Measurement configuration with the ROMEG

The ROMEG system is composed of two high-frequency laser units positioned upwind of the rotor, at a distance approximately equal to the hub height.
These lasers scan each blade at two distinct positions, as well as the tower’s position between each blade passage. This configuration enables precise tracking of both blade geometry and tower motion.
The output includes:
– a graph displaying the averaged profile of each of the three blades, allowing for direct comparison of their pitch alignment,
– and a graph showing tower movement as a function of rotor rotational speed, providing insights into structural dynamics and potential oscillations.

Illustration of blade profiles measured by the ROMEG

Profiles with 0.2° deviation

Profiles with 0.6° deviation

Profiles with 1.2° deviation

Illustration of tower oscillations measured by the ROMEG

Oscillations with 0.2° deviation

Oscillations with 0.6° deviation

Oscillations with 1.2° deviation

Different ROMEG control points

Tolerances
Relative pitch angles +/- 0.15°
Radial splitting +/- 0.2°
Tower clearance +/- 50mm
Twist angle +/- 1°
Axial tower oscillation +/- 10mm

Discover the influence and consequences of a blade angle defect