Patent ID: 11913429
Assignee: GENERAL ELECTRIC RENOVABLES ESPANA, S.L.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H  Y | IPC F  H

Claim 13:
14. A method for operating a generator of a wind turbine, the wind turbine having a hub rotatably coupled to the generator via a rotor shaft that rotatably drives a gearbox that subsequently drives a generator shaft having a slip coupling, the method comprising:
generating, via a controller, a time series of a plurality of operating signals of the generator;
applying at least one algorithm to the time series of the plurality of operating signals of the generator to generate a processed time series of the plurality of operating signals of the generator;
identifying, via the controller, patterns in the processed time series of the plurality of operating signals of the generator to estimate torque information relating to the generator shaft;
predicting a start of a slip event occurring in the slip coupling using the torque information relating to the generator shaft; and
controlling a power converter of the wind turbine to mitigate the slip event;
wherein the plurality of operating signals comprise at least one of a generator speed, a rotor speed, a generator current, or a generator voltage: estimating an electromagnetic torque of the generator as a function of the generator current and the generator voltage; estimating a shaft torque of the generator using the electromagnetic torque of the generator and the generator speed; and estimating a coupling torque of the generator using the shaft torque, and
wherein applying the at least one algorithm to the time series of the plurality of operating signals of the generator to generate the processed time series of the plurality of operating signals of the generator further comprises estimating a first derivative of a shaft torque of the generator.