Load control for wind-driven electric generators

Details Load control for wind-driven electric generators Load control for wind-driven electric generators

1978-03-02

1979-03-27

Schaefer, Robert K.

Prime-mover dynamo plants

Electric control

Fluid-current motors

322 35, 322 31, 290 55, F03D 900

Patent

active

041462645

ABSTRACT:
In a wind-driven generator system, the generator load curve is matched to the wind-driven rotor characteristic by an electronic field current control which is responsive to the rotor speed. A tachometer circuit produces pulses the repetition rate of which is proportional to rotor speed. The pulses are counted in a predetermined time interval, and a stepwise control of field current is effected in accordance with the count. Switching from the first step, in which field current is zero, to the second step, in which field current is relatively high, takes place at a count which is spaced by intermediate counts from the count at which switching takes place from the second step to the first step.

REFERENCES:
patent: 2118124 (1938-05-01), Weeks
patent: 2152576 (1939-03-01), Weeks
patent: 3974395 (1976-08-01), Bright

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