Epsiline WindEagle

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• TOUGH
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• COMPACT
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• PRECISE
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• RELIABLE

AN INDEPENDENT MONITORING AND OPTIMIZATION TOOL

The nacelle-mounted wind LiDAR WINDEAGLE provides valuable information that enables multiple types of analysis of wind turbine performance and optimization:

1. Static yaw misalignment detection :

60% of wind turbines are misaligned, some with a yaw up to 15°. This leads to a sharp drop in performance. EPSILINE WindEagle provides accurate and reliable measures of wind direction directly in front of the blades where it is relevant.

With EPSILINE WindEagle, wind farms operators can accurately correct the yaw and can lead to 10% gain in performance.

2. Turbulence Intensity in different wind sectors

Thanks to its short range measurement in front of the wind turbine blades, the EPSILINE WindEagle is the unique lidar which is able to measure precisely Turbulence Intensity for each wind turbine.

The wind farm operator can thus check and optimize its curtailment strategy.

Turbulence Intensity data are the most important data in Wind turbine life extension estimations by reducing uncertainty in these estimations.

3. Aerodynamic and mass imbalance

25% of wind turbines suffer from rotor imbalance, up to 2°. Rotor imbalance reduces the aerodynamic efficiency of the wind turbine and can lead to reduced asset life due to excessive loads. EPSILINE WindEagle detects aerodynamic and mass imbalance.

Correcting rotor imbalance improves the lifespan of major wind turbine components and can lead to 4% gain in performance.

4. Performance analysis using Relative Power Curves

• Power Curve analysis to compare performance before and after improvements on the wind turbine e.g. yaw or pitch modifications, blade extensions, upgrades, retrofitting, etc

• Power Curve for Long term monitoring of performance and evolution over time.

5. Free-stream equivalent Power Curve. Comparable with site assessment data or power curve verification.

6. Gust detection

Thanks to its 2s wind speed measurements, the lidar-based sensor suite is able to detect rapid changes in wind speed or gusts.