Output device, condition monitoring device, wind turbine, output method, condition monitoring method and non-transitory computer-readable storage medium storing program

A wind turbine comprising:

• a drive device including a plurality of actuators configured to cooperate with each other;
• a wind turbine body including a moving part configured to be driven by the drive device;
• and
• a condition monitoring device for the drive device of the wind turbine, the condition monitoring device including:
• one or more sensors, the one or more sensors operatively connected to the drive device of the wind turbine and configured to sense information relating to a load applied to each of the plurality of actuators;
• a controller having a processor, the controller operatively connected to the drive device of the wind turbine and the one or more sensors, the controller being configured to:
• obtain the information relating to a load applied to each of the plurality of actuators;
• based on the obtained information, calculate a partial load ratio, the partial load ratio representing a ratio of a load on each of the plurality of actuators to a total load, the total load being a sum of the loads on the plurality of actuators;
• diagnose a condition of the drive device based on the partial load ratio;
• and
• control the drive device based on the diagnosed condition.

A condition monitoring method for a drive device of a wind turbine, the condition monitoring method comprising steps of:

• obtaining information relating to a load applied to each of a plurality of actuators, the plurality of actuators being included in the drive device of the wind turbine and configured to cooperate with each other;
• based on the information obtained in the obtaining step, calculating a partial load ratio, the partial load ratio representing a ratio of a load on each of the plurality of actuators to a total load, the total load being a sum of the loads on the plurality of actuators;
• and
• diagnosing a condition of each of the plurality of actuators based on the total load and the partial load ratio calculated in the calculating step;
• and
• based on a diagnosis made in the diagnosing step, controlling the drive device of the wind turbine.