IN ORBIT DEGRADATION OF SCD1 AND SCD2 BRAZILIAN SATELLITES SOLAR PANELS
DOI:
https://doi.org/10.59627/cbens.2012.1835Keywords:
Solar energy, Data collection satellite, solar cellAbstract
The Brazilian Complete Space Mission, established in 1979 by the Brazilian government began with a series of satellites to collect meteorological data. The solar panels of these satellites were manufactured with silicon solar cells and specified to generate up to 76 W of electrical power at the end of life. The correct design of solar panels is of fundamental importance to define the satellite lifetime. During the design stage are carried out analysis of degradation factors that define the decrease of power generation. Several sensors are installed in satellites to measure the parameters associated with energy generation. The values of the photogenerated current, measured at operation point of satellite power bus, is transmitted in real time telemetry and stored by the Satellite Tracking and Control Center of the National Institute for Space Research. This work retrieves the data and makes the necessary treatment in order to study the behavior of electric power generation. Thus, it is confirmed the validation of satellite project by comparisons with true data. This paper presents a brief history of the solar cell used in satellites, the description of the electrical design, the radiation effect, and the degradation analysis of in orbit power generator.
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References
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