A Dense Concentrating Photovoltaic Cell Array with Reduced Mismatch Loss

A battery array and concentrating photovoltaic technology, applied in the field of solar energy utilization, can solve the problems of DA-CPV system cost increase, large optical loss, etc., and achieve the effect of improving output characteristic curve, increasing power output, and optimizing heat transfer structure

Active Publication Date: 2019-11-12
恒基能脉新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of secondary homogenization equipment has a large optical loss, and the use of special-shaped cells requires special design and manufacture according to the specific light concentrating equipment, resulting in an increase in the cost of the DA-CPV system

Method used

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  • A Dense Concentrating Photovoltaic Cell Array with Reduced Mismatch Loss
  • A Dense Concentrating Photovoltaic Cell Array with Reduced Mismatch Loss
  • A Dense Concentrating Photovoltaic Cell Array with Reduced Mismatch Loss

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Preferably, the connection is performed in a square-arranged dense array with four corners rotationally symmetrically connected. This embodiment adopts Figure 5 Gaussian distribution lighting conditions shown, select Image 6 The 6×6 square concentrating photovoltaic dense battery array shown, a total of 36 square concentrating photovoltaic cells, each battery is 10mm×10mm, arranged into a 6×6 battery array, and each battery is from 1 -36 for numbering. The connection method is like Figure 7 As shown, the battery array is divided into 4 sub-modules with the coordinate axis origin as the center and the coordinate axis as the boundary line, and each sub-module includes 9 concentrating cells symmetrical about the origin. Connect the batteries numbered 1, 2, 3, 7, 8, 9, 13, 14, 15 in parallel, named as a square array with four corners rotationally symmetrically connected to the fourth submodule 234, and numbered 4, 5, 6, 10, The batteries of 11, 12, 16, 17, and 18 are con...

Embodiment 2

[0045] Preferably, the connection is made in a square-arranged dense array diagonally rotationally symmetrical connection mode, this embodiment adopts Figure 5 Gaussian distribution lighting conditions shown, select Image 6 The 6×6 square concentrating photovoltaic dense battery array shown, a total of 36 square concentrating photovoltaic cells, each battery is 10mm×10mm, arranged into a 6×6 battery array, and each battery is from 1 -36 for numbering. The difference from the first embodiment is that the connection method of the dense concentrating photovoltaic cell array is as follows: Picture 9 As shown, in order to adapt to different voltage and current requirements, this embodiment adopts a diagonal rotation symmetrical connection mode to achieve effective complementarity with the first embodiment. Parallel the batteries numbered 1, 7, 13, 19, 25, 31 on both sides of the battery array, and name the square array diagonally and rotationally symmetrically connected to the fir...

Embodiment 3

[0047] Preferably, the connection is performed in a circular arrangement of a dense array containing special-shaped cells in a rotationally symmetrical connection at four corners. The difference from the first and second embodiments is that the array shape is circular and consists of 52 photovoltaic cells. Including square concentrating cells and special-shaped cells. Each cell is connected to form an array and then used in the concentrated photovoltaic power generation system. Its connection method is like Picture 11 As shown, with the origin of the coordinate axis as the center and the coordinate axis as the boundary, the battery array is divided into four sub-parts, which will be numbered 1, 2, 5, 6, 7, 11, 12, 13, 14, 19, 20 , 21, 22 batteries are connected in parallel, named as a circular arrangement. The four corners of the shaped battery array are rotationally symmetrically connected to the fourth sub-module 254, which will be numbered 3, 4, 8, 9, 10, 15, 16, 17, 18, 2...

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Abstract

The invention relates to a dense-condensation photovoltaic cell array reducing mismatch loss, belongs to the technical field of solar energy utilization, and aims at reducing the mismatch loss of thedense cell array under non-uniform radiation and improving the power output of the dense cell array. The dense-condensation photovoltaic cell array of a rotational symmetry structure is divided into sub-modules in rotational symmetry, cells in each sub-module are connected in parallel, serial or full manner or a parallel, serial and full mixed manner, and the sub-modules are connected in series. Connection design with rotational symmetry characteristics enables that power loss caused by current and voltage mismatch of the dense cell array module of a large condenser can be reduced obviously under the real illumination condition with Gaussian or truncated cone-shaped distribution characteristics, power output of the cell array is further improved, and the efficiency, economical performanceand reliability of a dense-condensation photovoltaic cell array power generation system are improved.

Description

Technical field [0001] The invention belongs to the technical field of solar energy utilization, and particularly relates to a dense concentrating photovoltaic cell array that reduces mismatch loss. Background technique [0002] Currently, solar photovoltaic power generation has become the third largest renewable energy utilization method. Solar photovoltaic power generation system uses the photovoltaic effect of semiconductor materials to generate electricity, and has the advantages of high efficiency, no moving parts, and modularization of the system. Solar photovoltaic power generation systems are usually flat-panel photovoltaics, using thin-film cells or silicon cells, and the power generation efficiency is about 14-20%. The power generation system that adopts single-axis or multi-axis tracking type concentrating photovoltaic usually uses III-V cells or stacked cells, and the power generation efficiency can reach 25-35%, and the land area occupied by the power plant can be g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/052
CPCH01L31/048H01L31/052H01L31/0521Y02E10/50
Inventor 巨星潘信宇徐超周逸挺袁梦迪杜小泽杨勇平
Owner 恒基能脉新能源科技有限公司
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