Foldable Solar PV Array Deployment Using Carriage-Based Unfolding
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Solution Overview
Problem
Existing portable solar photovoltaic (PV) arrays are costly due to complex sub-structures and labor-intensive installation processes, limiting their adoption for low-cost energy generation, especially in applications where temporary or flexible deployment is required.
Innovation Solution
A method for installing a PV array comprising foldable planar modules that unfold from a carriage without dragging, using a leading module secured on the surface and a carriage that supports the weight of remaining modules, allowing for efficient and damage-reduced deployment in various orientations, including East-West configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If PV modules are dragged along the support surface during deployment, then the modules can be unfolded from closed to open condition, but the modules are susceptible to damage and installation time increases
Solution Approach 1:
A carriage is introduced as an intermediary device between the PV modules and the ground surface. The carriage supports the weight of the PV modules during deployment and can be moved relative to the modules without causing them to drag along the ground, thereby preventing damage while enabling successful deployment.
Solution Approach 2:
The PV modules are pre-positioned on the carriage in a closed condition before deployment. The carriage is brought to the installation site and positioned relative to the support surface, allowing the modules to be deployed in their supported position without subsequent dragging movements that would cause damage.
2Adaptability or versatility
If a complex sub-structure is used to support PV modules, then the PV array can be made portable and redeployable, but the capital cost increases
Solution Approach 1:
The PV array system is segmented into modular components: PV modules, a carriage for support and transport, and a method for deployment. This segmentation allows each component to be optimized independently and facilitates portability without requiring an overly complex integrated sub-structure.
Solution Approach 2:
The system transitions from a static supported structure to a dynamic deployable system. The carriage can be moved to different positions and the PV modules can be transitioned between closed (transport) and open (operational) conditions, providing adaptability without permanent complex infrastructure.
3Device complexity
If PV modules are manually handled and dragged during installation, then no additional equipment is needed, but installation time and labor cost increase
Solution Approach 1:
The carriage serves multiple functions: it supports the weight of PV modules during transport, facilitates controlled deployment to the support surface, and enables movement without manual dragging. This multi-functionality improves installation productivity without requiring multiple separate pieces of equipment.
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
This method reduces installation time and cost, minimizes module damage, and enables flexible deployment of PV arrays, making them more viable for cost-effective energy generation across different applications.
Implementation Method 1
Solar PV modules are well known as devices that convert light energy (electromagnetic radiation) directly into usable electric energy via a photoelectric effect
Data Source
AI summary
Method of installation of a PV array with planar PV modules of square/rectangular configuration, each module defining square/rectangular edge and comprising a pair of parallel end and side edges, the modules being connected along adjacent end edges and foldable relative to each other about the connected end edges between a closed condition and an open condition, whereby in the closed condition, the modules are stacked together on a movable carriage on which the modules can be transported, the modules comprising a leading module, a trailing module and two or more intermediate modules, and in the open condition, the modules are laterally displaced from the closed condition about the end edge connections to collect electromagnetic radiation, the method including securing the leading module and moving the carriage relative to the leading module so that the carriage moves away from the leading module, allowing the PV array to unfold from the carriage.