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Control method, device and system of photovoltaic tracking support

A control method, photovoltaic technology, applied in the direction of using feedback control, photovoltaic power generation, solar thermal power generation, etc., can solve the problems of loss of power generation, loss of photovoltaic tracking brackets and motors, etc.

Pending Publication Date: 2022-07-12
SUNGROW SHANGHAI CO LTD
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  • Abstract
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a control method for photovoltaic tracking brackets, aiming at solving the problem that in the prior art, due to violent changes in weather and radiation, the rotation range of photovoltaic tracking brackets changes drastically, resulting in the loss of both power generation and loss. Technical issues of photovoltaic tracking bracket and motor

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Embodiment Construction

[0036] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0037] In the prior art, a widely applicable traditional astronomical algorithm + inverse tracking algorithm is proposed for the tracking system. Among them, in the traditional astronomical algorithm, the direct light received by the photovoltaic module panel is guaranteed to be the strongest by calculating the position of the sun. The advantage of this method is that it is stable, and there will be no large fluctuations in the stable rotation of the tracking axis; but the disadvantage is that scattered light is not considered. , because in cloudy or cloudy weather, scattered light is the main component of irradiance, and running traditional astronomical algorithms on the tracking axis will lose power generation. Among them, the inverse tracking algorithm is an optimization of the traditional astronomical algori...

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Abstract

The invention discloses a control method, device and system for a photovoltaic tracking support, and belongs to the field of photovoltaic power generation, and the method comprises the steps: determining an actual angle, a maximum rotation angle and a theoretical optimal angle of the photovoltaic tracking support at the current moment; whether the theoretical optimal angle is within the angle range of the maximum rotation angle on the basis of the actual angle or not is judged; if yes, the photovoltaic tracking support is rotated on the basis of the actual angle, so that the actual angle of the rotated photovoltaic tracking support is the theoretical optimal angle. The theoretical optimal angle and the maximum rotation angle of the photovoltaic tracking support are limited through calculation, and the photovoltaic tracking support is prevented from rotating substantially due to fluctuation of weather and irradiation, so that the influence of the fluctuation of the weather and the irradiation on the photovoltaic tracking support is delayed, the photovoltaic tracking support does not have great angle change, and the photovoltaic tracking support is protected from being damaged. Loss of the tracking support and the motor is reduced, and stability is high. And the real-time performance is ensured by tracking the optimal angle of the theory, so that the generating capacity is increased.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a control method, device and system for a photovoltaic tracking bracket. Background technique [0002] The current intelligent tracking algorithm comprehensively considers direct light and scattered light, and obtains the angle with the largest panel surface irradiance in real time as the tracking angle of the photovoltaic tracking bracket. The advantage is that the main components of the irradiation are comprehensively considered, so that the board surface of the tracking axis receives the maximum amount of irradiation and generates more power generation income. The disadvantage is that during the actual execution, in the weather with the drastic changes in the irradiation, due to the drastic fluctuation of the irradiance, the optimal tracking angle obtained by the algorithm model will fluctuate from time to time, which makes the photovoltaic tracking bracket rotate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
CPCG05D3/12Y02E10/50
Inventor 陈相霖
Owner SUNGROW SHANGHAI CO LTD
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