Method and system for predictive control of a wind turbine

A method of controlling a wind turbine having a plurality of wind turbine actuators, the method comprising the following steps:

• receiving operational data of the wind turbine;
• based on the received operational data, estimating an operational state of the wind turbine;
• using a control model to predict potential operational states of the wind turbine depending on operation of the wind turbine actuators over a finite period of time,
• wherein the control model comprises a predictive aeroelastic control model to determine primary loads based on the received operational data,
• the control model further comprising a strength calculation module to calculate one or more secondary load parameters based on one or more of the primary loads, constraints being defined for the secondary load parameters;
• optimizing a cost function over a finite optimization period of time, subject to the constraints, to determine an optimum trajectory comprising commands for the wind turbine actuators;
• and
• using the first commands of the determined optimum trajectory to control the wind turbine actuators.

A method of controlling a wind turbine having a plurality of wind turbine actuators, the method comprising repeating the following steps at consecutive control steps:

• receiving operational data of the wind turbine;
• based on the received operational data, estimating an operational state of the wind turbine, the operational state being defined at least partially by a plurality of variables;
• using a control model to predict potential operational states of the wind turbine depending on operation of the wind turbine actuators over a finite period of time, the control model further comprising a strength calculation module to derive one or more predetermined load parameters based on the received operational data, and wherein constraints are defined for the load parameters;
• optimizing a cost function over the finite period of time, subject to the constraints, to determine an optimum trajectory comprising commands for the wind turbine actuators;
• and
• using the first commands of the determined optimum trajectory to control the wind turbine actuators.