公开(公告)号：US12241452B2

公开(公告)日：2025-03-04

申请号：US17783356

申请日：2019-12-17

Applicant: General Electric Company

Inventor： Lijun He ,  Mohammad Attia ,  Biao Fang ,  Liwei Hao ,  Karim Younsi ,  Honggang Wang

IPC: F03D17/00 ,  F03D80/50

Abstract: A method for monitoring at least one rotor blade of a wind turbine includes implementing, via a controller, a control scheme for monitoring blade damage of the at least one rotor blade. The control scheme includes monitoring at least one electrical condition of a pitch system of the wind turbine. The method also includes converting the electrical condition(s) of the pitch system into a frequency domain. Further, the method includes determining one or more peaks of the frequency domain around a frequency component related to a natural frequency of the rotor blade. Moreover, the method includes determining a frequency deviation between the one or more peaks of the frequency domain and the frequency component related to the natural frequency of the rotor blade. As such, a frequency deviation outside of a predetermined frequency range is indicative of a rotor blade anomaly. Thus, the method includes implementing a control action when the frequency deviation is outside of the predetermined frequency range.

公开(公告)号：US20230011028A1

公开(公告)日：2023-01-12

申请号：US17783356

申请日：2019-12-17

Applicant: General Electric Company

Inventor： Lijun He ,  Mohammad Attia ,  Biao Fang ,  Liwei Hao ,  Karim Younsi ,  Honggang Wang

IPC: F03D17/00 ,  F03D80/50

Abstract: A method for monitoring at least one rotor blade of a wind turbine includes implementing, via a controller, a control scheme for monitoring blade damage of the at least one rotor blade. The control scheme includes monitoring at least one electrical condition of a pitch system of the wind turbine. The method also includes converting the electrical condition(s) of the pitch system into a frequency domain. Further, the method includes determining one or more peaks of the frequency domain around a frequency component related to a natural frequency of the rotor blade. Moreover, the method includes determining a frequency deviation between the one or more peaks of the frequency domain and the frequency component related to the natural frequency of the rotor blade. As such, a frequency deviation outside of a predetermined frequency range is indicative of a rotor blade anomaly. Thus, the method includes implementing a control action when the frequency deviation is outside of the predetermined frequency range.