Application of Microstructure-Based Optical Designto Solar Concentrator
| Autor: | Shu-Ping Dong, 董書屏 |
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| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 For a solar concentrator system, by increasing the area of low radiation flux such as light, and the electromagnetic wave can significantly magnify the output to a small region of high radiation flux. Therefore, designing a transfer system with high efficiency is the key to promote the utilization of solar energy. Since typically the maximum current-voltage fill factor can not be delivered to illuminate the classical poly-crystal silicon and single-crystal solar cell by one sun. This thesis mainly focused on designing good commercial characteristics, such as cheapness, lightness and thinness, of the non-imaging micro-optic lens. Comparison and optimization between different designs and different optical system software were used to increase solar cell current-voltage fill factor in this work. iii In the first part of this work, the author introduced the physical principles of solar cells, and then compared different characteristics of optical absorbability by pspice simulation software. Then the major lenses (a plane Fresnel lens, a curved Fresnel lens and a reflection-refractive complex lens) and the second lenses (a complex parabolic concentrator and a v-grooved concentrator) were simulated to the optimizations and mold design requirements. The resultant maximum acceptable angle was 7°and the concentration ratio was 30. The relation between the maximum power and the absorbable wavelength region of the solar cell was discussed. Shading effect of adjacent micro-structured lens was one of the important considerations. Finally, an assembled solar auto-tracer system was built, which could avoid a decrease of solar radiation of concentration rate on a titled plane. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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