HSU-SAT1号機の回路設計及び試験結果

抄録

The HSU-SAT1 is a 1U Cubesat, which is scheduled to be launched in 2021 with the mission of orbital demonstration of self-made satellite bus devices, three-axis attitude control by magnetic torquer, and satellite uplink by infrared remote control. The Electric Power Subsystem of the HSU-SAT1, which is designed to stably supply power to each device in the satellite without damage under space environment, consists of solar cell panels, batteries, a charging circuit, a power control circuit, and an inhibit circuit. The five solar panels used in our satellite consist of four panels made of single crystal silicon cells and one panel made of three-junction solar cells. The main battery is a lithium ion battery. According to the electrical interface requirements of the J-SSOD, the satellite must be inactive when the three deployment switches are pressed prior to satellite deployment, and the transmitter in the satellite must not emit radio waves within 30 minutes after satellite deployment. The inhibit circuit is designed to meet these requirements.