Fresnel Lens Solar Tracking for Precise CPV Panel Alignment
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Solution Overview
Problem
Conventional solar power generation systems have low production efficiency and significant deviations in electric power output due to variations in solar irradiance, necessitating a method to maximize concentration efficiency by tracking the sun's movement.
Innovation Solution
A concentration photovoltaic solar tracking device using a Fresnel lens and a 4-division photodiode to detect solar light focus and control the solar panel's orbit and altitude, ensuring optimal alignment and minimizing solar light loss through a solar light loss prevention mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional immobile solar cell system is used, then the device complexity is low, but the productivity and energy conversion efficiency are low due to inability to track solar movement
Solution Approach 1:
The solar panel system transitions from a static immobile configuration to a dynamic tracking system that continuously adjusts its orientation. The control unit receives signals from photodiodes detecting solar position and automatically adjusts panel angles, enabling the system to dynamically follow the sun's movement across the sky, thereby maximizing energy capture throughout the day
Solution Approach 2:
The system incorporates a feedback mechanism where photodiodes continuously detect the solar position and light intensity, send signals to the control unit, which then adjusts the solar panel orientation accordingly. This closed-loop feedback system ensures the panels maintain optimal alignment with the sun, automatically compensating for changes in solar position and improving overall energy conversion efficiency
2Loss of energy
If solar panel orientation is not adjusted according to solar orbit variation, then the device complexity is low, but the concentration efficiency and energy capture are suboptimal
Solution Approach 1:
The system performs preliminary positioning adjustments by predicting solar movement patterns and proactively adjusting panel orientation before significant misalignment occurs. The control system uses pre-programmed solar trajectory data to anticipate position changes, reducing reactive adjustments and minimizing energy loss during transitions
Solution Approach 2:
The patent replaces complex mechanical tracking mechanisms with an optoelectronic control system. Instead of using heavy mechanical drives and complex gear systems, the invention uses photodiodes to detect solar position and electronic control signals to actuate simpler mechanical adjustment mechanisms, reducing overall system complexity while maintaining effective tracking capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves high-efficiency solar power generation by precisely tracking the sun's movement, reducing solar light loss and stabilizing electric power output, thereby enhancing overall energy production efficiency.
Implementation Method 1
A concentration photovoltaic solar tracking device using a Fresnel lens and a 4-division photodiode to detect solar light focus
Implementation Method 2
The technology adopts a generation method using a solar cell for photovoltaic generation by photoelectric effect when light is irradiated
Data Source
AI summary
Provided is a high-effective concentration photovoltaic solar tracking device and method; and, more particularly, to a concentration photovoltaic solar tracking device and method, which maximize concentration efficiency by concentrating solar light using a Fresnel lens and moving a solar panel based on focus information formed when the concentrated solar light is irradiated on a photodiode.