Auxiliary controller for wind turbine control system

A wind turbine comprising:

• a rotor having one or more rotor blades;
• a generator coupled with the rotor;
• a control system configured to alter one or more operational parameters affecting power generation of the wind turbine;
• a wind turbine controller;
• and
• an auxiliary controller arranged between the wind turbine controller and the control system, the auxiliary controller configured to:
• receive, from the wind turbine controller, a first control signal for the control system;
• determine the wind turbine to be in a first operational state;
• during the first operational state of the wind turbine, output the first control signal to operate the control system;
• determining the wind turbine to be in a second operational state;
• and
• during the second operational state of the wind turbine:
• transmit a feedback signal to the wind turbine controller in accordance with the first control signal;
• and
• output a second control signal as a substitute for the first control signal to operate the control system;
• and
• pitch at least one of the one or more rotor blades in accordance with the second control signal.

A computer program product comprising a non-transitory computer-readable media storing computer-readable code, which when executed by one or more computer processors of an auxiliary controller of a wind turbine, performs an operation comprising:

• receiving, from a wind turbine controller, a first control signal for a control system of the wind turbine;
• determining the wind turbine to be in a first operational state;
• during the first operational state of the wind turbine, outputting the first control signal so that the wind turbine controller operates the control system;
• determining the wind turbine to be in a second operational state;
• and
• during the second operational state of the wind turbine:
• transmitting a feedback signal to the wind turbine controller in accordance with the first control signal;
• and
• outputting a second control signal as a substitute for the first control signal to operate the control system;
• and
• pitching at least one rotor blade of the wind turbine in accordance with the second control signal.