Maximum power point-tracking photovoltaic system based on ant colony-artificial immune hybrid optimization algorithm

A technology of maximum power point and optimization algorithm, applied in the field of power electronics, can solve problems such as stagnation, prone to premature, long search time, etc., and achieve the effect of improving power generation performance ratio, precise adjustment ability, and improving tracking efficiency

Inactive Publication Date: 2012-08-29
GUANGXI NANNING HUATAI DELONG INFORMATION TECH
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the current maximum power point tracking system requires a long search time and is prone to premature and stagnant phenomena, so as to improve the power generation efficiency of photovoltaic power generation systems

Method used

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  • Maximum power point-tracking photovoltaic system based on ant colony-artificial immune hybrid optimization algorithm
  • Maximum power point-tracking photovoltaic system based on ant colony-artificial immune hybrid optimization algorithm
  • Maximum power point-tracking photovoltaic system based on ant colony-artificial immune hybrid optimization algorithm

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Embodiment Construction

[0009] figure 1 The power optimizer shown retains the proven series panel arrangement and improves upon it by distributing only the DC / DC and PMMT functions to the panels. At the same time, the power optimizer architecture is perfectly compatible with existing multi-level inverters and will actually enable them to operate more efficiently because the bus voltage can be kept at a higher level and more constant. Power optimizers are not limited to boosting the performance of DC / DC converters, they can handle both energy-intensive and energy-depleting situations. Increased irradiance due to reflections (a mismatch problem as opposed to shading) can also be exploited to increase throughput. Also power optimizers have the ability to handle power changes by adding panels to a string (making the string generate more power) or removing one or two panels from a string (thus reducing power) .

[0010] Ant colony algorithm has strong advantages in solving complex combinatorial optimiz...

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Abstract

The invention provides an ant colony-artificial immune hybrid optimization algorithm-based maximum power point-tracking solution in a set of photovoltaic power generation system, in particular to a maximum power point-tracking photovoltaic system based on an ant colony-artificial immune hybrid optimization algorithm. The ant colony algorithm has a powerful advantage in solving the complex combinatorial optimization problem but has certain defects as well, and aimed at the problem that individual ants in the ant colony algorithm lack the ability of identifying problem characteristic information, the idea of vaccine in the immune algorithm is introduced into the ant colony algorithm to provide the ant colony-immune hybrid algorithm. Power optimizers applying the algorithm carry out dual-tracking on solar panels; on one hand, the optimal local MPP (maximum power point) is tracked; and on the other hand, the energy transmission in the system is increased to the max. The power optimizers are indirectly connected with one another, have cognitive ability and self-organization ability, and can detect and independently regulate respective current and voltage environments until the whole string of solar panels reaches an optimal value, and meanwhile, the level of the solar panels reaches a local optimal point.

Description

technical field [0001] The technical solution of the invention belongs to the technical field of power electronics, and is a power supply optimization system based on advanced artificial intelligence algorithms, which is used in photovoltaic power generation systems to improve power generation efficiency. Background technique [0002] Due to the strong nonlinear characteristics of the solar cell array, in order to ensure that the solar cell array can always output the corresponding maximum power under any light and ambient temperature, the maximum power point tracking control technology of the solar cell is usually introduced. Through the research and analysis of the principle of solar cell power generation, the volt-ampere characteristics of photovoltaic cells, and the influence of junction temperature and light intensity on the output characteristics of solar cells, it provides a theoretical basis and research comparison data for the study of maximum power tracking. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N3/00H02N6/00
Inventor 李捷
Owner GUANGXI NANNING HUATAI DELONG INFORMATION TECH
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