Method for establishing distributed resistance model of solar cell

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...

AI Technical Summary

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

Images