期刊
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
卷 57, 期 3, 页码 1672-1684出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAES.2020.3048797
关键词
-
资金
- European Regional Development Fund (European Union) through the INTERREG-SUDOE V-B Program under Project NANOSTAR
The thermal modeling of small satellites is crucial and may differ significantly from larger spacecraft. This article focuses on the modeling of solar panels, taking into account not just irradiance and cell temperature, but also the operating voltage for a coupled thermo-electric problem. The importance of considering the operating voltage in thermal analysis, as shown through the UPMSat-2 mission, is highlighted in this article.
The thermal modeling of small satellites (up to 100 kg) is crucial for predicting and managing their operation, and may present significant differences when compared to the thermal modeling carried out in relation to larger spacecraft. In this article, the modeling of their solar panels is underlined as one of these differences. The efficiency of spacecraft solar panels is affected by three main variables: the sun's irradiance, the cells' temperatures, and the operating voltage. Unlike the most common approach, which only takes into account the first two variables and decouples the thermal problem from the electrical one, the coupled thermo-electric problem of the solar panel efficiency as a whole is considered in this article. Using the UPMSat-2 mission as an example, the importance of considering the operating voltage in the thermal analysis of a mission is proven in the present article (for the prediction of temperature and generated power). A simple but accurate I-V (Current-Voltage) curve model to calculate panel efficiency is proposed for modeling the solar panels performance, this method being easily implemented in ESATAN (c).
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