Solar PV Array Wiring and Robotic Assembly for Shade Tolerance
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Solution Overview
Problem
Current solar photovoltaic (PV) systems face limitations in energy output due to panel angle, temperature, and shading issues, with existing mounting schemes being costly and labor-intensive, and inefficient wiring methods leading to power degradation from shading, while also requiring extensive on-site electrical work.
Innovation Solution
A fully integrated solar energy system featuring a new shade-common PV cell and panel wiring scheme, inter-panel connector system, and robotic assembly method that allows for parallel panel-to-panel shading, reducing power degradation and labor costs, and enabling faster, more cost-effective installation and higher energy output per unit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional series wiring is used for PV panels, then electrical connection is simple, but power output degrades significantly when shading occurs
Solution Approach 1:
The patent segments the PV panel wiring into multiple independent parallel strings rather than using a single series connection. Each string contains series-connected cells, and multiple strings are connected in parallel. This segmentation allows shaded panels in one string to not drag down the performance of other strings, as each string can independently optimize its current output based on its shading conditions.
Solution Approach 2:
The patent changes the electrical connection parameters from traditional series wiring to a hybrid parallel-series configuration. By adjusting the wiring topology and allowing different strings to operate at different current levels, the system adapts to varying shading conditions and maintains higher overall power output.
2Ease of manufacture
If fixed panel mounting is used, then installation is simple and cost-effective, but energy collection is reduced due to inability to track the sun
Solution Approach 1:
The patent introduces dynamic tracking capability to otherwise fixed panel mounting systems. The tracking mechanism allows panels to adjust their orientation dynamically throughout the day to follow the sun's movement, maximizing energy collection while maintaining the simplicity and cost-effectiveness of fixed mounting for the majority of the installation.
3Reliability
If inter-panel shading is avoided through increased spacing, then each panel receives full sunlight, but land use efficiency decreases and installation costs increase
Solution Approach 1:
The patent converts the previously harmful effect of inter-panel shading into a beneficial configuration. By deliberately designing parallel row arrangements where shading occurs and applying parallel wiring with string-level optimization, the system actually improves overall array performance by allowing shaded panels to contribute through alternative current paths while maintaining high land use efficiency.
4Ease of operation
If manual assembly methods are used, then installation flexibility is maintained, but labor costs and installation time increase significantly
Solution Approach 1:
The patent replaces manual mechanical assembly with automated robotic systems. Robots perform the repetitive tasks of panel placement, wiring connection, and securing mechanisms, dramatically increasing installation speed while maintaining flexibility through programmable control. The standardized connection mechanisms enable easy adaptation to different installation configurations.
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 significantly increases solar energy output and reduces installation costs by allowing maximum power capture from sunlight and full sky exposure, while accelerating deployment with robotic assembly and standardized components, lowering land costs and engineering expenses.
Implementation Method 1
PV panels which directly generate electricity from light
Data Source
AI summary
A cost-effective solar energy collection system, including: 1) new solar PV panel wiring and power conversion system designed to allow tracking panel-to-panel shading while maintaining maximized power output, 2) the companion new combined structural and electrical inter-panel connector system supporting the new wiring scheme, and 3) the new panel structural support for the new inter-panel connector system, 4) the robotic array assembly and installation system used to assemble the new inter-panel connector and new panel structural support system into solar array sections in the field with a robotic crawler to move the assembled solar array sections to their final positions, and 5) the post system and installer for supporting the solar array sections. It is a fully integrated solar energy system for rapid installation and higher energy output which together creates a transformative change for the solar energy field.