A method and system for sheeting optimization of a solar cell array

Abstract

The application discloses a solar cell array sheet distribution optimization method and an optimization system, and belongs to the technical field of space power supply, and is characterized in that the method comprises the following steps: S1, a finite element model is established, in the finite element model, the thermodynamic simulation of the solar cell array is performed by adjusting the OSR and the sheet distribution proportion of the solar cell sheet, the temperature of the solar cell array under different sheet distribution proportions of the OSR and the solar cell sheet is obtained, and a first curve between the sheet distribution proportion and the working temperature is fitted; S2, the solar cell array power calculation model is used to calculate the output power of the solar cell array under different temperatures, and a second curve between the temperature of the solar cell array and the output power is fitted; and S3, the first curve and the second curve are combined, the output power curve of the solar cell array is fitted along with the change of the OSR and the solar cell sheet proportion under the condition that the solar cell area changes, and the state corresponding to the peak value in the output power curve of the solar cell array is taken as the sheet distribution design state.

Description

Technical Field

[0001] This invention belongs to the field of aerospace power technology, specifically relating to a method and system for optimizing the arrangement of solar cell arrays. Background Technology

[0002] With the continuous development of deep space exploration and the increasing demand for exploration of deeper regions such as Venus and the Sun, efficient energy efficiency has become one of the main directions for the development of deep space probes. Solar arrays are a crucial component of spacecraft and the primary source of their electrical power. They convert solar energy in space orbit into electrical energy to power the spacecraft, ensuring its effective execution of various missions throughout its entire lifespan. Since solar arrays are directly exposed to the harsh space environment during operation, developing a highly efficient and environmentally adaptable solar array has become a trend.

[0003] Venus, as the closest planet to Earth among the nine planets in our solar system, has become one of the important targets for humankind's deep space exploration due to its unique scientific value and technological advancements. Because of its proximity to the Sun, Venus's orbital environment, characterized by high temperatures and intense light, differs from Mars. It receives approximately four times the heat of Mars' orbit, and solar arrays orbiting in Venus would reach temperatures of around 200°C.

[0004] The output performance of solar cells gradually decreases with increasing temperature, and the power loss of solar cell arrays is severe at 200℃. Therefore, how to reduce the temperature of solar cell arrays has become a major research focus. Analysis shows that this problem can be solved by increasing the spacing between solar cell array panels and laying OSR (Optical Separator) sheets on the front side of the solar cell array to reduce heat absorption.

[0005] This project aims to break through key technologies, innovate and optimize the solar cell laying method for the Venus orbital space environment, enhance the heat dissipation capacity of the solar cell array, and ultimately develop a solar cell array with high adaptability, high power-to-weight ratio, and high output power to support the successful completion of the Venus exploration project and provide a technical foundation for subsequent deep space exploration projects. It is of great significance for rapidly promoting the development of my country's aerospace technology and enhancing my country's independent innovation capabilities in science and technology. Summary of the Invention

[0006] This invention addresses technical problems in existing technologies by providing a method and system for optimizing the arrangement of solar cell array panels. The method involves increasing the spacing between the solar cell panels and placing OSR (Optical Separator) sheets within the gaps for heat dissipation. While a larger OSR sheet area results in lower temperatures, it also reduces the area of ​​the solar cells, leading to less power output for the same substrate area. The challenge lies in achieving a balance between heat dissipation and a high panel density to maximize output power.

[0007] The first objective of this invention is to provide a method for optimizing the arrangement of solar cell arrays, comprising:

[0008] S1. Establish a finite element model. In the finite element model, by adjusting the arrangement ratio of OSR and solar cells, perform thermodynamic simulation of the solar cell array to obtain the temperature of the solar cell array under different arrangement ratios of OSR and solar cells, and fit the first curve between the arrangement ratio and the operating temperature.

[0009] S2. Using the solar cell array power calculation model, calculate the output power of the solar cell array at different temperatures, and fit the second curve between the temperature and output power of the solar cell array.

[0010] S3. Combining the first and second curves, under the condition of changing solar cell area, fit the solar cell array output power curve as OSR and solar cell ratio change, and take the state corresponding to the peak value in the solar cell array output power curve as the cell layout design state.

[0011] Preferably, in S1: the model is established using the finite element software Ansys Workbench.

[0012] A second objective of this invention is to provide a solar cell array array optimization system, comprising:

[0013] Model building module: Establish a finite element model. In the finite element model, by adjusting the arrangement ratio of OSR and solar cells, perform thermodynamic simulation of the solar cell array to obtain the temperature of the solar cell array under different arrangement ratios of OSR and solar cells, and fit the first curve between the arrangement ratio and the operating temperature.

[0014] Calculation module: Using the solar cell array power calculation model, calculate the output power of the solar cell array at different temperatures, and fit a second curve between the temperature and output power of the solar cell array;

[0015] Optimization module: Combining the first and second curves, under the condition of changing solar cell area, fit the output power curve of the solar cell array as the OSR and solar cell ratio change, and take the state corresponding to the peak value in the output power curve of the solar cell array as the cell layout design state.

[0016] Preferably, in the model building module: the model is built using the finite element software Ansys Workbench.

[0017] A third objective of this invention is to provide an information data processing terminal, characterized in that it is used to implement the above-mentioned method for optimizing the arrangement of solar cell arrays.

[0018] A fourth objective of this invention is to provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the aforementioned method for optimizing the placement of solar cell arrays.

[0019] The advantages and positive effects of this invention are:

[0020] 1) The spaced arrangement of solar cells and OSR sheets can effectively improve the heat dissipation efficiency of solar cells, reduce the temperature of the cells, and improve the reliability of solar cell array operation under high temperature and high light intensity.

[0021] 2) By using simulation and calculation, the curves of solar cell temperature and output power change with the ratio of solar cells and OSR cells can be fitted. The balance point can be found quickly and effectively according to the working environment to obtain the optimal cell arrangement ratio. Attached Figure Description

[0022] Figure 1 The output characteristic curve of the solar cell under high temperature and high light intensity;

[0023] Figure 2 IV curves of solar cells at different temperatures;

[0024] Figure 3 Power curves of solar cells at different temperatures;

[0025] Figure 4 The curve of the maximum power point of a solar cell as a function of temperature;

[0026] Figure 5 Ansys Workbench simulation model;

[0027] Figure 6 This is a schematic diagram of the temperature simulation calculation results for the model. Detailed Implementation

[0028] To make the above-mentioned objectives, control system design, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] Definitions:

[0030] OSR: Optical Solar Reflector;

[0031] The technical solution of this invention is as follows:

[0032] A method for optimizing the arrangement of solar cell array panels includes:

[0033] The first step is to establish a finite element model of the solar cell array using the finite element software Ansys Workbench. The arrangement ratio of OSR and solar cells in the model can be adjusted. Thermodynamic simulation of the solar cell array is performed to obtain the temperature of the solar cell array under different OSR and solar cell arrangement ratios. The first curve is fitted, which is the curve between the arrangement ratio and the operating temperature.

[0034] The second step is to calculate the output power of the solar array at different temperatures based on the solar array power calculation model in the "Solar Array Design Manual" and fit the second curve, which is the curve between the temperature and output power of the solar array.

[0035] The third step involves combining the two curves mentioned above, considering the change in solar cell area, and fitting the output power curve of the solar cell array as the OSR and solar cell ratio change. The state corresponding to the peak value of the curve is the optimal cell layout design state.

[0036] like Figure 1 As shown, the current of the same solar cell array will increase and the voltage will decrease under high temperature and high light intensity conditions.

[0037] like Figure 2 As shown, the IV curve of the solar cell array at 25℃ is the rightmost curve in the figure. The curve gradually shifts to the left as the temperature increases, with the leftmost curve representing the IV curve of the solar cell array at 200℃. This indicates that for the same solar cell array, as the temperature rises, the short-circuit current increases and the open-circuit voltage decreases.

[0038] like Figure 3 As shown, the solar cell array curve at 25℃ is the uppermost curve in the figure. The curve gradually shifts downwards as the temperature increases, with the lowermost curve representing the PV curve of the solar cell array at 200℃. The current gradually increases. It can be seen that for the same solar cell array, both output power and voltage decrease with increasing temperature.

[0039] like Figure 4 As shown, the maximum output power of the same solar cell array decreases continuously as the temperature increases.

[0040] like Figure 5 As shown, the finite element model of the solar cell array includes solar cell 1, OSR sheet 2, and aluminum honeycomb substrate 3.

[0041] like Figure 6 The diagram shows the temperature at different locations of the solar cell array under high temperature and high light intensity conditions.

[0042] A solar cell array array optimization system includes:

[0043] Model building module: A finite element model of a solar cell array is built using the finite element software Ansys Workbench. The arrangement ratio of OSR and solar cells in the model can be adjusted. Thermodynamic simulation of the solar cell array is performed to obtain the temperature of the solar cell array under different OSR and solar cell arrangement ratios. The first curve is fitted, which is the curve between the arrangement ratio and the operating temperature.

[0044] Calculation module: Based on the solar array power calculation model in the "Solar Array Design Manual", calculate the output power of the solar array at different temperatures and fit the second curve, that is, the curve between the temperature and output power of the solar array.

[0045] Optimization module: Combining the two curves above, considering the change in solar cell area, we fit the output power curve of the solar cell array as the OSR and solar cell ratio change, and take the state corresponding to the peak of the curve as the optimal cell layout design state.

[0046] An information data processing terminal is characterized by a method for optimizing the arrangement of solar cell arrays as described above.

[0047] A computer-readable storage medium includes instructions that, when executed on a computer, cause the computer to perform the aforementioned method for optimizing the layout of a solar cell array.

[0048] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented, in whole or in part, as a computer program product, the computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A method for optimizing the arrangement of solar cell array panels, characterized in that, include: S1. A finite element model is established using the finite element software Ansys Workbench. In the finite element model, the thermodynamic simulation of the solar cell array is performed by adjusting the arrangement ratio of OSR and solar cells. The temperature of the solar cell array under different arrangement ratios of OSR and solar cells is obtained, and the first curve between the arrangement ratio and the operating temperature is fitted. The solar cells and OSR cells are arranged in an intermittent manner. S2. Using the solar cell array power calculation model, calculate the output power of the solar cell array at different temperatures, and fit the second curve between the temperature and output power of the solar cell array. S3. Combining the first and second curves, under the condition of changing solar cell area, fit the solar cell array output power curve as OSR and solar cell ratio change, and take the state corresponding to the peak value in the solar cell array output power curve as the cell layout design state.

2. A solar cell array array array optimization system, characterized in that, include: Model building module: A finite element model is built using the finite element software Ansys Workbench. In the finite element model, the thermodynamic simulation of the solar cell array is performed by adjusting the arrangement ratio of OSR and solar cells to obtain the temperature of the solar cell array under different arrangement ratios of OSR and solar cells, and the first curve between the arrangement ratio and the operating temperature is fitted. The solar cells and OSR cells are arranged in an intermittent manner. Calculation module: Using the solar cell array power calculation model, calculate the output power of the solar cell array at different temperatures, and fit a second curve between the temperature and output power of the solar cell array; Optimization module: Combining the first and second curves, under the condition of changing solar cell area, fit the output power curve of the solar cell array as the OSR and solar cell ratio change, and take the state corresponding to the peak value in the output power curve of the solar cell array as the cell layout design state.

3. An information data processing terminal, characterized in that, The method for optimizing the arrangement of solar cell arrays as described in claim 1.

4. A computer-readable storage medium comprising instructions, when executed on a computer, causing the computer to perform the solar cell array layout optimization method of claim 1.

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