1,000 W/kg Solar Concentrator Arrays for Far-Term Space Missions

Details 1,000 W/kg Solar Concentrator Arrays for Far-Term Space Missions 1,000 W/kg Solar Concentrator Arrays for Far-Term Space Missions

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..699..875o&link_type=abstract

SPACE TECHNOLOGY AND APPLICATIONS INTERNAT.FORUM-STAIF 2004: Conf.on Thermophys.in Microgravity; Commercial/Civil Next Gen.Space

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Applications

Spaceborne And Space Research Instruments, Apparatus, And Components, Solar Collectors And Concentrators, Photoelectric Conversion: Solar Cells And Arrays

Scientific paper

The state of the art for currently flying space solar photovoltaic arrays is represented by the following key metrics: Areal Power: < 300 W/m2, Specific Power: < 60 W/kg and Operating Voltage: < 200 V. To enable the most ambitious and challenging space missions 10-20 years in the future, each of these performance metrics must be improved dramatically. Only one future solar array technology has the potential to simultaneously extend all of these performance metrics: ultra-light refractive concentrator array technology. Under NASA funding, our team has recently developed a near-term rigid-panel concentrator array with the following excellent metrics: Areal Power: > 300 W/m2, Specific Power: > 180 W/kg, and Operating Voltage: > 500 V. More recently, under NASA and NSF funding, our team has been investigating longer term versions of the same basic technology, and has identified a path to the following revolutionary metrics: Areal Power: > 600 W/m2, Specific Power: > 1,000 W/kg, Operating Voltage: > 1,000 V. In addition to these breakthrough performance metrics, the cost ($/W) of the far-term ultra-light concentrator will be much lower than for competing approaches, the stowed power at launch will be unprecedented at more than 100 kW/m3, and the array capacity will be extended from the current limit of about 30 kW to 100 kW and, eventually, to multi-MW systems. The paper describes the ultra-light concentrator technology, including the developmental road map to achieve the mission-enabling far-term performance metrics summarized above.

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