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Modeling method for engineering mathematical model of solar cell

A technology for solar cells and silicon solar cells, which is applied in the modeling field of solar cell engineering mathematical models, can solve problems such as affecting the accuracy of the model and not considering the series resistance of solar cells, and achieves improved accuracy, good practical reference value, and satisfactory accuracy. desired effect

Inactive Publication Date: 2013-03-13
JIANGSU UNIV
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Problems solved by technology

There are three commonly used solar cell engineering mathematical models: single exponential model, double exponential model and polynomial model. model accuracy

Method used

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  • Modeling method for engineering mathematical model of solar cell
  • Modeling method for engineering mathematical model of solar cell
  • Modeling method for engineering mathematical model of solar cell

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Embodiment Construction

[0019] A modeling method of a solar cell engineering mathematical model, which only uses four electrical parameters of the solar cell module provided by the silicon solar cell manufacturer under standard test conditions, that is, the short-circuit current I sc , open circuit voltage V oc , maximum power point current I m and maximum power point voltage V m . More importantly, the influence of series resistance parameters under arbitrary light intensity and temperature is also considered, which improves the accuracy of the model.

[0020] The modeling method of the present invention comprises the following two steps:

[0021] (1) Estimation of the series resistance of solar cells at any light intensity and temperature

[0022] The currently widely used theoretical mathematical model of silicon solar cells:

[0023] I = I ph - I sat { exp [ ...

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Abstract

The invention relates to the technical field of new energy power generation and discloses a modeling method for an engineering mathematical model of a solar cell. On the basis of a theoretical mathematical model of a silicon solar cell, only four standard reference technical parameters supplied by a manufacturer under a standard testing condition need to be taken into consideration, corresponding compensation factors are introduced and influences of series resistance parameters at any light intensity and cell temperature are also taken into consideration to improve the accuracy of the model; and through calculation, an improved modeling method for the engineering mathematical model of the solar cell is deduced. Compared with other models, the model has the advantages as follows: the influences of series resistance parameters at any light intensity and cell temperature are taken into consideration, so that the accuracy of the model can be obviously improved. The calculation error of the mathematical model under an actual environment is lower than the error range of less than 6% in engineering practice, so that engineering application requirements can be preferably satisfied. The modeling method for the engineering mathematical model of the solar cell, provided by the invention, can be widely applied to simulation study and system design of photovoltaic power generation systems.

Description

technical field [0001] The invention relates to the technical field of new energy power generation, and discloses a modeling method of a solar cell engineering mathematical model. Background technique [0002] In order to alleviate the energy crisis and environmental pollution, countries all over the world are actively developing and utilizing renewable energy such as solar energy. Solar photovoltaic power generation is one of the most important technologies in many ways of utilizing solar energy, and has become a research hotspot in various countries. In order to optimize the design of solar photovoltaic power generation system, it is necessary to establish an engineering mathematical model suitable for the design and application of photovoltaic power generation system. [0003] When designing a solar photovoltaic application system, what everyone cares about is the output electrical characteristics of the solar cell, which is a nonlinear function that changes continuously...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 廖志凌施卫东梅从立徐东刘国海
Owner JIANGSU UNIV
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