The full text of this article
Design and machining of Fresnel solar concentrator surfaces
by Y. Cheng; X.D. Zhang; G.X. Zhang
International Journal of Precision Technology (IJPTECH), Vol. 3, No. 4, 2013
Abstract: Fresnel lens is found to simplify the system structure and enhance the performance of photovoltaic systems. The flat and arched shape Fresnel lens surfaces are designed, respectively, based on 2D geometric construction method (GCM) in this paper. The slope facets of Fresnel lens are simplified as points, which control the light accurately. This theory is applied for large aperture optical elements to realise light and thin design. The designed concentrator surfaces are fabricated by ultra-precision turning technology. The performance of Fresnel concentrator is checked by testing the efficiency of solar cell, and the experimental results prove that the proposed design method of Fresnel concentrator surfaces meets the application requirements on photovoltaic system.
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