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A method for measuring the equivalent parallel resistance of multi-junction concentrating solar cells

A technology of solar cells and multi-junction cells, applied in the field of solar photovoltaic power generation, can solve the problems affecting the output performance of the device, its own temperature rise, consumption, etc., and achieve the effect of monitoring the production process

Inactive Publication Date: 2017-02-01
HUBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The sub-cells with insufficient parallel resistance in multi-junction concentrating solar cells are often in negative voltage bias when the device is working near the short-circuit current, and the sub-cells in negative voltage bias will act as loads to consume the output power of other sub-cells, and at the same time Cause its own temperature to rise, and ultimately affect the output performance of the device

Method used

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  • A method for measuring the equivalent parallel resistance of multi-junction concentrating solar cells
  • A method for measuring the equivalent parallel resistance of multi-junction concentrating solar cells
  • A method for measuring the equivalent parallel resistance of multi-junction concentrating solar cells

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Embodiment Construction

[0016] The present invention will be further explained below in conjunction with the drawings. The specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] The implementation method proposed by the present invention can be performed according to the following steps, but the implementation sequence is not limited:

[0018] a) Established for GaInP / GaInAs / Ge triple junction concentrating solar cells figure 1 The schematic diagram of the equivalent circuit model shown. Where current source I sci Is the short-circuit current of each junction cell, used to describe the photo-generated current of each junction cell; diode D i1 Used to describe the carrier recombination in the depletion region of each junction battery; d...

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Abstract

The invention provides a method for measuring the equivalent parallel-connection resistance value of a multi-junction concentrating solar battery, wherein the method is a fast and effective measurement method. Through the method, the equivalent parallel-connection resistance value in all junction cells of the multi-junction concentrating solar battery can be obtained, so that comprehensive analysis of the output characteristic of the multi-junction concentrating solar battery is facilitated, and meanwhile, the purpose of monitoring the multi-junction concentrating solar battery semiconductor production technology can be achieved by measuring the parallel-connection resistance value.

Description

Technical field [0001] The invention relates to the technical field of solar photovoltaic power generation, in particular to a method for measuring the resistance value in an equivalent parallel circuit of a multi-junction concentrating solar cell. Background technique [0002] Part of the electrical energy generated by the solar cell will be lost due to its internal leakage current. This phenomenon is generally described by its internal equivalent parallel resistance. For multi-junction concentrating solar cells working under high-concentration conditions, the photo-generated current is very large, and the leakage current caused by the equivalent parallel resistance inside the device is more serious. The resistance of the parallel resistance affects the output current The impact of this cannot be ignored. [0003] Each junction cell in a multi-junction concentrating solar cell is connected in series through a tunnel diode, so the output current of the multi-junction cell is limit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/02
Inventor 吕辉刘文盛飞代金梅柳阳马新国张金业
Owner HUBEI UNIV OF TECH