Abstract
This paper presents a proposal of a new configuration of an optical concentrator for photovoltaic application which may enhance the efficiency of solar cells. Bee-eyes array Fresnel lenses concentrator proposed here provide high concentration factor which is greater than1000x at the 20th zone. In addition, the system also provides room for increasing the number of zones to achieve the high concentration factor if needs arise. The transmission efficiency greater than 90% has been achieved with f-number of ≥1.25. Mathematical relations derived to obtain flux distribution at the absorber plane and the transmission efficiency as well as the position of the solar cell were used in the ray tracing simulations for 6, 18, 36, 60, 90, 126, 168, 216, 270, and 330 suns concentration systems. A transmission efficiency is linearly decreasing with the increase in the number of arrays in which the transmission efficiency of 94.42% was recorded at the array of 6 suns and 74.98% at 330 suns.
Highlights
Solar photovoltaic (SPV) technology is one of the most attractive renewable energy options for energy generation due to its advantages over other energy options and the fact that it is very friendly to the environmental conditions, which requires only capital cost and less maintenance cost
Bee-Eyes Array for PV Concentrator. Because of their aspheric shape and thinness, leading them to be free from spherical aberration with very low absorption loss, large aperture Fresnel lenses are used in solar photovoltaic concentrator systems
The problems of producing low conversion efficiency due to irregular illumination of solar irradiance may be addressed by using solar cells that are uniquely designed for a particular optical concentration photovoltaic system
Summary
Solar photovoltaic (SPV) technology is one of the most attractive renewable energy options for energy generation due to its advantages over other energy options and the fact that it is very friendly to the environmental conditions, which requires only capital cost and less maintenance cost It is limited because of its high cost per kilowatts-hour [1]. Another research led by Kusko et al entails simulating a Fresnel lens and binary phase gratings via glass of refractive index (n = 1.5) by the beam propagation method. They compared their result with the theoretical values and found that it was close to theoretical values [11]. It can be used to improve the efficiency of the solar photovoltaic generator
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