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Method for establishing distributed resistance model of solar cell

A technology of solar cell and resistance model, applied in electrical digital data processing, instrumentation, calculation, etc., can solve the problems of not taking into account the non-uniformity of the two-dimensional surface of the solar cell and the influence of the overall performance of the solar cell, etc.

Pending Publication Date: 2019-08-27
EAST CHINA NORMAL UNIV
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Problems solved by technology

[0003] Most of the models currently used to simulate solar cells are single-diode models. This model only simplifies the equivalent of solar cells in one-dimensional direction, and does not take into account the inhomogeneity of the actual two-dimensional surface of solar cells, and these inhomogeneities Sex often has a more significant impact on the overall performance of solar cells

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  • Method for establishing distributed resistance model of solar cell
  • Method for establishing distributed resistance model of solar cell
  • Method for establishing distributed resistance model of solar cell

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Embodiment

[0023] Take the size as 4cm×2cm and the total area as 8cm 2 The establishment of the equivalent circuit model of a monolithic GaAs solar cell is illustrated as an example. Given that the ratio of length to width of the solar cell is 2, the aspect ratio L / W of the two-dimensional array of the intermediate layer in the equivalent circuit model is equal to 2. In this embodiment, a 40×20 two-dimensional array of the middle layer is constructed, and the total number of sub-circuits in the equivalent circuit model is 800. In theory, the more the total number of sub-circuits in the model, the closer the final simulation effect is to the real situation of the actual solar cell. However, with the growth of sub-circuits, the time required for calculation and simulation will also increase, so a balance between simulation effect and time consumption can be made according to the actual situation.

[0024] The method for establishing a distributed resistance model of a solar cell in this ...

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Abstract

The invention discloses a method for establishing a distributed resistance model of a solar cell. An equivalent circuit model is composed of a top-layer grid resistance structure, a middle-layer two-dimensional array and a bottom-layer grid resistance structure from top to bottom, wherein the single-diode model is equivalent to a sub-circuit, and N discrete sub-circuits are connected in parallel to form an L*W intermediate layer two-dimensional array for simulating an absorption layer of the solar cell; and the top-layer grid resistance structure and the bottom-layer grid resistance structureare respectively used for simulating the parasitic resistance effects caused by a grid electrode and a back electrode of the solar cell. The method can be used for simulating the performance of various types of solar cells in an LED working mode. The model fully considers the voltage division effect of the thin-layer resistor in the solar cell, the two-dimensional array structure determined according to the actual size of the solar cell can well simulate the nonuniformity of the surface of the solar cell, and the method is suitable for various EDA tools with SPICE simulation functions.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and relates to a method for establishing a distributed resistance model of a solar cell. Background technique [0002] Due to its abundant reserves, clean and safe characteristics, solar energy is considered to be an ideal renewable energy source to deal with global problems such as resource shortage and environmental pollution. As one of the key devices for the development and utilization of solar energy, solar cells have become a research hotspot for many scholars at home and abroad. In order to provide useful guidance for the design and manufacture of solar cells, it is necessary to establish a reasonable equivalent model and conduct circuit simulation. [0003] Most of the models currently used to simulate solar cells are single-diode models. This model only simplifies the equivalent of solar cells in one-dimensional direction, and does not take into account the inhomog...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 陈少强洪建宇王酉杨陈媛婧胡小波
Owner EAST CHINA NORMAL UNIV
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