DocumentCode :
2616323
Title :
Tsinghua-1 Micro-satellite power system architecture and design
Author :
Zhifei, Wu ; Zheng, You ; Salvignol, Jérôme
Author_Institution :
Space Center, Tsinghua Univ., Beijing, China
Volume :
3
fYear :
2000
fDate :
2000
Firstpage :
1045
Abstract :
Tsinghua-1 Micro-satellite is the first satellite made by Tsinghua University. It was launched in 2000. The power system of Tsinghua-1 Micro-satellite is one of the most important subsystems. It provides all power for satellite platform and payloads from the mission´s beginning to the end. We designed the regulation, protection and distribution of 4×35 W solar array power and the energy of 7 Ah NiCd batteries. This subsystem essentially offers two buses: unregulated 14 V and regulated 5 V. All distributed power lines to the users are protected by current tripping switches. In addition some essential loads, such as the Telecommand System, are supplied through fuses. Tsinghua-1 Microsatellite power system provides an efficient, flexible, reliable and cost-effective solution for small satellites in low Earth orbit. A better maximum power point tracking has been used to increase reliability margins and increase the efficiency of the power system. Undertaking several kinds of test, such as power board test, AIT (assemble integrate test), EMC (electromagnetic compatibility) test and TVT (thermal vacuum test), the power system worked very well
Keywords :
artificial satellites; electromagnetic compatibility; power control; power distribution; secondary cells; solar cell arrays; space vehicle power plants; 14 V; 35 W; 5 V; EMC; Ni-Cd; NiCd batteries; Telecommand System; Tsinghua University; Tsinghua-1 Micro-satellite power system; assemble integrate test; current tripping switches protection; electromagnetic compatibility; fuses; low Earth orbit; maximum power point tracking; power board test; power distribution; power protection; power regulation; reliability margins; solar array power; thermal vacuum test; Batteries; Electromagnetic compatibility; Low earth orbit satellites; Payloads; Power system protection; Power system reliability; Power systems; Satellite broadcasting; Switches; System testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
Type :
conf
DOI :
10.1109/IPEMC.2000.882969
Filename :
882969
Link To Document :
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