MPPT (maximum power point tracking) control method based on particle swarm global optimization and conductance increment methods

A conductance incremental method and global optimization technology, which is applied in the direction of adjusting electrical variables, control/regulation systems, photovoltaic power generation, etc., can solve the problem of inaccurate tracking of the global maximum power point

Inactive Publication Date: 2016-11-09
JIANGSU LINYANG ENERGY CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to solve the inaccurate problem of tracking the global maximum power point in the case of multiple peaks, and propose a conductance incremental method MPPT algorithm based on particle swarm global optimization

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  • MPPT (maximum power point tracking) control method based on particle swarm global optimization and conductance increment methods
  • MPPT (maximum power point tracking) control method based on particle swarm global optimization and conductance increment methods
  • MPPT (maximum power point tracking) control method based on particle swarm global optimization and conductance increment methods

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] like figure 1 As shown, a MPPT control method based on particle swarm global optimization and conductance incremental method, it includes the following steps:

[0037] (1) Use the particle swarm global optimization method to globally track the output power of the photovoltaic array, search for an approximate global maximum power point, and sample the output voltage and current of the photovoltaic array at this moment, specifically;

[0038] (1-1) Use the particle swarm global optimization method to search the output power of the photovoltaic array, and use the following formula to update and iterate to obtain the individual optimal speed and position of particle i in the current iteration;

[0039] v i k ...

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Abstract

An MPPT (maximum power point tracking) control method based on particle swarm global optimization and conductance increment methods comprises the following steps that firstly, global tracking is carried out on the output power of a photovoltaic array through the particle swarm global optimization method, searching is carried out to obtain an approximate global maximum power point, and the output voltage and current of the photovoltaic array at the moment are sampled; secondly, according to the voltage and the current, obtained through sampling, of the photovoltaic array, the tracking speed is adjusted through the conductance increment method, and finally, the maximum power point is obtained through tracking. The particle swarm algorithm is used for carrying out global tracking, the conductance increment method is used for later optimization, and the defects in the process of tracking the maximum power point under the situation that part of the photovoltaic array is shaded are overcome.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation. , especially a MPPT control method based on particle swarm global optimization and conductance incremental method. Background technique [0002] At present, the maximum power point tracking (MPPT) control method is one of the key technologies to improve the power generation efficiency of photovoltaic systems. However, due to the nonlinear characteristics of the output of photovoltaic cells, the maximum power point output by the photovoltaic system will always change under different external environmental conditions. Some MPPT algorithms cannot track the maximum power point in real time, which will inevitably cause system Loss of power and drop in work efficiency. For this reason, the maximum power point tracking control of the photovoltaic power generation system must be realized so that the maximum power output can be obtained under any environmental conditions. [0003]...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 余运俊闵卫东韩清王淳周辉林曾繁鹏方壮志
Owner JIANGSU LINYANG ENERGY CO LTD
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