Fluid reaction surfaces (i.e. – impellers) – With means positioning fluid current driven impeller... – Offset relative to flow direction
Patent
1990-05-14
1993-01-12
Kwon, John T.
Fluid reaction surfaces (i.e., impellers)
With means positioning fluid current driven impeller...
Offset relative to flow direction
416132B, 416140, F03B 700
Patent
active
051785188
ABSTRACT:
Wind-driven electric generator apparatus has a generator head supported on a tower for free-yaw movement and for free-pitch movement within predetermined limits. The generator head has a downwind rotor with a pair of elongated blades mounted on a hub that is rigidly attached to a rotor shaft driving an electric generator. The blades are flexible and have a coning angle therebetween that varies with wind velocity. The generator head is capable of aligning itself with the wind direction azimuthally and elevationally. A yaw brake prevents an excessive yaw rate. In most preferred embodiment, pitch movement and yaw movement beyond small angular ranges are regulated, and an electrohydraulic yaw drive system corrects gross azimuthal misalignment with respect to the wind direction.
In a most preferred embodiment, pitch movement and yaw movement beyond small angular ranges are regulated, and an electrohydraulic yaw drive system corrects gross azimuthal misalignment with respect to the wind direction.
REFERENCES:
patent: 756616 (1904-04-01), Fornander
patent: 774168 (1904-11-01), Fornander
patent: 1397713 (1921-11-01), Anderson
patent: 1726599 (1929-09-01), Wasson
patent: 2360791 (1944-10-01), Putnam
patent: 2360792 (1944-10-01), Putnam
patent: 2363827 (1944-11-01), Albers
patent: 2484291 (1949-10-01), Hays
patent: 2784556 (1957-03-01), Perdue
patent: 4281965 (1981-08-01), Stjemholm
patent: 4297075 (1981-10-01), Jacobs et al.
patent: 4335996 (1982-06-01), Ross
patent: 4366387 (1982-12-01), Carter, Jr. et al.
patent: 4378198 (1983-03-01), Pettersson
patent: 4406094 (1983-09-01), Hempel et al.
patent: 4431375 (1984-02-01), Carter, Jr. et al.
patent: 4435646 (1984-03-01), Coleman et al.
patent: 4469956 (1984-09-01), D'Amato
patent: 4515525 (1985-05-01), Doman
patent: 4545728 (1985-10-01), Cheney, Jr.
patent: 4547124 (1985-10-01), Kliatzkin et al.
patent: 4557666 (1985-12-01), Baskin et al.
patent: 4571155 (1986-02-01), Angeloff
patent: 4664596 (1987-05-01), Wood
patent: 4692094 (1987-09-01), Kulinyak
patent: 4815936 (1989-03-01), Stoltze et al.
patent: 4909703 (1990-03-01), Jacobs
patent: 4966525 (1990-10-01), Nielsen
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