System and method to reduce blade vibrations when yawing a wind turbine that is in a shutdown state and configured with a turbine-mounted crane

WO2026043487A8 Publication Date: 2026-06-11GENERAL ELECTRIC RENOVABLES ESPANA SL +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
GENERAL ELECTRIC RENOVABLES ESPANA SL
Filing Date
2024-08-23
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

Wind turbines experience aero-elastic instabilities such as vortex-induced and stall-induced vibrations during stand-still conditions, particularly when a turbine-mounted crane is used, which are difficult to simulate accurately and can lead to blade and structural damage due to constrained rotor yawing.

⚗Method used

A method and system that determines a new yaw position for the rotor, coordinating cable payout with the turbine-mounted crane to wrap cables around the tower, reducing vibrations by yawing the rotor to a position that minimizes these instabilities, using a wind turbine controller to manage cable tension and position.

🎯Benefits of technology

Effectively reduces blade vibrations and structural loads, preventing potential damage by optimizing rotor yawing and cable management during maintenance or installation procedures.

✦ Generated by Eureka AI based on patent content.

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Abstract

A system and method reduce vibrations in a blade mounted on a hub of a wind turbine rotor mounted atop a tower when the rotor is in a stand-still and limited yaw capacity state due to one or more cables that extend between a turbine-mounted crane and ground-based equipment. The method determines a new yaw position for the rotor that will reduce actual or predicted vibrations in the blade; and with a wind turbine controller in communication with the yaw system and a crane controller, the rotor is yawed from an initial yaw position to the new yaw position while simultaneously controlling payout of the cables from the ground-based equipment so that the cables wrap at least partially around the tower as the rotor rotates relative to the tower to the new yaw position.
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