Device and method for testing light concentration efficiency of high-parallelism and large-aperture light concentration system

Abstract

The invention discloses a device and a method for testing light concentration efficiency of a high-parallelism and large-aperture light concentration system and belongs to the field of testing of light concentration photovoltaic systems. The testing device comprises a light source (1), an optical filter (2), a reflector (3), a collimator tube (4), a diaphragm (6), and a detector (8); the light source (1) and the optical filter (2) are positioned in the reflector (3); the light source (1), the optical filter (2), the collimator tube (4), the diaphragm (6), and the detector (8) are arranged coaxially and sequentially; and light emit by the light source (1) passes through the optical filter (2) to be changed into quasi monochromatic light, a divergence angle (5) of the quasi monochromatic light is matched with the divergence angle (5) of sunlight by adjusting the collimator tube (4), and light passing through the diaphragm (6) is converged by a light concentration system (7) and then is received by the detector (8). The device can realize the performance test of the high-parallelism light concentration system with the large aperture of 145mm and has a simple structure and low cost.

Description

technical field [0001] The invention belongs to the field of concentrating photovoltaic system testing, and relates to the testing technology of solar photovoltaic concentrating systems, in particular to a photovoltaic concentrating system with high concentration, high energy transfer efficiency, high parallelism, and large diameter based on non-imaging theory. Light efficiency test device and method. Background technique [0002] Solar energy is a renewable clean energy with the largest reserves and the widest energy distribution. Its main application is photovoltaic power generation. Currently, the cost of power generation is too high and has not fully entered the market. The most effective way to reduce the cost of photovoltaic power generation is to use cheap optical concentrating elements to condense a large amount of light onto small concentrating cells, improve the concentrating efficiency, reduce battery materials, and reduce costs. The Fresnel condenser is small in...

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Problems solved by technology

[0004] Aiming at the deficiencies of existing solar simulators in concentrating system testing, the purpose of this invention is to provide a test device and method for the concentrating efficiency of an indoor high-parallel large-aperture concentrating system, which uses a wide-spectrum light source and a narrow-band The filter combination is used as the light source, and the test device of the indoor concentrating system is designed to replace the existing outdoor solar photovoltaic concentrating test system for concentrating experimental measurements, so as to make up for the outdoor solar concentrating caused by weather and environmental changes Inconvenience and instability of experimental measurements

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