Yaw gear issues
Yaw gear breakdown
Yaw gears play a key role in keeping the nacelle aligned with the wind. When a yaw gear breaks down, alignment becomes unreliable or unavailable. This can quickly affect energy capture and place additional load on surrounding components.
Understanding the Problem
Why is yaw gear breakdown a high‑impact issue?
Yaw gear breakdown often develops from wear patterns or load conditions reaching a critical point. Once the gear can no longer transmit load as intended, the yaw system loses its ability to react consistently. At that stage, restoring function becomes urgent to avoid prolonged misalignment and secondary effects.
Typical symptoms
Loss of yaw movement
The nacelle no longer turns as commanded.
Irregular or blocked yaw behaviour
Movement becomes inconsistent or stops entirely.
Yaw misalignment over time
The turbine remains offset from wind direction.
Increased load on remaining yaw components
Other gears or motors are stressed unevenly.
Operational restrictions or stops
The turbine may be limited or shut down to prevent further damage.
Solution
New yaw gear
Replacing the yaw gear provides a direct path to restoring full yaw functionality. This option establishes a clean baseline when the existing gear is no longer suitable for continued operation. The focus is reliable load transfer and predictable yaw behaviour under normal operating conditions.
Solution
Yaw gear refurbishment (repair loop)
Yaw gear refurbishment follows a structured repair loop rather than full replacement. The existing yaw gears are removed, inspected and repaired, with worn components replaced as needed, before being returned to service. This approach can reduce lead time and resource use while restoring functional performance.
