Motion responsive wind turbine tower damping
Patent
·
OSTI ID:6933697
An accelerometer disposed on the support tower of a wind turbine electric generating system in the vicinity of the rotor thereof provides a signal indicative of acceleration of the tower in the direction of the rotor rotational axis. The signal is passed through a band-pass filter for summation with a torque/power controlled blade pitch angle reference rate signal the integral of which provides a blade pitch angle reference signal to control the pitch angle of the rotor blades through a pitch change mechanism, thereby to provide additional, positive aerodynamic damping to the tower while modulating blade angle for constant torque/power in response to wind turbulence.
- Assignee:
- United Technologies Corp.
- Patent Number(s):
- US 4420692
- OSTI ID:
- 6933697
- Country of Publication:
- United States
- Language:
- English
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