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Method for controlling heliostats in tower type solar-powered heat collecting device

A technology of tower type solar energy and heat collecting device, which is applied in the direction of solar heat collector controller, solar heat device, solar heat collector, etc., can solve the problem of low start and stop frequency, frequent start and stop of transmission mechanism, and incomplete mechanical error calibration. And other issues

Active Publication Date: 2013-03-27
陕西西科博尔科技有限责任公司
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Problems solved by technology

[0004] 2) Mechanical error calibration is not complete
Since the existing technology is still unable to solve the optimal control method under the combination framework of the control theory value and the current transmission mechanism, either the frequent start and stop of the transmission mechanism will cause mechanical damage, or the frequency of start and stop is too low to achieve the expected control accuracy
That is to say, how to optimize the control method in this mode still has a lot of room for research.

Method used

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  • Method for controlling heliostats in tower type solar-powered heat collecting device
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  • Method for controlling heliostats in tower type solar-powered heat collecting device

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Embodiment

[0123] 1) Use a camera to shoot the position of the heat collector, and check whether the light spot reflected by the heliostat is on the designated position of the heat collector. If the light spot is at the position of the target point, it proves that there is no mechanical error; otherwise, shoot the light spot Image of the actual position on the collector, such as Figure 5 shown;

[0124] 2) Find the central position of the actual light spot taken by the method of image analysis as the known condition utilizing the above mathematical model;

[0125] Recorded data: including the altitude angle and azimuth angle of the heliostat, the altitude angle and azimuth angle of the sun, the position coordinates of the specified point and the position coordinates of the actual point; these data are also used as the known conditions of the mathematical model;

[0126] 4) Use the mathematical model to calculate the position of the new specified point:

[0127] Assuming that there is ...

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Abstract

The invention relates to a method for controlling heliostats in a tower type solar-powered heat collecting device. A list of the change data of the height angle and azimuth angle of each heliostat is established by using a relevant mathematical model, so that the heliostats can accurately track sunlight and project light spots onto specified positions in a heat collector at any moment; the face mass center positions of the heliostats with mechanical errors are founded, and a novel tracking model method is provided for the positions, so that mechanical errors of the heliostats are eliminated; and a heliostat control data optimizing method matched with mechanical transmission is given under the condition of meeting controllable accuracy for tolerating influences caused by mechanical errors of a control system, so that the system cost is lowered, and the system reliability is enhanced.

Description

technical field [0001] The invention relates to the technical field of tower-type solar heat collection systems, in particular to a method for controlling heliostats in a tower-type solar heat collection device. Background technique [0002] In the tower solar thermal collectors, the dual-axis driving heliostat control method is generally adopted. According to the data related to the sun's trajectory, the mathematical model of tracking and projection control of the mirror field and a single heliostat, the mathematical model of mechanical error calibration, and the engineering A system composed of control methods such as optimization mathematical models. The method, the function and quality of the system will directly affect the solar energy collection capacity and effect of the tower type solar heat collection system. However, the current control method and system for dual-axis driven heliostats have the following problems: [0003] 1) There is still much room for improvem...

Claims

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Application Information

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IPC IPC(8): F24J2/40F24J2/38F24S23/00F24S50/20
CPCY02E10/47Y02E10/44
Inventor 王涛明周永福马贵鹏姚成生牛震宇汪腾飞王泽华陆栋锁兴亚冷贯南刘晓光
Owner 陕西西科博尔科技有限责任公司
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