Ray-trace analysis of the low-CR concentrator shows that its optical performance is quite forgiving of moderate pointing error. Ray-tracing also identifies the upper reflector corners as the source of reflector heating. Making these zones nonspecular could produce lower, more uniform reflector temperatures with a small sacrifice in optical efficiency. A coupled thermal-electrical analysis of a typical concentrator element within the large array shows that nonuniform illumination need not produce significant mismatch losses provided that solar cells are connected in parallel groups across the half-panels. In general, the ground test results of a prototype concentrator conform with theoretical predictions which take into account known environmental and design factors. The predicted insensitivity to pointing angle is confirmed.
Optical, thermal, and electrical performance of low-CR solar arrays
Optische, thermische und elektrische Eigenschaften einer Sonnenzellenanlage mit niedriger Lichtkonzentrierung
1983
6 Seiten, 9 Bilder, 1 Tabelle, 7 Quellen
Aufsatz (Konferenz)
Englisch
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