Motion responsive wind turbine tower damping

Details Motion responsive wind turbine tower damping Motion responsive wind turbine tower damping

1982-04-02

1983-12-13

Truhe, J. V.

Prime-mover dynamo plants

Electric control

Fluid-current motors

290 55, 416 41, 416 43, 416 30, 416 35, F03D 900, F03D 704

Patent

active

044206925

ABSTRACT:
An accelerometer (1) disposed on the support tower (12) of a wind turbine electric generating system in the vicinity of the rotor (10, 16) thereof provides a signal (1) indicative of acceleration of the tower in the direction of the rotor rotational axis. The signal (2) is passed through a band-pass filter (4) for summation (9) with a torque/power controlled (100) blade pitch angle reference rate signal (98), the integral (104) of which provides a blade pitch angle reference signal (40) to control the pitch angle of the rotor blades (10) through a pitch change mechanism (38), thereby to provide additional, positive aerodynamic damping to the tower while modulating blade angle for constant torque/power in response to wind turbulence.

REFERENCES:
patent: 4160170 (1979-07-01), Harner et al.
patent: 4161658 (1979-07-01), Patrick
patent: 4189648 (1980-02-01), Harner
patent: 4193005 (1980-03-01), Kostiali

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