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← TechnologyWhich consequence results when an encoder on a wind turbine's yaw motor experiences vibrational loosening?
A)Rotor over-speed induced transformer saturation
B)Blade pitch angle calibration drifts
C)Nacelle misalignment relative to wind✓
D)Gearbox oil overheating increases rapidly
💡 Explanation
Nacelle misalignment relative to the wind happens because vibration interferes with the quadrature encoder signal, therefore the PLC loses precise yaw position rather than rotor over-speed; wind direction cannot be optimized or tracked. Gearbox and blade-pitch are secondary effects.
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