+6.5% AEP gain after rotor imbalance correction

Turbine Model
Gamesa G87 2MW
Windfit Feature
Rotor Balance
Rotor Balance
1
Windfit detects an aerodynamic rotor imbalance
1: Windfit detects an aerodynamic rotor imbalance
3 months later
2
Gamesa confirms the diagnosis and corrects a 4° blade pitch offset
2: Gamesa confirms the diagnosis and corrects a 4° blade pitch offset
3 weeks later
3
Windfit measures a gain of +6.5% AEP
3: Windfit measures a gain of +6.5% AEP

Yaw misconfiguration detected on a brand new wind farm

Turbine Model
Vestas V90 2MW
Windfit Feature
Yaw Dynamics
Yaw Dynamics
1
Windfit is installed on all 6 turbines of a wind farm
1: Windfit is installed on all 6 turbines of a wind farm
2
Windfit detects larger and rarer yaw movements on 3 of the wind turbines
2: Windfit detects larger and rarer yaw movements on 3 of the wind turbines
3
The turbines gain +1% AEP once all turbines are correctly configured

1.5% AEP loss detected and corrected in two days

Turbine Model
Enercon E70 2.3MW
Windfit Feature
Rotor Balance
Rotor Balance
1
Windfit detects a rotor imbalance and alerts the operator
February 4th
2
The asset manager calls Enercon
February 5th
3
The O&M team goes on site and confirms a pitch offset between the three blades
3: The O&M team goes on site and confirms a pitch offset between the three blades
4
The O&M team immediately corrects the issue
4: The O&M team immediately corrects the issue