A symmetrical two-stage planar reflective concentration method applied to space solar power plants

A flat reflection, solar panel technology, applied in photovoltaic power generation, electrical components, photovoltaic modules, etc., can solve the problems of uneven distribution of concentrated energy flow, mismatch of spot shape and solar cell shape, and high tracking difficulty, to avoid heat Control equipment, solve the problem of homogenization, and improve the effect of power generation efficiency

Active Publication Date: 2015-08-19
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of uneven distribution of concentrated energy flow, mismatch between the shape of the light spot and the shape of the solar cell, and high difficulty in tracking in the current solar energy concentration system scheme. Two-Stage Planar Reflection Aggregation Method

Method used

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  • A symmetrical two-stage planar reflective concentration method applied to space solar power plants
  • A symmetrical two-stage planar reflective concentration method applied to space solar power plants
  • A symmetrical two-stage planar reflective concentration method applied to space solar power plants

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specific Embodiment approach 1

[0037] Specific implementation mode one: combine figure 1 , figure 2 , image 3 and Figure 4 Describe this embodiment, the symmetrical two-stage planar reflection and gathering method applied to space solar power plants described in this embodiment, it includes the following steps:

[0038] Step 1: Establish a symmetrical two-stage planar reflection system:

[0039] A first-level off-axis parabolic reflector is respectively arranged on both sides of the solar panel, and two first-level off-axis parabolic reflectors are arranged symmetrically with the optical axis perpendicular to the solar panel. The first-level off-axis parabolic reflector Formed by intercepting a paraboloid of revolution by an inclined plane;

[0040] A secondary inclined plane reflector is respectively arranged on both sides of the focus of the two primary off-axis parabolic reflectors, and the two secondary inclined plane reflectors are arranged symmetrically; the area of ​​the secondary inclined pla...

specific Embodiment approach 2

[0055] Specific implementation mode two: combination figure 1 Describe this embodiment, this embodiment is a further limitation of the symmetrical two-stage planar reflection and concentration method applied to space solar power plants described in the first embodiment,

[0056] In the second step, based on the principle of geometric optics, the two elliptical spots presented on the surface of the solar panel can be completely overlapped. At the same time, based on the requirements of the concentration ratio required by the solar cell array, the symmetrical two-stage planar reflection system established in the first step is obtained. The method for the optimal structure parameter of is:

[0057] Solve the system of equations for the optimal structural parameters of a symmetric two-stage planar reflector system:

[0058]

[0059] In the formula, the geometric concentration ratio is C G , A s is the area of ​​the focused spot at the time of coincidence, θ c is the accepta...

specific Embodiment approach 3

[0090] Specific embodiment three: this embodiment is a further limitation of the symmetrical two-stage planar reflection and gathering method applied to space solar power plants described in specific embodiment two,

[0091] The optimal structural parameters of the finally determined symmetrical two-stage planar reflection system are as follows:

[0092]

[0093]

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Abstract

The invention discloses a symmetric type two-level plane reflection gathering method applied to a space solar power station, and relates to symmetric type two-level plane reflection gathering methods. The method aims to solve the problems that in a current solar energy gathering system scheme, gathering energy flow distribution is uneven, a light spot pattern does not match the shape of a solar cell, and tracking difficulty is high. A reflecting system is established through the following steps that first level off-axis parabolic reflecting planes are arranged on the two sides of a solar cell panel respectively, the two first level off-axis parabolic reflecting planes are symmetrically arranged around an optical axis perpendicular to the solar cell panel, two second level tapered plane mirrors are symmetrically arranged on the two sides of the focus of the two first level off-axis parabolic reflecting planes respectively, two elliptic light spots generated on the surface of the solar cell panel overlap completely, the optimum structure parameter of the reflecting system is calculated, tracking error regulation is carried out on the reflecting system, the reflecting system under in-orbit operation is regulated in two dimensions, and a solar cell array can achieve energy flow gathering. The method is used for energy flow gathering of the space solar power station.

Description

technical field [0001] The invention relates to a symmetrical two-stage planar reflection gathering method, in particular to a symmetrical two-stage planar reflection gathering method applied to a space solar power station. Background technique [0002] The photovoltaic power generation industry has developed rapidly in recent years. Concentrating photovoltaic systems gather multiple times of solar energy on panels through concentrators, which improves the concentration ratio and power generation efficiency, and achieves the effect of saving panel area and reducing costs. There are many problems in the traditional concentration system scheme, such as the uneven distribution of the concentration energy flow, the mismatch between the shape of the light spot and the shape of the solar cell, and the high difficulty of tracking. [0003] Space solar power station, also known as space-based solar power station, refers to a power generation system that converts solar energy into el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S40/22
CPCY02E10/52
Inventor 孟宪龙夏新林孙创戴贵龙
Owner HARBIN INST OF TECH
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