研究目的
Developing an energy efficient photovoltaic solar tracking system considering the wind load to enhance the survivability and reliability of the system.
研究成果
The study concludes that the proposed energy efficient photovoltaic solar tracking system with stepper motors can operate smoothly under random impacts including wind load. The system's survivability and reliability are enhanced by the proposed algorithm and tracking model. The study also highlights the importance of controlling the current amplitude of the stepper motor in the function of the tracking difference and its derivative for efficient operation under wind load.
研究不足
The study is limited by the technical specifications of the stepper motors and the variable moment of inertia in the mechanical parts of the system. The system's performance under extreme wind conditions may require further optimization.
1：Experimental Design and Method Selection:
The study involves the development of a nonlinear solar tracking algorithm and the use of a specific solar tracking controller, a two-coordinate sensor of solar position, and an electro-mechanical two-coordinate actuator with the stepping motor.
2：Sample Selection and Data Sources:
The study uses solar panels and stepper motors under various wind load conditions.
3：List of Experimental Equipment and Materials:
Includes solar panels, stepper motors (SM-5D type), solar position sensors, stepping motor control drivers, and a battery charge controller.
4：Experimental Procedures and Operational Workflow:
The study involves measuring current in photocells, evaluating relative current differences, and rotating the solar panel based on predefined conditions.
5：Data Analysis Methods:
The study uses simulation in the MatLab Simulink environment to analyze the dynamic characteristics of the electro-mechanical tracking system.
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