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A method for determining and tracking the global maximum power point of a photovoltaic system

A maximum power point, photovoltaic system technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc., can solve the problem of slow global maximum power tracking speed of photovoltaics, and achieve the effect of simplifying operation, improving tracking speed, and improving accuracy.

Active Publication Date: 2020-11-13
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +4
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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method for determining and tracking the global maximum power point of a photovoltaic system to solve the problem of slow tracking speed of the global maximum power point of photovoltaic systems

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  • A method for determining and tracking the global maximum power point of a photovoltaic system
  • A method for determining and tracking the global maximum power point of a photovoltaic system
  • A method for determining and tracking the global maximum power point of a photovoltaic system

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Embodiment Construction

[0060] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0061] An embodiment of the present invention provides a method for determining the global maximum power point of a photovoltaic system, such as figure 1 Shown include:

[0062] S1, obtaining the highest local peak point in the power-voltage curve of the preset photovoltaic system; wherein, the preset photovoltaic system is a photovoltaic array formed of pho...

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Abstract

The embodiment of the invention provides a global maximum power point determining method and tracking method for a photovoltaic system. The tracking method comprises the following steps: acquiring a highest local peak point in a power voltage curve of the preset photovoltaic system, namely, a photovoltaic array formed by photovoltaic cell monomers made of the same material; obtaining a power per unit value corresponding to the highest local peak point according to the photovoltaic array and the highest local peak point, wherein the power per unit value includes parameters of the position of the highest local peak point and the number of the local peak points; and determining a global maximum power point of the preset photovoltaic system based on the power per unit value of the highest local peak point. According to the method, the local peak point of the power voltage curve is acquired, the power per unit value of the local peak point is solved, the local highest peak point is found from the local peak points to determine the global maximum power point in the photovoltaic system, the process of acquiring the global maximum power point is simplified by combining formula calculation,and the photovoltaic global maximum power tracking speed is improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a method for determining and tracking a global maximum power point of a photovoltaic system. Background technique [0002] Laser Power Transfer (LPT) technology is a way of using laser as energy carrier and utilizing photovoltaic effect to realize wireless energy transfer. Moreover, LPT technology has the advantages of high energy density and long energy transmission distance, and is suitable for applications that supply power to mobile electrical equipment such as aircraft. However, the transmission efficiency of the existing LPT system is only about 10%. The low efficiency of the photovoltaic array due to uneven laser irradiation is the main reason for the low transmission efficiency. Because the power-voltage output characteristic curve of the photovoltaic array presents a "multi-peak" characteristic due to the inhomogeneity of laser irradiation, the inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 黄凤金科黄辉杨天乙梁云张冉邓辉李春龙黄莉王瑶孙晓燕田文峰曾鹏飞杨智豪
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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