Solar Cell Voltage Converter for Parallel Power Loss Reduction
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Solution Overview
Problem
Solar cell systems face challenges in maintaining stable electrical power output due to variations in output voltages from multiple solar cells connected in parallel, which leads to power loss and nonuniformity caused by differences in manufacturing conditions and material characteristics.
Innovation Solution
A solar cell system that includes a first solar cell, a second solar cell, and a voltage converter, where the voltage converter connects the solar cells in parallel and adjusts the output voltage of the second solar cell to match the first solar cell's output voltage, using a DC-DC converter to minimize the difference between the two, thereby reducing power loss and ensuring stable electrical power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple solar cells are connected in parallel to increase power output, then the total power generation capacity is improved, but the output voltage nonuniformity increases causing power loss
Solution Approach 1:
The patent changes the voltage parameter of individual solar cells by introducing a voltage converter that adjusts the output voltage of each solar cell. This allows the system to maintain parallel connection for high power output while compensating for voltage differences through active voltage regulation, thereby reducing power loss.
Solution Approach 2:
The voltage converter acts as an intermediary device between the solar cells and the parallel connection point. It mediates the voltage differences by converting and adjusting the voltage from each solar cell before combining them in parallel, thus eliminating the direct conflict between voltage nonuniformity and power output.
2Adaptability or versatility
If multiple solar cells with different manufacturing characteristics are connected in parallel, then the system adaptability is improved, but the output stability deteriorates
Solution Approach 1:
The voltage converter incorporates feedback control mechanisms that continuously monitor the output voltage of each solar cell and adjust the conversion ratio accordingly. This feedback system enables the converter to adapt to different solar cell characteristics while maintaining stable output voltage, thus resolving the contradiction between adaptability and stability.
Solution Approach 2:
The voltage converter provides dynamic voltage adjustment capabilities, allowing the system to adapt to changing conditions and different solar cell characteristics in real-time. This dynamic control ensures that despite variations in manufacturing characteristics, the overall system maintains stable output composition.
3Loss of energy
If a voltage converter is added to reduce voltage differences, then the power loss is reduced, but the device complexity increases
Solution Approach 1:
The voltage converter serves as a specialized intermediary device designed to handle the specific task of voltage matching. By concentrating the complexity into a single dedicated component rather than requiring complex coordination between multiple solar cells, the overall system complexity is managed more effectively while achieving the goal of reducing power loss.
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 system effectively reduces the difference in output voltages between solar cells, suppressing power loss and maintaining stable electrical power generation even when solar cells have different initial or changing output voltages, ensuring uniformity and efficiency.
Implementation Method 1
a voltage converter including a fifth terminal and a sixth terminal, the fifth terminal being electrically connected to the fourth terminal... converting a second solar cell voltage of the second solar cell to reduce a difference between a first output voltage of the first generator and a second output voltage of the second generator
Data Source
AI summary
According to one embodiment, a solar cell system includes a first solar cell including a first terminal and a second terminal, a second solar cell including a third terminal and a fourth terminal, and a voltage converter including a fifth terminal and a sixth terminal. The third terminal is electrically connected to the first terminal. The fifth terminal is electrically connected to the fourth terminal. The voltage converter causes a second absolute value to be smaller than a first absolute value. The first absolute value is of a difference between a first potential difference and a second potential difference. The first potential difference is between the first and second terminals. The second potential difference is between the first and fourth terminals. The second absolute value is of a difference between the first and third potential differences. The third potential difference is between the first and sixth terminals.