| Autor: |
Che Cheng Huang, Jia Jing Yeh, Chien Kai Tseng |
| Předmět: |
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| Zdroj: |
Proceedings of the World Congress on Engineering & Computer Science 2013 Volume III; Jul2013, Vol. 1, p1-4, 4p |
| Abstrakt: |
Main functions of the Power Control and Distribution Unit (PCDU) in FORMOSAT-5 satellite are to condition energy from the solar arrays and distribute power for all subsystems on the satellite. One of the modules in the PCDU, named the Bus Filter (BF) module provides a low impedance filter tank which shunted with the bus battery, to reduce the primary bus power line noise. The filter tank is consisted of capacitors in parallel. If a flaw or weak spot in the capacitor's dielectric results in filter tank a short fault, the primary bus voltage will be shorted to ground. The satellite power drops below a specific threshold, undervoltage-lockout (UVLO) protector is enabled to turn off the PCDU. At this moment in time, the satellite loses power supply and leads into the emergency situation (idle mode). Choosing polyester film capacitors with self healing properties can avoid a short condition. In this paper, we will discuss the filter tank design and estimate three fault effects to the satellite power system. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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