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Line drive type linkage light ray tracing method and reflective concentration photovoltaic power generation thereof

A line transmission and transmission line technology, applied in the field of solar automatic tracking and concentrated photovoltaics, can solve the problems of solar energy utilization device deflection space limitation, technical difficulty and cost are not practical, water cooling or air cooling effect is limited, etc., to achieve increased tracking stability Performance and wind resistance, ensuring stability and tracking accuracy, avoiding the effect of error and deformation accumulation

Inactive Publication Date: 2011-05-25
张玉良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tracking method of connecting rod linkage limits the deflection space of the solar energy utilization device, and the weight of the connecting rod increases the tracking power consumption and affects the control accuracy, so there is still a lot of room for improvement in the solar tracking solution
[0004] An important application of tracking and concentrating technology is solar concentrating photovoltaics, which generally require good heat dissipation for the battery. The current technical solutions mainly use water cooling or air cooling, which has limited effects and is not suitable for high-magnification concentrating. Although it has been proposed to use ordinary heat pipe cooling, it is due to technical problems. Due to the difficulty and cost factors, there is no practical solution

Method used

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  • Line drive type linkage light ray tracing method and reflective concentration photovoltaic power generation thereof
  • Line drive type linkage light ray tracing method and reflective concentration photovoltaic power generation thereof
  • Line drive type linkage light ray tracing method and reflective concentration photovoltaic power generation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, half-wheel line transmission tracking and its array series-parallel linkage:

[0045] as attached figure 1 The schematic diagram of a single solar energy utilization device adopts line transmission tracking shown in the figure. The solar energy utilization device 1 is equipped with a large-diameter half wheel 2, and the driving wheel 4 drives the half wheel through the winding transmission of the steel wire rope 3, that is, drags the solar energy utilization device 1 to track. Sunlight is deflected, and the driving wheel 4 and the wound steel wire rope are directly driven by friction force, which is suitable for single-axis tracking of any solar energy utilization device. Because its tracking angle is generally within the range of ±90°, the solar energy utilization device adopts half-wheel transmission, which can increase the diameter of the wheel as much as possible and even exceed the width of the solar energy utilization device, increase the reduction r...

Embodiment 2

[0054] Embodiment 2, vertical pull wire transmission mode:

[0055] In order to further reduce the cost of tracking investment and save half rounds, the following Figure 9 and Figure 10 As shown in the line-driven interlocking tracking method according to the vertical pull drive mode, the solar energy utilization device 20 is dragged by the steel wire rope 21 in the vertical direction and connected to the busbar through the roller guide wheel 22 (the busbar is not shown in the figure). The distance between the steel wire ropes is always changing during this linkage tracking process, and the length of the roller guide wheel must meet the lateral displacement range of the steel wire ropes during the tracking process. It is similar to the connection and transmission mode between the busbars in the tracking array described in Embodiment 1, but in order to adapt to the characteristics of changes in the distance between wire ropes, an additional Figure 11 It shows the double-bu...

Embodiment 3

[0056] Embodiment 3, oblique straight wire transmission mode:

[0057] as attached Figure 12 The line-driven tracking principle of the oblique-straight-pull drive mode shown can avoid the trouble of displacement of the busbar spacing in Embodiment 2. However, a characteristic of the oblique straight-pull transmission method is that with the change of the deflection angle of the solar energy utilization device, the elongation and shortening of the steel wire ropes on both sides vary in different amounts, and a tension compensation device must be added.

[0058] attached Figure 13 is the geometric calculation analysis diagram of the oblique straight pull drive mode, AC is the distance from the action point of the steel wire rope on the solar energy utilization device, AB and BC are the theoretical lengths from the oblique pull length of the steel wire ropes on both sides to the intersection point, O is the deflection center, For the deflection angle of the solar device, set...

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Abstract

The invention relates to a line drive type linkage light ray tracing method and reflective concentration photovoltaic power generation thereof, which belong to the field of solar energy automatic tracing and concentration photovoltaics. In the invention, according to the characteristic that solar light rays deflect slowly and deflect in a range from about -90 degrees to +90 degrees and the characteristic that the combination of steel rope drive and a wheel can realize the pulling drive at any spatial angle, pulling is adopted in both forward and backward directions to enable a solar energy utilization device to deflect with light rays or return to reset. Line drive can control the independent solar utilization device, the array type linkage tracing of the solar utilization device can be realized through mutual series and parallel linkage, and thus, the tracing cost can be reduced greatly. Meanwhile, the invention provides a line drive type solar energy fixed point reflective concentration method and a battery radiation method for concentration photovoltaic power generation.

Description

technical field [0001] The invention belongs to the field of solar automatic tracking and concentrated photovoltaics. Background technique [0002] The use of tracking technology in the solar energy utilization system can increase production capacity and reduce investment, and tracking is necessary for concentrated solar energy utilization schemes. In addition, solar power generation will be widely promoted as the cost decreases, and the power generation system can extend the daily power generation peak after adopting tracking technology In summer, the daily power generation time can also be extended, which can alleviate the impact on the stability of the power grid. Therefore, low-cost high-precision tracking technology is of great significance to the widespread use of solar energy. However, the current main mode of tracking technology in the field of solar energy is still the independent tracking control mode of two-axis and two motors based on "azimuth + lift angle" contr...

Claims

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Application Information

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IPC IPC(8): G05D3/00H02N6/00H02S20/32H02S40/22
CPCF24J2/54F24J2002/5458Y02E10/47F24S30/40F24S2030/133F24S2030/136Y02E10/50
Inventor 张玉良
Owner 张玉良
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