The GaAs solar cell of satellite relies on the space power products. Its conversion efficiency is about 30%, the thickness of the solar panel is less than 1 mm, and it has good high energy density and special environmental resistance, strong radiation resistance.
The satellite in tilted geosynchronous orbit (IGSO) was successfully launched and operated stably and reliably in orbit. The satellite energy system uses triple junction GaAs solar array as the primary power supply to provide energy for the whole satellite during illumination. This is the first application of triple junction GaAs high efficiency gaas solar cell in navigation engineering. The output power of the gaas solar cell gradually decreases with the time of the gaas solar cell in orbit due to the influence of space radiation effect.Based on the statistics of in orbit telemetry data of isgo satellite, the in orbit characteristics of three junction GaAs solar array used in high orbit satellite are analyzed from the output current and temperature of solar array. The on orbit characteristics of triple junction GaAs battery array can provide an important reference for the energy design of subsequent networking satellites.
Satellites need triple junction gaas solar cells to generate electricity. So far, no other commercial solar technology has matched the cost, weight, and ease of use gains of other components of small satellite technology. Multi junction GaAs solar cells are flexible, easy to package and install, and have high conversion efficiency，GaAs material was found to have photovoltaic effect as early as 1954. In the 1970s, with the participation of IBM and other companies and research units, GaAs began to flourish as a cpv solar cell.It includes coiled carbon fiber hangers, flat packaging, polymer based folded arrays, and even inflatable structures, etc., and maximizes Aerospace solar power generation through innovative design methods. Gallium arsenide technology enhances the autonomy of equipment, and its battery provides new possibilities for small satellites in terms of mechanical and design flexibility.