The Research Of Fresnel Concentrator For HCPV

Solar energy is clean and pollution-free, sustainable use and the advantages of large reserves, but the current energy crisis as well as traditional energy sources adverse impact on the environment, solar energy because of its superior characteristics of a national race to study and explore the hot-spot. Similarly, solar power exists shortcomings as low flux density, the spatial distribution of intermittent changes are not uniform and uncertainty etc, so it's essential to improve solar power system low efficiency and reduce the cost of application of solar power generation.Solar High Concentrator Photovoltaic(HCPV) is to reduce the cost of electricity generation to improve power generation efficiency is an effective way. Focus on electricity generation in high-power solar concentrator to play a pivotal role. In the papers, condenser the history of Fresnel lens, discusses the application of solar energy Fresnel concentrator, and presence Fresnel condenser was experimentally compared and found shortcomings which buy from market. Paper support according to project requirements, used in high power focused to make focusing solar concentrator solar cells achieve higher efficiency and application of solar cell surface is a square, so it needed to be condenser focal spot for the energy distribution evenly.Paper first studies the Fresnel solar concentrator (Fresnel lens) design method, uniform design is given a brief derivation of the formula obtained Fresnel lens of universal design formula; according to the structure of Fresnel lens characteristics of a Fresnel concentrator optical loss mechanism and impact of solar concentrator optical efficiency factor; using Proe 3D parametric modeling software with Tracepro optics, Fresnel condensing on the surface of different acquisition The beam energy distribution device optical simulation study shows that often exist in the design of the Fresnel lens spot uneven energy distribution, affecting the efficiency of solar concentrators battery power problems; for the problem, the paper proposes the structure through the design and multi-focal lens second optical lens with two focal spot energy distribution to achieve uniformity of approach, and by the optical simulation of the two schemes are the degree of energy and power generation systems compared to the tolerance were compared qualitatively to compare their respective advantages and disadvantages.Condenser system to assess the design and simulation accuracy, thesis condensor optical efficiency testing conducted experimental study, preliminary analysis of the experimental data reveal paper proposed program design is feasible.