| Description |
1 online resource (27 pages) : color illustrations. |
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text txt rdacontent |
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computer c rdamedia |
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online resource cr rdacarrier |
| Series |
NREL/PR ; 5000-76169 |
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NREL/PR ; 5000-76169.
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| Note |
Presented at the 2020 Photovoltaic Reliability Workshop (PVRW), 25-27 February 2020, Golden, Colorado. |
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"February 27, 2020." |
| Funding |
Contract No. DE-AC36-08GO28308. |
| Note |
Description based on online resource; title from PDF title page (NREL, viewed on Sept. 18, 2020). |
| Summary |
While wind tunnel testing and proprietary industry modeling tools have been used for years to design and develop PV tracker systems, wind induced dynamic failures are becoming more prevalent and high visibility. Designers and manufactures have reacted by developing new systems or add-on products to improve system dynamics adding to overall system costs. To better understand the physics and aeroelastic behavior that leads to dynamic instabilities NREL researches have taken up a first of a kind study to both develop open source aeroelastic modeling tools and measure tracker loads on a single axis full-scale tracker system at a high wind site. These modeling tools can simulate the fluid-structure interaction driving torsional instabilities under a wide range of turbulent inflow conditions and stow angles. The results of these simulations reveal the flow features associated with panel rotation and the induced loads in the structure. The experimental load measurements can be used to validate models and provide a quantifiable understanding of tracker dynamics, critical loads paths, identify instability markers, inform resilient design, and suggest the most favorable stow approach. |
| Subject |
Solar panels -- Stability -- Research.
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Panneaux solaires -- Stabilité -- Recherche.
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| Indexed Term |
aeroelastic |
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high wind |
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instability |
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loads measurements |
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modeling |
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PV tracker |
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system dynamics |
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torsional divergence |
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torsional galloping |
| Added Author |
National Renewable Energy Laboratory (U.S.), issuing body.
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| Standard No. |
1603934 OSTI ID |
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0000-0002-8292-8675 |
| Gpo Item No. |
0430-P-09 (online) |
| Sudoc No. |
E 9.22:NREL/PR-5000-76169 |
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