Ge Infrastructure Technology, LLC

General Electric Renovables Espana, S.l.

General Electric Company

Pranav Agarwal

Frederick Wilson Wheeler

Darren John Danielsen

Samuel Bryan Shartzer

Arne Koerber

Ameet Shridhar Deshpande

Manthram Sivasubramaniam

Collin McKee Sheppard

Prashanth Kumar Reddy Vaddi

Shuang Gu

Bernard P Landa

Justin Edwin Barton

Misha Gupta

Vidya Sagar Meesala

Bernard Landa

Nikolina Kristeva

A method for mitigating loads acting on a rotor blade of a wind turbine includes determining, via a state estimator of a controller, a blade state estimation of the rotor blade. The method also includes reconstructing, via the controller, one or more loading signals of the rotor blade from the blade state estimation using modal analysis such that the loading signal(s) include a lead time. Further, the method includes comparing the loading signal(s) of the rotor blade to a loading threshold. Moreover, the method includes implementing a control action based on the comparison such that the lead time provided by the loading signal(s) allows the control action to take effect before a damaging load occurs on the rotor blade.

System and method for mitigating loads acting on a rotor blade of a wind turbine

The present disclosure is directed to a method for responding to a friction coefficient signal of a pitch bearing of a pitch drive mechanism of a wind turbine and/or for controlling the pitch drive mechanism(s) and/or a bank of ultracapacitors. The method and system include: accessing high-frequency measurement data of the at least one pitch bearing; estimating, via a torque balance model implemented by a controller, a frictional torque of the at least one pitch bearing based, at least in part, on the high-frequency measurement data; estimating, via the controller, a friction coefficient signal of the at least one pitch bearing based, at least in part, on the frictional torque; comparing the friction coefficient signal with a friction threshold; determining whether the friction coefficient signal deviates from the friction threshold based, at least in part, on the comparison; and, if so, acting.

System and method for responding to a friction coefficient signal of a wind turbine

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Fremont, CA, United States of America

Pranav Agarwal