Degradation estimation for output power of silicon solar array of low earth orbit satellite

LI Qiang; LI Hui-feng; CAO Ji-hong; LI Jian-feng; DUAN Chong-wen

doi:10.3788/OPE.20172514.0180

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Degradation estimation for output power of silicon solar array of low earth orbit satellite

更新时间：2020-08-13

- Degradation estimation for output power of silicon solar array of low earth orbit satellite
- Optics and Precision Engineering Vol. 25, Issue 12z, Pages: 180-186(2017)
- 作者机构：
  
  1. 宇航动力学国家重点实验室,陕西西安,710043
  2. 西安卫星测控中心,陕西西安,710043
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172514.0180
  CLC： V556.1
- Received：28 August 2017，
  
  Revised：10 October 2017，
  
  Published：31 December 2017
- 稿件说明：
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李强, 李会锋, 曹继宏等. 低轨卫星硅太阳电池阵输出功率衰减估计[J]. 光学精密工程, 2017,25(12z): 180-186

LI Qiang, LI Hui-feng, CAO Ji-hong etc. Degradation estimation for output power of silicon solar array of low earth orbit satellite[J]. Editorial Office of Optics and Precision Engineering, 2017,25(12z): 180-186
李强, 李会锋, 曹继宏等. 低轨卫星硅太阳电池阵输出功率衰减估计[J]. 光学精密工程, 2017,25(12z): 180-186 DOI： 10.3788/OPE.20172514.0180.

LI Qiang, LI Hui-feng, CAO Ji-hong etc. Degradation estimation for output power of silicon solar array of low earth orbit satellite[J]. Editorial Office of Optics and Precision Engineering, 2017,25(12z): 180-186 DOI： 10.3788/OPE.20172514.0180.

摘要

针对长寿命低轨卫星太阳电池阵的输出功率衰减问题，提出了一种衰减估计方法。首先选取降交点地方时在10：00 AM附近的太阳同步轨道卫星的硅太阳电池阵为对象，在分析倾角、光照角与日地距离等卫星轨道参数漂移与太阳电池阵温度变化的基础上，建立太阳电池阵输出电流拟合模型，接着进行光照角与日地距离归一化，进而估计太阳电池阵输出功率衰减，并结合实际在轨数据进行检验。结果表明，在轨道受晒率降低、光照角偏大的条件下，硅太阳电池阵输出功率的年衰减因子约为0.003 1，年衰减率约为0.31%，明显低于晨昏轨道下的衰减情形；预测在轨18年后，输出功率衰减低于6%，可满足长寿命低轨卫星的能源需求。结果应用于在轨卫星长期测控与管理中的遥测诊断辅助、能源估计与预测、器件健康状态评估。

Abstract

Aimed at degradation for output power of solar array for long-lived low earth orbit satellite

silicon solar array for satellite in sun-synchronous orbit near 10:00AM at the time of descending node place was selected as object. On the basis of analyzing satellite orbit parameter drifting for inclination

illumination angle and earth-sun distance etc. and temperature change in solar array

fitting model for output current of solar array was established

and normalization of illumination angle and earth-sun distance was conduced to estimate degradation for output power of solar array and to conduct detection combined with actual in-orbit data. The result shows that under condition of orbital exposure decrease and relatively large illumination angle

annual degradation factor for output power of silicon solar array is approximately -0.003 1

and annual degradation rate is approximately 0.31%

which is obviously lower than degradation under morning and light orbit; it is predicted that degradation for output power will be lower than 6% 18 years later in-orbit

which can meet energy demand of long-lived low earth orbit satellite. Result is applied in telemetry diagnostic aid

energy estimate and prediction

healthy state evaluation of device in long-term measurement and control and management for in-orbit satellite.

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references

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