Which consequence results when the encoder on a variable-pitch wind turbine generator malfunctions during a grid disturbance?

💡 Explanation

Uncontrolled blade pitch occurs because the malfunctioning encoder cannot provide accurate rotor position feedback; therefore the pitch control system using proportional integral derivative (PID) control will become unstable, rather than maintaining optimal aerodynamic loading during disturbances, potentially leading to mechanical stress and faults.

• Which outcome occurs when reclosing high voltage transmission line breakers?
• Which failure mode occurs immediately upon surpassing the reverse breakdown voltage via avalanche effect across a silicon PN junction?
• Which outcome occurs when an unprimed centrifugal pump attempts to move water?
• Which outcome occurs when rapid changes overload inverse kinematics in a SCARA robot?
• Which failure outcome in reinforced concrete elevated slabs results due to Alkali-Silica Reaction (ASR) combined with insufficient rebar cover?
• Which risk increases when a redundant 6-DOF robotic arm relies excessively on joint angle interpolation?