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A Method of Maximum Power Point Tracking Based on Improved Beetle Search Algorithm

A technology of maximum power point and search algorithm, applied in instruments, control/regulating systems, regulating electrical variables, etc., can solve problems such as the inability to meet the needs of MPPT control, and achieve good global optimization capabilities.

Inactive Publication Date: 2020-08-11
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing beetle beetle search algorithm cannot meet the needs of MPPT control under partially shaded conditions

Method used

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  • A Method of Maximum Power Point Tracking Based on Improved Beetle Search Algorithm
  • A Method of Maximum Power Point Tracking Based on Improved Beetle Search Algorithm
  • A Method of Maximum Power Point Tracking Based on Improved Beetle Search Algorithm

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Embodiment Construction

[0020] The following will refer to the attached Figure 1 to Figure 7 , Figure 8 To describe the specific embodiment of the present invention in more detail, firstly, the output characteristics of the photovoltaic array are explained.

[0021] A photovoltaic array is composed of multiple photovoltaic cells connected in series and in parallel. When the same photovoltaic array is in an environment with uniform illumination and the same temperature, its power output characteristic curve presents a nonlinear single-peak characteristic; Under non-uniform conditions, its output characteristics show multi-peak characteristics. The mathematical model of photovoltaic cells is shown in the following formula (1):

[0022]

[0023]

[0024]

[0025] Among them: I represents the output current of the photovoltaic cell, the unit is A; V represents the output voltage of the photovoltaic cell, the unit is V; I ph Indicates the photocurrent, affected by the light intensity λ, the ...

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Abstract

The present disclosure proposes a method for tracking a maximum power point based on improved beetle antennae search, which can adapt to changes in global parameters for solving at the same time of quick optimization and can reduce the amplitude of oscillation. The present disclosure also proposes an MPPT control method based on improved beetle antennae search, which can overcome the shortcomingsin the prior art and can well meet the requirements of maximum power point tracking (MPPT) under partial shadow.

Description

technical field [0001] The present disclosure relates to the field of photovoltaics, in particular, to a method of maximum power point tracking based on an improved beetle-beard search algorithm. Background technique [0002] In the photovoltaic power generation system, due to the nonlinear characteristics of the output power of the photovoltaic cell group, its energy conversion efficiency is relatively low, which affects the power generation efficiency of the photovoltaic power generation system. Therefore, improving the energy utilization rate of photovoltaic power generation system has become the focus of research in this field. [0003] Photovoltaic power generation systems may be connected to inverters, external grids, battery packs or other electronic loads. But no matter what kind of load it is connected to, the problems to be dealt with in MPPT are similar, that is, the efficiency of solar cell power transmission is related to the amount of sunlight hitting the sola...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/67
CPCG05F1/67
Inventor 马浩淼王苇
Owner SHAANXI NORMAL UNIV