The solar array, as the main power source for the satellite, is primarily composed of the substrate and high-efficiency space-grade solar cells. It directly converts space sunlight into electrical energy to power the satellite.
The 30% efficiency space-grade triple-junction solar cell is made of GaInP/GaAs/Ge triple-junction cells, silicon bypass diodes, interconnects, and radiation-resistant glass covers. The crystal performance meets the requirements of GJB 7392-2011 and ECSS-E-ST-20-0BC standards, and has advantages such as high photoelectric conversion efficiency and good radiation resistance.
Dimensions/mm | 80.15 ×40.15 | 30.4 ×40.1 | 60.6 ×40.1 | ||||||||
Area/cm2 | 30.15 | 12 | 24 | ||||||||
Weight | (125 ± 12)mg/cm2 | ||||||||||
Radiation-resistant Glass Cover | KFB 120 | ||||||||||
Open Circuit Voltage | 2720 mV | ||||||||||
Short Circuit Current Density | 17.2 mA/cm2 | ||||||||||
Best Operating Point Voltage | 2430 mV | ||||||||||
Best Operating Point Current Density | 16.6 mA/cm2 | ||||||||||
Conversion Efficiency(1353W/m2) | 30% | ||||||||||
Radiation Degradation (1MeV,1 ×10^15 e/cm2) | lm/lmo=0.92; VmNmo=0.90; Pm/Pmo =0.83 | ||||||||||
Temperature Coefficient | △Vm=-6.5mV/℃;△lm=9.0μA/cm2/℃ | ||||||||||
Absorptance | ≤0.92 | ||||||||||
Emissivity | 0.84±0.03 |