2016 | NORTH AMERICA | USA | 38 MW
SF Utility tracker equipment supply and installation for project developer Isolux Corsan.
bahia soltec solar pv panels tracking plant 158 MW - Soltec
SF Utility tracker equipment supply and installation.


Why a New Method?

Current design standards applied to solar trackers have been shown to be insufficient to prevent them from being affected by high wind loads.
Conventional wind tunnels use rigid models that do not consider fluid-structure interaction effects such as the aeroelastic response of the structure. These phenomena cause instabilities (torsional galloping/flutter) that can produce the collapse of the trackers. The structure and its components must be designed stiffer and more robust than only applying the unsafe and incomplete current wind regulations and standards.

Wind Tunnels

Two types of wind tunnel tests are carried out to obtain the necessary aerodynamic parameters of scale models and precious results for the implementation of calculation methods that provide a realistic response of the behavior of solar trackers under the action of the wind.
  • Wind tunnel pressure tests: Static Wind Loading Coefficients are combined with Dynamic Amplification Factors (DAF) to cover the design wind speed ranges, considering the airflow wake behind each row.
  • Wind tunnel dynamic tests: Aerodynamic derivatives obtained allow accurate knowledge of the tracker’s response to wind action. Such parameters are combined with numerical models to obtain Fluttering and Buffeting Analysis Methods.

Dy-WIND Design

Dy-WIND takes its place in the extensive list of Soltec historic innovations made standard features that have resulted in the next-generation-now SF7 solar PV tracker whose mission is to find lower cost electricity for customers within their challenging tracker projects.
To develop Dy-WIND, Soltec has teamed up with the renowned engineering consulting company Rowan Williams Davies & Irwin Inc (RWDI), specializing in engineering projects.
The joint work of both firms has resulted in this new methodology that most accurately estimates tracker behavior under the action of wind.


RWDI helps clients tackle complex challenges in the built environment by combining innovative thinking, collaborative problem solving and a passion for expanding the boundaries of the possible. The world leader in wind engineering for skyscrapers, RWDI has been the principal wind consultant on 7 of the world’s 10 tallest buildings (Jeddah Tower in Saudi Arabia and Burj Khalifa in Dubai, among others) and nearly half of the top 100.
“The hybrid experimental-numerical approach developed through working with Soltec accurately estimates tracker behavior under the action of wind in multi-row arrays and allows flexibility in the design process that is generally not practical through full aeroelastic model testing.”

Matthew T. L. Browne, M.Eng., P.Eng., M.ASCE

Project Manager / Technical Director / Associate at RWDI

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