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An Adaptive Time-variable Solar Tracking Control Method

A solar tracking and control method technology, applied in the field of solar tracking control, can solve the problems of reducing power generation, failing to realize system self-sufficiency, increasing system loss, etc.

Active Publication Date: 2020-12-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this working method not only needs to add an additional power supply, but the self-sufficiency of the system itself cannot be realized, but also increases the loss of the system and reduces the power generation

Method used

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  • An Adaptive Time-variable Solar Tracking Control Method
  • An Adaptive Time-variable Solar Tracking Control Method
  • An Adaptive Time-variable Solar Tracking Control Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] The location of the solar panels is Urumqi, its latitude and longitude is (87.36E, 43.46N), and the date is September 22.

[0112] Step 1: Calculate the sunrise time T u = 8:13, sunset time T s =20:08, the sunshine duration is Hours and 55 minutes.

[0113] Step 2: Since the power of the motor is unknown, it is assumed that T b =9:00, the solar panel tracking time is adjusted from (8:13, 20:08) to (9:00, 19:21).

[0114] Step 3: The initial division interval of intervals (9:00, 10:13) and (18:09, 19:21) is 30 minutes, intervals (10:13, 12:11) and (16:10, 18:09) The initial division interval of is 20 minutes, and the initial division interval of the interval (12:11, 16:10) is 15 minutes.

[0115] Step 4: Adaptive adjustment of time division interval

[0116] Divide (9:00, 10:13) into 2 parts with a time interval of 36.5 minutes; divide (10:13, 12:11) into 6 parts with a time interval of 20 minutes; divide (12:11 , 16:10) is divided into 16 parts with a time interva...

Embodiment 2

[0126] The solar panel is located in Urumqi, its latitude and longitude is (87.36E, 43.46N), and the date is June 21.

[0127] Step 1: Calculate the sunrise time T u = 6:34, sunset time T s =21:47, the sunshine duration is Hours and 13 minutes.

[0128] Step 2: Since the power of the motor is unknown, it is assumed that T b =7:30, the solar panel tracking time is adjusted from (6:34, 21:47) to (7:30, 20:51).

[0129] Step 3: The initial division interval of intervals (7:30, 9:07) and (19:15, 20:51) is 30 minutes, intervals (9:07, 11:38) and (16:43, 19:15) The initial division interval of is 20 minutes, and the initial division interval of the interval (11:38, 16:43) is 15 minutes.

[0130] Step 4: Adaptive adjustment of time interval

[0131] Divide (7:30, 9:07) into 3 parts with a time interval of 32 minutes; divide (9:07, 11:38) into 8 parts with a time interval of 19 minutes; divide (11:38, 16:43) is divided into 20 parts with a time interval of 15 minutes; divide (...

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Abstract

The invention provides a self-adaptive time-variable solar tracking control method and relates to the field of solar photovoltaic power generation. The method comprises the steps that firstly, the local sunrise time and sunset time are calculated, the tracking starting time and ending time are adjusted according to a certain rule, and according to self-adaptive tracking internal division, rotationof a solar cell panel is adjusted. According to the method, firstly, the tracking starting time and ending time of the solar cell panel are adjusted, the energy required for the rotation of a solar cell panel tracking device at the starting moment is provided without an additional power supply, and self-sufficiency of the system is achieved; secondly, based on change characteristics of solar radiation intensity, a tracking mode of self-adaptive time-variable intervals is provided, the working mode of the solar cell panel is dynamically adjusted, and more solar energy is collected under the condition that the solar cell panel rotates as little as possible; finally, in order to solve the problem of hysteresis quality of the solar cell panel in the tracking process, the corresponding advanced quantity theta is introduced, and the efficiency of collecting the solar energy is improved.

Description

technical field [0001] The invention relates to the field of solar photovoltaic power generation, in particular to a solar tracking control method. Background technique [0002] As a clean and non-polluting energy source, solar energy has very broad prospects for development and has become a green energy source that countries are competing to develop. Among them, solar photovoltaic power generation has become the fastest and largest industry in the field of renewable energy power generation after wind power generation. [0003] With the development of the photovoltaic power generation industry and the advancement of science and technology, various automatic tracking control systems for photovoltaic power generation have emerged continuously. According to their working methods, they can be divided into two types of tracking control systems. The method realizes the real-time tracking of the sunlight, so that the sunlight is perpendicular to the solar panel. Although the absor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D3/10
CPCG05D3/105
Inventor 贺宏锟张迎天许炎李旭婷王晓飞雷阳
Owner NORTHWESTERN POLYTECHNICAL UNIV