Blade pitch angle control for large wind turbines

Details Blade pitch angle control for large wind turbines Blade pitch angle control for large wind turbines

1985-04-16

1987-04-07

Shoop, Jr., William M.

Prime-mover dynamo plants

Electric control

Fluid-current motors

290 55, 416 43, F03D 704

Patent

active

046563628

ABSTRACT:
A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of generated (output) power or torque and the rotational frequency of the wind turbine rotor. The output and rotor speed signals are input to a function generator which, in response to such signals, provides a signal indicative of the minimum pitch angle.

REFERENCES:
patent: 2653250 (1953-09-01), Romani
patent: 2738183 (1956-03-01), Quinn et al.
patent: 2832895 (1958-04-01), Huller
patent: 3269121 (1966-08-01), Bening
patent: 3589830 (1971-06-01), Mogren et al.
patent: 4160170 (1979-07-01), Harner et al.

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