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Photovoltaic plate rotation positioning control method based on linear active disturbance rejection controller

A linear active disturbance rejection, positioning control technology, applied in the control using feedback and other directions, to achieve the effect of simple algorithm, strong anti-interference ability, good tracking performance and anti-disturbance performance

Inactive Publication Date: 2019-05-10
STATE GRID HUBEI ELECTRIC POWER COMPANY +1
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Problems solved by technology

However, the photovoltaic panel rotary positioning system will be affected by external interference and other factors, such as the interference of random direction and variable size natural wind, which puts forward higher requirements for the anti-interference performance of the photovoltaic rotary positioning system

Method used

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  • Photovoltaic plate rotation positioning control method based on linear active disturbance rejection controller
  • Photovoltaic plate rotation positioning control method based on linear active disturbance rejection controller
  • Photovoltaic plate rotation positioning control method based on linear active disturbance rejection controller

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Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with accompanying drawing:

[0045] As shown in the attached figure, this method of controlling the rotational positioning of photovoltaic panels based on a linear active disturbance rejection controller mainly includes the following steps:

[0046] 1) Description of the problem: The amount of solar radiation absorbed by the solar cell array is related to the angle between the incident light of the solar radiation and the normal direction of the array, that is, the incident angle Δθ. The calculation of the east-west rotation angle and the north-south oblique angle of the photovoltaic panel is realized through astronomical algorithms. On this basis, combined with the angle feedback measured by the inclination sensor, the designed tracking control algorithm controls the forward and reverse rotation of the motor, and realizes the rotation positioning of the photovoltaic panel. The structure of the photov...

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Abstract

The invention discloses a photovoltaic plate rotation positioning control method based on a linear active disturbance rejection controller. A photovoltaic plate rotation positioning control system isadopted for controlling a photovoltaic plate rotation positioning system, and the photovoltaic plate rotation positioning control system mainly comprises a linear active disturbance rejection controller, a sensing detection mechanism, a drive circuit and a DC motor and realizes photovoltaic plate rotation positioning. The designed linear active disturbance rejection controller comprises three parts: the first part is a linear tracking differentiator (LTD), the second part is a linear extension state observer (LESO), and the third part is a control law. The active disturbance rejection controller (ADRC) absorbs results of modern control theory, and adopts a core concept of PID error feedback control; the most prominent feature is that all uncertain factor roles on a controlled target are accredited to total disturbance, realizing feedback linearization of a dynamic system. The designed linear active disturbance rejection controller of a corresponding order has good tracking performanceand disturbance rejection performance.

Description

technical field [0001] The invention relates to the field of positioning control, in particular to a method for controlling the rotation and positioning of a photovoltaic panel based on a linear active disturbance rejection controller. Background technique [0002] The use of solar energy is one of the important aspects of human beings' utilization of renewable resources. How to make the photovoltaic panels rotate and align with the sun has become an important issue in the utilization of solar energy. The existing tracking methods mainly include differential pressure, control and release, photosensitive sensing, and solar trajectory tracking, etc., but no matter what tracking method is used, the design of the photovoltaic panel rotation positioning controller is one of the core technologies. one. Since modern control strategies generally have a strong dependence on the system model, it is of great theoretical and practical significance to study a control theory algorithm t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
Inventor 李大虎孙建波王林青陈宝塔黄柳柳
Owner STATE GRID HUBEI ELECTRIC POWER COMPANY
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