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Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery

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

Inactive Publication Date: 2014-08-27
HUBEI UNIV OF TECH
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  • Claims
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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

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  • Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery
  • Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery
  • Method for measuring equivalent parallel-connection resistance value of multi-junction concentrating solar battery

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Embodiment Construction

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

[0018] a) Established for GaInP / GaInAs / Ge triple-junction concentrating solar cells figure 1 The schematic diagram of the equivalent circuit model is shown. where the current source I sci is the short-circuit current of each junction cell, which is used to describe the photogenerated current of each junction cell; diode D i1 Used to describe the carrier recombination in the depletion region of each junction cell; diode D i2 It is used to describe the recombination of carriers in the neutral region and non-passivation boundary of each junction cell; the series resistance R si Used to describe the series loss in each junction cell; the parallel resistance R shi Used to describe the leakage current loss in each junction cell. Set the initial conditions of the equivalent parallel resistance of each junctio...

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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 electric energy generated by a solar cell will be lost due to its internal leakage current, which is generally described by its internal equivalent parallel resistance. For multi-junction concentrating solar cells working under high concentration conditions, the photogenerated current is very large, and the leakage current caused by the equivalent parallel resistance inside the device is even more serious. The resistance value of the parallel resistance affects the output current impact cannot be ignored. [0003] The sub-cells in the multi-junction concentrating solar cell are connected in series through tunnel diodes, so the output current of the multi-junction cell is limited by the su...

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Application Information

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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