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Solar cell life prediction method based on current attenuation

A technology of solar cells and solar cells, applied in the monitoring of photovoltaic systems, photovoltaic power generation, electrical components, etc., can solve problems such as few, no solar cell life prediction, and inability to comprehensively consider solar cells

Inactive Publication Date: 2015-08-19
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

Generally speaking, there are not many studies on the life prediction of solar cells at present, especially the influence of various complex factors on solar cells in space cannot be considered comprehensively, and the attenuation characteristics shown in the actual operation process are not targeted. analysis, there is no complete model to predict the lifetime of solar cells

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  • Solar cell life prediction method based on current attenuation
  • Solar cell life prediction method based on current attenuation
  • Solar cell life prediction method based on current attenuation

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with specific embodiments.

[0051] The present invention is a solar cell life prediction method based on current decay, such as figure 1 The process shown, the specific implementation method is as follows:

[0052] Step 1: Design the experiment and collect the experimental data.

[0053] Through the telemetry of the satellite in orbit, the collected data includes the telemetry data of the solar cells of the satellite in orbit for three years, and the telemetry parameter is the original current.

[0054] Step 2: Analyze the collected relevant data, perform data preprocessing, and select the original output current as the key performance degradation quantity.

[0055] Firstly, all the raw current data obtained are preprocessed. That is, for the missing data, the mean value interpolation method is used to complete it, and for the outlier data, after being eliminated, the mean value interpolation metho...

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Abstract

Provided is a solar cell life prediction method based on current attenuation. The method comprises: performing modeling analysis on current attenuation of solar cells, providing two kinds of mathematics models of linear and power function, and then through the two models, respectively performing prediction on residual life of a solar cell. The method performs analysis and degeneration modeling from a current angle, and observation is easy and calculation is convenient, and results can be obtained through quantitative analysis. The method accurately and visually analyzes variation trend of current, and the variation trend is supported by reliable models, so results are more accurate, persuasive, and are better in adaptability. The method can be widely used in life tests of solar cells. The basic models can be widely used in life prediction of various kinds of solar cell pieces.

Description

technical field [0001] The invention is a solar battery life prediction method based on current attenuation, which belongs to the field of reliability modeling technology and life prediction analysis, and is used for solving the problem of solar battery life prediction. Background technique [0002] Solar cells based on the photoelectric effect can directly convert sunlight energy into electrical energy, and are the most commonly used energy sources for spacecraft such as artificial satellites and space stations. Solar cells are high-performance and long-life space main power sources, widely used in satellites, etc. Different types of solar cells have different photoelectric conversion efficiencies, and can provide enough energy for satellites and other star space missions, so the use of solar cells Life prediction analysis is very important, and it has important research significance for maintaining solar cells and improving their service life. [0003] In most cases, sola...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S50/10
CPCH02S50/00Y02E10/50
Inventor 孙权冯静潘正强孟洁茹刘天宇黄彭奇子程龙
Owner NAT UNIV OF DEFENSE TECH
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