Novel LED solar simulator spectrum matching scheme

A solar simulator and spectral matching technology, which is applied in spectrometry/spectrophotometry/monochromator, instrument, photovoltaic module, etc., can solve the problem of xenon lamp solar simulator with large volume, high energy consumption, and inability to apply test and Production and other issues

Inactive Publication Date: 2015-03-25
JIANGNAN UNIV
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Problems solved by technology

However, its shortcomings also restrict its versatility. The xenon lamp solar simulator has large volume, high cost and high energy consumption.
This makes it impossible to apply it to the test and production of photovoltaic small and micro battery components
In the application of large components, the xenon lamp simulator consumes more power

Method used

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Examples

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Effect test

Embodiment Construction

[0011] According to the irradiance value ratio of 1:1.08 in the 400nm-500nm and 500nm-600nm bands, select a suitable high color rendering index white LED. Use the spectral analysis system to measure the spectral graphs of high color rendering index white LED, 660nm LED, 730nm LED, 850nm LED, and 940nm LED light sources under the rated working current, and save the spectral data. According to the standard irradiance distribution in the effective area, the standard total irradiance value in the 400nm-500nm band and the actual total irradiance value of a single white light in this band are calculated to calculate the number of white LEDs required. For the 600nm-700nm band, the white light LED and the 660nm LED are used for joint matching. The white light spectrum is distributed in the 400nm-700nm range. The number of white light LEDs is obtained through the previous 400nm-600nm spectrum matching, and the total number of white light LEDs in the 600nm-700nm band is calculated. The ...

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Abstract

The invention provides a scheme for matching solar spectrum under an AM1.5 condition through utilizing high-power LEDs of different peak wavelengths. According to the scheme of the invention, five kinds of high-power and high-color rendering index white-light LED, 660nm LED, 730nm LED, 850nm LED and 940nm LED light sources are adopted as sub light sources of a solar simulator; distribution of emergent light of which the irradiation distribution in each band satisfies the AM1.5 condition can be obtained through matching according to performance requirements of national standards for the solar simulator in the photovoltaic industry; computing processing is performed on spectrum data of the high-color rendering index white-light LEDs in Matlab according to bands through utilizing a spline interpolation method, and the quantities of radiation in corresponding bands are computed, and the quantities of radiation of long bands are compensated through utilizing the 660nm LEDs, 730nm LEDs, 850nm LEDs and 940nm LEDs; standard irradiation values in each band are compared with an actual irradiation value of a single LED in a corresponding band; and the LEDs are driven by different current, so that accurate matching of a spectrum can be realized.

Description

technical field [0001] The invention belongs to the technical field of illumination and relates to a technical method for matching sunlight with an artificial light source. Background technique [0002] Solar simulation is a technology that uses artificial light sources to simulate the characteristics of solar radiation. Small and medium-sized solar simulators used in the photovoltaic industry are indispensable equipment for detection and calibration in the photovoltaic industry. The light source of early solar simulators is mainly carbon arc lamp, which has the advantage that its spectral distribution is the closest to the solar spectrum, but the disadvantage is that the electrode materials are easy to wear and tear, and it is easy to cause sputtering pollution and affect the optical performance of the specimen. Most solar simulators currently used for photovoltaic detection and calibration use xenon lamps as light sources, which have the advantages of stable working condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/10H02S50/15
CPCY02E10/50
Inventor 孙健刚李果华
Owner JIANGNAN UNIV
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