Bench model design of the electrical power system for Iinusat-1 NanoSatellite

Satellite consists of some subsystems. One of the most important subsystems is electrical power system (EPS). EPS is a part of satellite. It is has a main task i.e. generating, saving, and distributing the electrical power as long as the satellite mission be held. The power budget for Iinusat-1 nano-satellite is estimated 25 - 30 Watts. To support this requirement, GaAs triple junction solar panels with efficiency as 25.1% was chosen. It could be generate the electrical power up to 33.3 watt. Meanwhile, lithium-polymer batteries with 60-Watts capacity will save the solar energy in the electrical power. To distribute the electrical energy, the solid-state switches are used. All voltages, currents, and temperatures will be measured using analog and digital conversion (ADC). The data from adc are collected and organized into one packet data and then sent to the main computer (OBDH) of the satellite. OBDH will send it to the ground station via TTC. We use the Atxmega128A1 to control the solid state switch, collecting data from the sensor, and to control data communication with OBDH.