PV Module Truss and Cradle Layout for Stable Sun Tracking
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Solution Overview
Problem
Existing photovoltaic module mounting systems have a high center of gravity, are costly due to independent motors, and inefficiently use real estate due to space requirements for gearboxes and linkages, impeding construction and maintenance access.
Innovation Solution
A truss and cradle assembly system that allows PV modules to be placed adjacent to each other, with a lower rotation point and underground linkage for unobstructed passage, enabling efficient real estate use and improved stability by reducing the center of gravity and eliminating the need for gaps between modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rotation point is positioned at the top of the mounting system to enable PV module rotation, then the PV modules can track the sun's diurnal motion, but the center of gravity becomes high which reduces stability under wind conditions
Solution Approach 1:
The patent inverts the conventional mounting approach by positioning the rotation point at the bottom of the mounting system rather than at the top. The PV modules are suspended from the rotation point, which is anchored to the ground through support posts. This inversion lowers the center of gravity and improves stability while maintaining the sun tracking capability through the same rotational mechanism.
2Adaptability or versatility
If independent motors are installed at each support post to rotate PV modules, then each module can be individually adjusted, but the system becomes costly and inefficient
Solution Approach 1:
The patent merges the rotation control of multiple PV modules into a single rotation point that controls all modules simultaneously. Instead of installing independent motors at each support post, one rotation mechanism at the bottom of the mounting system rotates the entire assembly of PV modules together, significantly reducing the number of motors and control systems needed while maintaining tracking functionality.
3Ease of operation
If gearboxes and linkages are positioned above ground to rotate PV modules, then the rotation mechanism is accessible, but space between PV modules is required which reduces effective array surface area
Solution Approach 1:
The patent moves the rotation mechanism from the horizontal plane (above ground between modules) to the vertical dimension (at the bottom of the mounting system, anchored to ground). By positioning the rotation point at the base of the support posts and suspending the PV modules from it, the system eliminates the need for horizontal clearance between modules, maximizing the effective array surface area while keeping the rotation mechanism accessible for maintenance.
4Adaptability or versatility
If linkages are positioned 2-3 feet above ground to connect rotation points, then the PV modules can be rotated, but construction and maintenance traffic flow through the PV array rows is impeded
Solution Approach 1:
The patent extracts the rotation mechanism from the space above ground and relocates it to the ground level. By anchoring the rotation point to the ground through support posts and positioning all rotational components at or below ground level, the system eliminates overhead linkages that would obstruct construction and maintenance traffic flow through the PV array rows, while still enabling full PV module rotation capability.
Data Source
AI summary
A support system for a solar panel includes a triangular truss with connection points for mounting a photovoltaic module, and a cradle structure that supports the triangular truss and is connected to at least two side supports of the triangular truss. The cradle structure may be driven for rotation about an axis for tracking the sun and several cradle structures can be linked together for tracking movement using a buried linkage system. The truss may also be foldable for ease of transportation and storage.