Wind machine with electric generators and secondary rotors locat

Details Wind machine with electric generators and secondary rotors locat Wind machine with electric generators and secondary rotors locat

1990-11-29

1992-09-29

Pellinen, A. D.

Prime-mover dynamo plants

Fluid-current motors

Wind

F03D 900

Patent

active

051516101

ABSTRACT:
Each vertically rotating blade of a wind-driven main rotor carries a secondary rotor oriented to be driven by the wind during its circular motion about the main rotor axis. The secondary rotors are thus exposed to a much increased relative wind speed and transmit torque to a rotary energy-producing device, such as an electric generator directly coupled to the shaft of the secondary rotor without the necessity of a speed-up transmission. Each secondary rotor may be located, in line with the chords of the main rotor blade, anywhere along said blade but, preferably, in the vicinity of the blade tip.

REFERENCES:
patent: 4291235 (1981-09-01), Bergey et al.
patent: 4503673 (1985-03-01), Schachle et al.
patent: 4537542 (1982-11-01), Kirschbaum

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