Method and device for predicting output power attenuation of solar cell array

A solar cell array, solar cell array technology, applied in the computer field, can solve the problem of not being able to predict the output power attenuation of the solar cell array in real time

Active Publication Date: 2017-02-01
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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Problems solved by technology

[0003] In view of the above analysis, the present invention aims to provide a method and device for predicting the output power attenuation of solar cell arrays to solve the problem that the output power attenuation of solar cell arrays cannot be predicted in real time in the prior art

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  • Method and device for predicting output power attenuation of solar cell array
  • Method and device for predicting output power attenuation of solar cell array

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Embodiment 1

[0039] The invention designs a prediction method for the attenuation of the output power of the solar cell array. It is mainly used in the prediction of the output power of geosynchronous satellite solar arrays, see figure 1 and 2 , the method is divided into two parts: the particle filter method and the solar array output power prediction method.

[0040] The present invention first establishes a simulation model of the output power of the solar cell array according to the main influencing factors of the solar cell array: sunlight intensity, incident angle, and attenuation, and uses the unknown parameters in the model and the real-time prediction results of the output power as particle The state equation is filtered, and the real-time observation value of the output power is used as the observation equation; and the satellite observation value is preprocessed to calculate the average value of the actual output power of the solar cell array within a day; then, the weight of t...

Embodiment 2

[0074] An embodiment of the present invention provides a device for predicting output power attenuation of a solar cell array, see Figure 4 , the predictor consists of:

[0075] The calculation unit is used to calculate the solar light intensity coefficient J through orbit analysis, calculate the sun incidence angle θ through the satellite orbit information and the solar array attitude information, and obtain the attenuation factor η by analyzing the satellite telemetry parameter data method in orbit, and Real-time adjustment of the solar light intensity coefficient J, solar incident angle θ and attenuation factor η state update value according to the observation value through the particle filter method;

[0076] The prediction unit is used to obtain the result according to the calculation unit, by P=V×I=P 0 ×J×cos(θ)×η predicts the attenuation of the output power of the solar cell array, where V and I represent the operating voltage and current of the solar cell array respe...

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Abstract

The invention discloses a solar cell array output power attenuation predicating method and device. The method includes: predicating solar cell array output power attenuation through a formula that P=VXI=P0XJXcos(theta)Xeta, wherein V and I represent working voltage and working current of a solar cell array respectively, P represents in-orbit working output power of the solar cell array, P0 represents theoretical maximum output power of the solar cell array, J represents a sunlight intensity coefficient, theta represents a solar incident angle, and eta represents an attenuation factor; calculating to obtain the sunlight intensity coefficient J through orbit analysis, calculating to obtain the solar incident angle theta through satellite orbit information and solar cell array attitude information, acquiring the attenuation factor eta through a method of analyzing in-orbit satellite remote sensing parameter data, regulating status update values of the sunlight intensity coefficient J, the solar incident angle theta and the attenuation factor eta in real time by a particle filter method according to observed values, and importing into the formula to predict the solar cell array output power attenuation. By the method, the attenuation of the solar cell array output power and be estimated accurately so as to provide references for satellite design and orbit management.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for predicting output power attenuation of a solar cell array. Background technique [0002] The solar cell array is the main energy source of the satellite in orbit, and its output power determines the use value of the satellite to a large extent. During the entire life cycle of the satellite, the power demand of the satellite load changes little, but the output power of the solar cell array continues to decay; in the early and middle stages of the satellite's life, the power demand of the satellite load is less than the output power of the solar cell array, which can maintain the power of the satellite. Power balance; however, when the satellite is at the end of its life, the output power of the solar array will attenuate greatly, which may affect the normal operation of the satellite. However, there is currently no method that can predict the output powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 樊焕贞房红征罗凯李蕊王伟熊毅文博武邓薇汪家全
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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