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- 저자 : Boon Ping Ng (검색결과 1 건)
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Rui Huang,Xinquan Zhang,Boon Ping Ng,A. Senthil Kumar,Kui Liu 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.8 No.1
Fresnel-based concentrated photovoltaic (CPV) solar power systems have been proven effective to significantly enhance the photoelectric conversion efficiency, but a standard-size solar plant will require an extremely large amount of polymer radial Fresnel lenses. Roll-to-roll (R2R) manufacturing is a high-throughput technology to mass produce high-quality functional optical polymer fi lm. In this paper, we have firstly studied a complete manufacturing cycle for R2R embossing of radial Fresnel lens polymer fi lm for CPV systems, in terms of polymer lens design, roller mold machining, R2R embossing and optical performance test. Instead of wrapping an electroplated metal sheet onto the roller in conventional R2R process, the lens pattern array is directly machined using a 5-axis ultra-precision machining system to guarantee its surface quality and accuracy. Optical performance evaluation for the manufactured polymer fi lm using a reference solar cell is conducted, and results have shown that radial Fresnel lens on the polymer fi lm can achieve a sunlight concentration ratio 3.9 × times that of linear lenses with a much smaller receiving area. This study has explored the feasibility for R2R embossing of optical polymer fi lm, an industry-applicable and cost-effective technology for mass production of high-quality Fresnel lenses to be used in high-efficiency CPV systems.
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