Wind turbine spoiler

Details Wind turbine spoiler Wind turbine spoiler

1983-02-24

1985-02-19

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Control of drive brake or clutch

416 87, 416 23, 416 51, 416132B, 416169R, 416227A, F03D 706

Patent

active

045002576

ABSTRACT:
An aerodynamic spoiler system for a vertical axis wind turbine includes spoilers on the blades initially stored near the rotor axis to minimize drag. A solenoid latch adjacent the central support tower releases the spoilers and centrifugal force causes the spoilers to move up the turbine blades away from the rotor axis, thereby producing a braking effect and actual slowing of the associated wind turbine, if desired. The spoiler system can also be used as an infinitely variable power control by regulated movement of the spoilers on the blades over the range between the undeployed and fully deployed positions. This is done by the use of a suitable powered reel and cable located at the rotor tower to move the spoilers.

REFERENCES:
patent: 2074149 (1937-03-01), Jacobs
patent: 2076520 (1937-04-01), Swanson
patent: 2126202 (1938-08-01), McColly
patent: 3038543 (1962-06-01), Davidson
patent: 3918839 (1975-11-01), Blackwell et al.
patent: 4082479 (1978-04-01), Rangi et al.
patent: 4180372 (1979-12-01), Lippert
patent: 4236504 (1980-12-01), Cornelison
patent: 4247252 (1981-01-01), Seki et al.
patent: 4247253 (1981-01-01), Seki et al.
patent: 4281965 (1981-08-01), Stjernholm
patent: 4335996 (1982-06-01), Ross

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