Yaw control fault detection system

A method for determining a fault condition associated with a wind turbine, the method comprising:

• receiving a current signal for each of a a plurality of yaw motors of a wind turbine;
• generating one or more comparison values by comparing a current amplitude of each of the yaw motors relative to each other;
• determining a fault condition associated with at least one yaw mechanical drive component of the wind turbine based on comparing the generated one or more comparison values to at least one threshold;
• and
• indicating the fault condition to a user via a user interface.

A yaw motor control system associated with a wind turbine, the yaw motor control system comprising:

• a plurality of yaw motors;
• a plurality of yaw mechanical drive components;
• a logic controller configured to control operation of the wind turbine;
• and
• a yaw control fault detection system, the yaw control fault detection system comprising:
• a plurality of current monitors that are each configured to monitor a current amplitude of a respective one of the yaw motors and to generate a current signal that is indicative of the respective current amplitude;
• and
• a processor configured to perform operations comprising:
• receiving the current signal from each of the current monitors;
• generating one or more comparison values by comparing the current amplitude of each of the yaw motors relative to each other;
• and
• determining a fault condition associated with at least one of the yaw mechanical drive components of the wind turbine based on comparing the generated one or more comparison values to at least one threshold.