its power leakage characteristics. It is suggested that comprehensive consideration of various factors should be taken to avoid the risk of snapover. |
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