Photovoltaic Tracking Bracket Control for Low-Energy Sun Alignment
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Solution Overview
Problem
Photovoltaic array tracking systems consume excessive energy, reducing energy efficiency, especially in cloudy or poor lighting conditions, and lack intelligent control for optimal illumination.
Innovation Solution
A control method for a photovoltaic array tracking bracket that determines solar illumination points, calculates tracking credible values based on power generation and illumination information, sets compensation coefficients, and controls the array using infrared devices for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tracking system operates continuously to maintain optimal illumination, then power generation efficiency is improved, but energy consumption increases excessively
Solution Approach 1:
The control system operates periodically rather than continuously. It collects illumination data at intervals, processes the data to determine tracking credibility, and adjusts the array position only when necessary. This periodic operation mode significantly reduces energy consumption while maintaining effective power generation efficiency.
Solution Approach 2:
The system implements feedback control by continuously monitoring illumination data, comparing it with historical information, calculating tracking credibility values, and adjusting the array position based on the feedback from this analysis. This closed-loop feedback mechanism ensures optimal power generation while avoiding unnecessary tracking operations that would waste energy.
2Productivity
If the tracking system uses complex control algorithms to improve illumination optimization, then power generation efficiency is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: data collection module, data processing module, tracking credibility calculation module, and control execution module. Each module performs a specific function, making the overall complex system manageable and maintainable while achieving effective illumination optimization.
Solution Approach 2:
The patent introduces an intermediary processing layer that collects raw illumination data from multiple sensors, processes this data through standardized algorithms, and generates control commands. This intermediary layer simplifies the interface between sensors and actuators, reducing overall system complexity while maintaining optimization effectiveness.
3Productivity
If the system tracks the sun's position precisely to maximize illumination, then power generation efficiency is improved, but control energy consumption increases
Solution Approach 1:
The system performs partial tracking action based on tracking credibility values. Instead of continuously adjusting to maintain perfect alignment, it makes adjustments only when the calculated tracking credibility indicates significant deviation from optimal position. This partial action approach reduces control energy consumption while maintaining sufficient power generation efficiency.
Solution Approach 2:
The system changes the control parameter from continuous position adjustment to discrete tracking credibility-based adjustment. By using tracking credibility values as the control parameter and setting threshold values for adjustment, the system reduces the frequency and intensity of control actions, thereby reducing control energy consumption while maintaining effective illumination.
Data Source
AI summary
A photovoltaic array tracking bracket and a control method thereof are provided. The solar illumination point on the photovoltaic array is determined based on the solar illumination area; the power generation influence information and solar illumination information of the solar illumination points are collected, and the tracking credible value of the solar illumination point is calculated based on the analysis results; the compensation coefficient of the solar illumination point is set based on historical power generation information, and the tracking credible value is compensated according to the compensation coefficient to obtain the target tracking credible value; all the target tracking credible values are sorted in numerical size, and the target solar illumination point corresponding to the maximum target tracking credible value is extracted; a comparison point is selected on the photovoltaic array, and the photovoltaic array is controlled based on the target solar illumination point and the comparison point.