Jet spoiler arrangement for wind turbine

Details Jet spoiler arrangement for wind turbine Jet spoiler arrangement for wind turbine

1983-09-15

1985-03-12

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Responsive to relative working fluid velocity

416 91, 416227A, 415DIG1, F03D 706

Patent

active

045041920

ABSTRACT:
An air jet spoiler arrangement is provided for a Darrieus-type vertical axis wind-powered turbine. Air is drawn into hollow turbine blades through air inlets at the ends thereof and is ejected in the form of air jets through small holes or openings provided along the lengths of the blades. The air jets create flow separation at the surfaces of the turbine blades, thereby inducing stall conditions and reducing the output power. A feedback control unit senses the power output of the turbine and controls the amount of air drawn into the air inlets accordingly.

REFERENCES:
patent: 1501248 (1924-07-01), Strong
patent: 1786057 (1930-12-01), Fales
patent: 2156133 (1939-04-01), Troller
patent: 2516489 (1950-07-01), Stalker
patent: 2759548 (1956-08-01), Yuan et al.
patent: 3547377 (1970-12-01), Frey
patent: 4082479 (1978-04-01), Rangi et al.
patent: 4142822 (1979-03-01), Herbert et al.
patent: 4197053 (1980-04-01), Reinke
patent: 4303835 (1981-12-01), Bair
patent: 4355955 (1982-10-01), Kisovec

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