Quick Answer
To ensure stability of a tracker solar array in storms, secure the foundation with deep footings, reinforce the mount with sturdy poles, and use a robust tracking system that can withstand wind and weight loads.
Securing the Foundation
The foundation of a tracker solar array is critical in withstanding storm forces. To ensure stability, use deep footings that extend at least 10 feet below grade, with a minimum of 12 inches of concrete. This will provide a stable base for the mount and prevent uplift from high winds. Additionally, consider using a reinforced concrete slab or a steel plate anchoring system for added stability.
Reinforcing the Mount
The solar array mount should be designed to withstand wind loads of at least 120 mph (193 kph) and be able to resist uplift forces. Use sturdy steel poles with a minimum diameter of 4 inches (10 cm) and a thickness of 1/4 inch (6 mm). The poles should be anchored to the foundation with galvanized steel anchor rods and washers to prevent corrosion. Consider using a reinforced steel or aluminum frame for added strength and durability.
Tracking System Design
The tracking system should be designed to withstand the weight and wind loads of the solar array. Use a robust tracker system with a high-torque motor and a gear ratio of at least 10:1 to ensure smooth and accurate tracking. The tracking system should also be designed to maintain its position during high winds, with a maximum deflection of 5 degrees or less. Consider using a tracking system with a built-in wind-sensing algorithm to adjust the tracking speed and direction in response to changing wind conditions.
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