LEO卫星太阳电池阵温度和功率的建模仿真

Modeling and simulation of temperature and power of LEO satellite solar array

太阳电池阵列是LEO(近地轨道)卫星最主要的电力来源,但其光电转化效率受温度的影响。通过分析太阳辐射、地球辐射和地球反射等外热流对太阳电池阵阳极表面(与太阳电池相连的表面)和阴极表面(阳极表面的背面)的影响,并考虑到阳极表面和阴极表面的热传导,建立了太阳电池阵阳极表面和阴极表面的温度模型。进而建立太阳电池的电流模型和电压模型,考虑太阳电池阵的串并联情况建立了发电功率模型,并进行了仿真计算,可以为LEO卫星的供配电系统设计提供参考。

Solar cell array was the main power source of LEO satellite,but its photoelectric conversion efficiency was affected by temperature.By analyzing the influence of external heat flux such as solar radiation,earth radiation and earth reflection on the anode surface(the surface connected with solar cells)and cathode surface(the back of anode surface),and considering the heat conduction between anode surface and cathode surface,the temperature model of anode surface and cathode surface of solar array was established.Then,the current model and voltage model of solar cell were established,and the power generation model was established considering the series parallel connection of solar cell array,and the simulation calculation was carried out,which could provide reference for the design of power supply and distribution system of LEO satellite.