Off-Set Slew Drive Assembly for Precise Solar Tracker Torque Tubes
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Solution Overview
Problem
Conventional solar tracking systems are inadequate in optimizing energy conversion from solar panels due to inefficiencies in tracking the sun's angle, leading to suboptimal energy production.
Innovation Solution
A solar tracker apparatus with an off-set drive assembly, featuring a cylindrical torque tube and clam shell clamp assembly, allows for adjustable and efficient tracking of solar panels by pivoting and rotating to align with the sun's position, reducing the load on the drive motor and enabling independent movement of each tracker in an array.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional solar tracking mechanisms are used, then solar panels can track the sun, but energy conversion efficiency is not optimized due to inadequate tracking precision
Solution Approach 1:
The solar tracker employs dynamic adjustment mechanisms that allow real-time modification of tracking parameters based on sun position and panel orientation requirements. The system can dynamically change tilt angles and azimuth positions to optimize energy capture throughout the day, resolving the contradiction between tracking capability and energy conversion efficiency.
Solution Approach 2:
The invention utilizes parameter changes in the tracking mechanism, including variable speed motors and adjustable gear ratios, to precisely control panel movement. By changing operational parameters such as rotation speed and positioning accuracy, the system achieves both adequate tracking and optimized energy conversion.
2Reliability
If conventional solar tracking mechanisms are used, then basic tracking function is provided, but mechanical stress and load on drive components are excessive
Solution Approach 1:
The solar tracker incorporates counterweight mechanisms that balance the weight of solar panels during movement. By positioning counterweights to offset panel mass, the drive motor experiences reduced mechanical stress and load, improving reliability while managing complexity through mechanical balance rather than more complex drive systems.
Solution Approach 2:
The system employs equipotential design principles where the center of gravity of the panel assembly is aligned with the rotation axis during tracking movement. This minimizes torque variations and mechanical stress on drive components, enhancing reliability without requiring overly complex control systems.
3Ease of manufacture
If conventional solar tracking mechanisms are used, then tracking function is achieved, but installation time and cost are high due to complex assembly
Solution Approach 1:
The solar tracker is divided into modular segments including separate mount structures, panel arrays, and drive units. Each module can be manufactured and tested independently, then quickly assembled on-site using standardized connection interfaces, significantly reducing installation time and complexity.
Solution Approach 2:
The invention employs universal mounting structures and standardized components that can be used across different installation configurations. The same basic assembly can accommodate various panel types and sizes, simplifying manufacturing and installation processes while reducing the need for custom-made parts.
Data Source
AI summary
A slew gear drive including a housing having a tubular portion having a longitudinal axis, a shaft formed with a worm gear configured for rotational movement about the longitudinal axis within the tubular portion of the housing, and a torque tube having an outer surface, the torque tube carried by the housing for rotational movement about a rotational axis perpendicular to the worm gear, wherein an inner race coupled to the torque tube including a gear having teeth configured to engage the worm gear, the teeth extending less than a 360 degrees around the inner race. Rotation of the worm gear about the longitudinal axis engaging the teeth of the inner race, thereby rotating the inner race the torque tube about the rotational axis relative to the housing.