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A tracking method and controller for double-sided photovoltaic cell modules based on intelligent control

A technology of double-sided photovoltaic cells and modules, applied in the direction of use feedback control, etc., can solve the problems that the utility model is difficult to be widely used, cannot detect the intensity of sunlight received by double-sided modules, and the loss of power generation.

Active Publication Date: 2021-05-18
江苏林洋新能源科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Since the angle of the sun's incident light is constantly changing, the double-sided battery module is only fixed vertically, and the maximum energy of the sun's light cannot be fully obtained in this direction, which will inevitably cause a certain amount of power loss;
[0006] (2) When the double-sided battery module receives reflected sunlight, its design structure determines that the light irradiation received by the module at the root is inconsistent with that at the top. The long-term unbalanced light irradiation of the double-sided battery module will lead to a decrease in its life. ;
[0007] (3) The load of the tracking bracket has been increased while adding the reflector. Further, the "V" shaped reflector is also a kind of joyride structure. In the case of strong wind, the main structure is extremely easy to be damaged;
[0008] (4) It is impossible to detect the overall intensity of sunlight received by the front and back of the double-sided module, and it is impossible to adjust the inclination angle of the module according to the sun's orbit to achieve the maximum power generation, which will inevitably cause a loss of power generation of the double-sided module
[0009] In summary, it is difficult for this utility model to be widely used in the market

Method used

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  • A tracking method and controller for double-sided photovoltaic cell modules based on intelligent control
  • A tracking method and controller for double-sided photovoltaic cell modules based on intelligent control
  • A tracking method and controller for double-sided photovoltaic cell modules based on intelligent control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Taking Nanjing as an example on July 8, 2016, based on the geographical location information of a photovoltaic power station, the local solar trajectory is generated as follows: figure 1 shown. figure 1 It is a map of the sun's trajectory at an altitude of 10 meters in Nanjing City (longitude 118.81°, latitude 32.04°) on that day. The picture is generated by the professional photovoltaic design software PVSYST, using the precise data of the Meteonorm meteorological satellite, and the orbit of the sun can also be obtained by other methods. The tracking method includes the following steps:

[0040] S101. Acquire the real-time altitude angle of the sun at 75.3° at the initial stage of the period T (set to 10 minutes in this embodiment);

[0041] S102. Obtain an initial adjustment target angle of 14.7°;

[0042] S103. Measure the current angle of the double-sided photovoltaic cell assembly as 12.5°, compare it with the initial adjustment target angle, convert ...

Embodiment 2

[0048] Embodiment 2: Taking Nanjing as an example on July 8, 2016 (carrying out a photovoltaic power generation test of the same scale at the same time and adjacent position as in Implementation 1), 36 groups of fixed light intensity sensors were set on the single-axis tracking bracket, and 36 groups The light intensity sensors are evenly arranged in a ring shape (so the adjustment accuracy is 5°, and it belongs to the single-axis tracking method). The tracking method includes the following steps:

[0049] S201, 36 groups of light intensity sensors simultaneously measure the light intensity value and calculate the integral of the light intensity value over time in a fixed period T (set to 10 minutes in this embodiment), and the two light intensity sensors of each group in the period T Integral value summation S i , S i Indicates the sum of the integral values ​​of the two light intensity sensors of the i-th group;

[0050] S202. After the period T is over, determine S 1 , S...

Embodiment 3

[0058] Embodiment 3: A tracking controller for double-sided photovoltaic cell modules based on intelligent control, written in the control method of Embodiment 1 or 2.

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Abstract

The invention discloses a tracking method and a controller for a double-sided photovoltaic cell assembly based on intelligent control. The tracking method calculates the maximum light intensity receiving angle value within a period of a light intensity sensor, and adjusts the angle and the maximum light intensity of the double-sided photovoltaic cell assembly. The light intensity receiving angle value is the same. The invention solves the loss of power generation caused by a series of environmental factors such as the different terrain of the installation site, the occlusion of the bracket, the background color, and the passing of objects of the double-sided photovoltaic cell module. Based on the real-time measurement of the sensor and the real-time control of the controller, the present invention gives full play to the greatest advantages of high conversion efficiency and high power generation of the double-sided photovoltaic cell.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a tracking method and controller for double-sided photovoltaic cell components based on intelligent control. Background technique [0002] A photovoltaic system usually consists of many photovoltaic modules connected in series and parallel to form a photovoltaic array. Through the photoelectric conversion effect, the solar energy is converted into DC power, which is then converted into AC power by an inverter, and finally incorporated into the grid. At present, conventional photovoltaic modules are usually used on the side of the photovoltaic array, that is, photovoltaic cells are arranged on the front of the module, which can convert light into electricity. In the case of increasingly intensified contradictions between supply and demand of resources, the further development and utilization of solar energy will surely become a future development trend. Impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/12
CPCG05D3/12
Inventor 潘少峰田介花陆文俊王旭颖
Owner 江苏林洋新能源科技有限公司
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