Design and Simulation of Optical Components for Solar Concentrator
碩士 === 中華大學 === 機械工程學系碩士班 === 99 === Concentrator photovoltaic (CPV) systems use large area optical components to collect direct sunlight and transfer the energy onto small, high-efficiency photovoltaic (PV) cells. CPV systems have potential to reduce the system cost and keep higher conversion e...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/37062553927190824060 |
| Summary: | 碩士 === 中華大學 === 機械工程學系碩士班 === 99 === Concentrator photovoltaic (CPV) systems use large area optical components to collect direct sunlight and transfer the energy onto small, high-efficiency photovoltaic (PV) cells. CPV systems have potential to reduce the system cost and keep higher conversion efficiencies. High concentration systems need incorporate mechanical tracking to maintain alignment with the sun to achieve a higher optical efficiency. It is essential to consider how the misalignment and acceptance angle influence the optical efficiencies and how to improve it.
This research utilizes secondary optical elements such as hollow reflective truncated pyramid, truncated pyramid lens and spherical dome lens, to improve acceptance angle induced problems in Fresnel concentrator solar power system. The results show that the optical efficiency was improved when the open angle of truncated pyramid is very close to the incident convergent lights from the sun. The optical efficiency was significantly enhanced for the CPV system with secondary optical elements. The optical efficiency of over 59 % can be achieved even under 1.1 degree of acceptance angle.
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