公开(公告)号：US20210270235A1

公开(公告)日：2021-09-02

申请号：US17190293

申请日：2021-03-02

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Christian JEPPESEN ,  Silvia ESTELLES MARTINEZ

IPC: F03D7/02 ,  F03D17/00

Abstract: A method is provided for monitoring a pitch control system for a rotor blade of a wind turbine. The method comprises a step of receiving a blade pitch signal representative of a pitch position of the rotor blade, a step of determining a pitch deviation, based on the blade pitch signal and a blade pitch reference. If the determined pitch deviation exceeds a first pitch deviation threshold, a pitch deviation variable is increased by an amount that depends on the determined pitch deviation, the first pitch deviation threshold, and a duration of a time period during which the determined pitch deviation has been exceeding the first pitch deviation threshold. An error signal is provided when the increased pitch deviation variable exceeds a pitch deviation variable threshold.

公开(公告)号：US20240401564A1

公开(公告)日：2024-12-05

申请号：US18686349

申请日：2022-08-23

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Silvia ESTELLES MARTINEZ ,  Fabio CAPONETTI ,  Kasper ZINCK

IPC: F03D7/02

Abstract: The disclosure relates to controlling blade pitch in a wind turbine that has a plurality of rotor blades and a hydraulic pitch system for adjusting a pitch of each of the rotor blades. The disclosure describes a method comprising obtaining a measurement indicative of a current level of hydraulic pressure available in the hydraulic pitch system, and determining, based on the obtained measurement, an adaptive pitch reference rate indicative of a rate at which the pitch of the rotor blades is to be adjusted by the hydraulic system. The method includes controlling the hydraulic pitch system to adjust the pitch of the rotor blades in accordance with the determined adaptive pitch reference rate.