An ultralight concentrator photovoltaic system for space solar power harvesting
| Autor: | Eleftherios Gdoutos, Samuel Loke, Pilar Espinet-Gonzalez, Tatiana G. Vinogradova, Emily C. Warmann, Sergio Pellegrino, Harry A. Atwater, Michael D. Kelzenberg, Ali Naqavi, Christophe Leclerc, Nina Vaidya |
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| Rok vydání: | 2020 |
| Předmět: |
Carbon fiber reinforced polymer
020301 aerospace & aeronautics Materials science business.industry Aerospace materials Photovoltaic system Aerospace Engineering 02 engineering and technology Space-based solar power Concentrator 01 natural sciences Optical coating 0203 mechanical engineering 0103 physical sciences Emissivity Optoelectronics business 010303 astronomy & astrophysics Power density |
| Zdroj: | Acta Astronautica. 170:443-451 |
| ISSN: | 0094-5765 |
| DOI: | 10.1016/j.actaastro.2019.12.032 |
| Popis: | We present a detailed design treatment for a concentrating photovoltaic mini module subsystem with a specific power of up to 4.1 kW/kg for integration into a space solar power system. Concentrating designs are required to achieve specific power over 1 kW/kg with current high-efficiency III-V multijunction solar cells. The 15 sun, linear concentration concept detailed here reduces the system mass by replacing cell and radiation shield area with ultralight carbon fiber reinforced polymer (CFRP) optics. Reducing the cell size to 1 mm width as well as careful optimization of cell architecture and CFRP material and thickness are critical for maintaining cell temperatures under 100 C despite the concentration. We also describe ultralight multilayer optical coatings to increase the thermal emissivity of the concentrator surfaces and enhance radiative transfer for cell cooling, which is a critical technological component of the total system design. |
| Databáze: | OpenAIRE |
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